Government of Ethiopia Ministry of Water Resources v ir Mb MacDonald <& Partners Cambridge, England LimitedJ I J Jlist of contents 1. Introduction 2. Description Of The Drainage SysIra........................................................................................................ 3 2.1 Sub-Surfnee Drainage System 2.2 Surface Drainage System 3. Design Criteria 3.1 Calculation Of Drain Spacing 3.2 Drain Hydraulic Gradient 3.3 Drain Discharge 3.4 Drain Depth ............................................................................................................................................. b 3.5 Manholes? 3.6 Lateral And Collector Drain Design Procedure 8 4. Maintenance Inspections Of The Sub-Surface Drainage System ... q 5 11 4.1 Introduction............................................................................................................................................. 11 4.2 Inspections 4.3 Reporting Procedures 11 13 5. Maintenance Work For Sub-Surface Drainage 14 5.1 Introduction............................................................................................................................................. 14 5.2 Drain Cleaning 5.2.1 Sedimentation Of Drains 5.2.2 Drain Cleaning Equipment 5.2.3 Drain Cleaning 5.2.4 Frequency And Sequence Of Drain Cleaning 14 14 14 15 16 5.2.5 Maintenance And Repair Of Sub Surface Drains.............................................................................. 25 5.3 Maintenance Of Sub-Surface Drainage Structures 25 5.3.1 Manholes 26 5.3.2 Lateral Drain Jetting Eyes 26 5.3.3 End Pipes 27 5.4 Rush Clearance 27 5.5 Maintenance Equipment . e e 28 5.6 Maintenance By The Project Control Centre 29 6. Maintenance Work For Surface Drainage 6.1 Introduction 6.2 Scope Of The Work 6.2.1 Main Drain MD1 6.2.2 Siltation 6.2.3 Spoil Disposal Systea 30 *............................ .... ’ ’ ..............................30 ............................................................................ 3q ............................................................................. 32 ............................................................................. 32 6.2.4 Surface Drains................................................................................................................................ 3- 6.3 Maintenance Equipment Supplied 7. Drawings . . . . ’ . ’ . . . . * ’ * . * * 34 ^5 c-\uFfrdir\oMndi\nppraiio.iniTable 1 Table 2 LIST OF TABLES Aaibara Drainage Project Total Lengths Of Sub-Surface Drains A-ibara Drainage Project Total Lengths Of Deep Open Surface Drains Table 3 Nominal And Actual Internal Diameter For PVC Corrugated Drainage Pi pes Table 4 Design Criteria - Sub-Surface Drainage Table 5 Length Of 80 mm Diameter Pipes In Lateral Drains Cotton Growing Areas Table 6 Length Of 80 mm Diameter Pipes in Lateral Drains Banana Growing Areas Table 7 Maintenance Interval For Pipe Drainage (Years) Table 8 Quantities Of Pipes Laid In Metres Table 9 Block And Field Numbers Table 10 Total Numbers Of Sub-Surface Drainage Structures Table 11 Spoil Disposal Areas Melka Sadi Table 12 Spoil Disposal Area Amibara LIST OF FIGURES Figure 1 Sub Surface Drainage - Melka Sadi Figure 2 Sub Surface Drainage - Aaibara Figure 3 Typical Drain Sections Figure 1 Checking The Function Of Pipe Drains With Piezometers APPENDICES APPENDIX 1 Checking Pipe Systems APPENDIX 2 Drain Clogging By Iron Ochre APPENDIX 3 Sample Form Ml] APPENDIX 4 As Constructed Drawings APPENDIX 5 Operation And Mnint L 90 Super D "tenance Manuals And Spare Parts Lists For rain ^leaning Machine And WT 6000 Wnter Tank Trailer c. \UBerdir\oand«\operatio.ian iiABBREVIATIONS km Kilometre mm Millimetre m Metre mm/d Millimetres per clay ha Hectare kg/cn‘ Kilogram per square centimeter Min Minute I AR Institute of Agricultural Research ADP Amibara Settlement Project MW Melka Werer AL Algeta PTO Power take off c:\userdir\oandi\op eritio.mn iii1. Introduction A maintenance manual for the Civil Engineering Works of the Amibara Irrigation Project II was prepared by Sir William llalcrow and Partners in November 1984. That manual covers the institutional arrangements involved in the implementation of the operation and maintenance of the project works, a description of those works, details of the operation and maintenance processes and the personnel and plant involved. The Project Control Centre (PCC) is responsible for the operation and maintenance of the common works which include: a) Flood protection dykes b) The interceptor drain c) River diversion works and 102 km 26 km irrigation distribution system and associated structures down to but excluding the off takes to the tertiary canals and drains. These comprise: i) Melka Sadi weir, intake and structures; ii) Primary canal settling reach; iii) Primary canal and structures; iv) Main drains and structures; v) Secondary canals and structures; vi) Secondary drains and structures; Total for part c d) Road system and associated structures e) PCC buildings and associated services 2 km 24 km 30 km 30 km 35 km 135 Km 35 Km The Amibara Drainage Project Stage I increases the drainage works and buildings whose operation and maintenance will become the responsibility of PCC, on the completion of the construction contracts. These additional works comprise: A. Housing 2 Nr Type C Blocks 1 Nr Type C Service Quarter 3 Nr Type D Blocks 1.5 Nr Type D Service Quarter General site works and associated services. n. Deep Open Drains Including Associated Structures Drain New drains Remodelled drains Length Of Drain (Km) 11.90 38.34 c:\a6erdir\oaidi\operalio.ini 1c Buried Sub-Surface Drainage Length Of Drain (km) Collector Drains Lateral Drains 124 886 Total Length 1010 Kb The existing operation and maintenance manual deals with building and services and the seven additional buildings would be included in the operation and maintenance role that PCC already fulfills for existing buildings. The additional length of new open drains is some 12.9 km, 11.2 km of which i6 for drain SD7. This represents an additional 20% of drain to be maintained by PCC or some 10% of the total length of the existing canal and drain system. However, because of the increase in the depth of the deep open drainage system the maintenance work is more difficult and will require additional machinery to carry it out. The maintenance of the open drains and associated structures is covered in the existing operation and maintenance manual. It has been assumed that maintenance of the remodelled and new surface drains will remain the responsibility of the PCC. The addition of the sub-surface drainage system is a new category of works not covered by the existing operation and maintenance manual and its maintenance is the main subject of this manual. c:\u6erdir\oanrfi\ope rat i o.lan 22. DcBcription Of The Drainage System 2.1 Sub-Surface Drainage System a) Pipe Drains Lateral drains comprising 65 mm and 80 mm diameter slotted corrugated PVC pipes have been installed at an average depth of about 1.7m surrounded by an envelope of red ash material some 75mm thick. At the junction of the lateral and collector drain a jetting eye has been provided to allow the lateral drain to be cleaned. A protective concrete slab has been placed above the jetting eye. At the end of each drain line an end cap has been fixed. Where the length of the lateral drain exceeds 400 m, jetting will also be carried out from the end of the lateral at its end cap. Collector drains comprising 160 mm, 250 mm and 335 mm, corrugated PVC pipes have been installed at an average depth of some 2.5 m. Manholes have been installed on the collector drains at approximately 350 m centres. The manholes are constructed of circular concrete pipe sections with a concrete base and cover slab which incorporates an access opening some 600 X 500 mm. Manholes are all either buried below ground or covered with an earth mound of some 300 mm thickness. The total lengths of lateral and collector drain installed in the Melka Sadi and Amibara areas are shown in Table 1. Table 1 Amibara Drainage Project Total Lengths Of Sub-Surface Drains Drain Diameter Lengths Of Sub Surface Drains In Ki (■■) Melka Sadi Amibara Total 65 80 160 250 335 488 278 82 766 38 35 120 14 34 49 14 16 48 11 72 Total Lengths Of Pipe 655 355 1010 Area with sub-surface drainage (ha) 24 38 1382 3820 b) Outfall Structures Lateral drains Outfall into deep open drains. collector drains or in some cases directly into c:\nierdir\oandi\opentio.iaii 3The field lateral outfall structure comprises a 5 metre length of unslotted corrugated PVC pipe running into a 2 metre long by 100 mm diameter concrete pipe which protrudes into the open drain with a 1 metre wide section of 150 mm thick rip-rap extending Trom the outlet pipe down to, and including, the drain bed. The collector drain outfall comprises a 3 metre length of concrete pipe, the diameter of which varies with the collector drain pipe diameter. The outlet pipe protrudes into the open drain with 2 metre wide section of 300 mm thick rip-rap extending from the outlet pipe down to and including the drain bed. 2.2 Surface Drainage Systea The surface drainage system consists of 38.34 km of remodelled deep open drains of which 25.54 km are in the Melka Sadi area and 12.80 km are in Amibara. In addition there are two new major drains (SD7 and SD4/2) in the Amibara area which are 11.90 km long in total. Deep open drains are approximately 4 metres maximum depth and have 1:1.5 side slopes. Any drains over 3.5 metres in depth have a berm incorporated into the side slope, both for stability and for ease of maintenance. In addition to the deep open drains there are a number of new or remodelled tertiary and surface field drains which discharge into the deep open drainage system. There are also a number of additional major cross drainage structures as well as associated minor structures, which are situated in the deep open and surface drains. The deep open drainage system, maintenance of which is the responsibility of the PCC, has increased by some 10X of the total length of canals and drains a ready maintained by PCC. The total lengths of remodelled and new drains is shown in Table 2. Table 2 Amibara Drainage Project Total Lengths Of Deep Open Surface Drains MELKA SADI TYPE LENGTH KM MD1 SD2 R 7.13 SD3 R 5.21 SD8 R 3.20 SD9 R 5.50 R 4.50 AMIBARA Total 25.54 SD4 SD4/2 R 5.60 SD5 N 0.70 SD6 R 0.80 SD7 R N 6.40 11.20 R-remodelled Total 24.70 N-new InoXe.. °f in Melka Sadi and Amibara is 50 c:\uBcrdir\omdi\operilio.ian 43. Design Criteria Given below is a summary of drainage. 3.1 Calculation Of Drain Spacing the criteria used in the design of the sub surface The Amibara soils are very varied with numerous layers of contrasting textures and permeabilities in the top 5 metres of soil. Hence a weighted value of hydraulic conductivity was calculated using the formula. k weighted = kjtj ♦ kjt.j Where k| is the hydraulic conductivity of layer 1 tj is the thickness of layer 1 etcetera tj... tg is the total soil thickness under cons iderat ion. Barrier layers were identified using the Winger method which defines an impermeable layer as one having a hydraulic conductivity value of one fifth (or less)than the weighted values of the layers above it, as far as the maximum height for the groundwater to be permitted after drain installation. Drain spacings were calculated using the Hooghaudt Formula, with an average drain depth of 1.8m, drainage rates for cotton of 2.5mm/d and for bananas 3.4mm/d and 0.5m difference in hydraulic head between each drain and the point mid-way to the next drain. 3.2 Drain Hydraulic Gradient A minimum slope for lateral of 0.001 or generally in the project area except in slopes in the direction of flow in the lateral drains. 1 in 1000 has been adopted and used a few areas which have steep ground Generally the . co ec or rains run down the lines of gr-e-a--t-e- ——xz st slope*. so that lateral can feeoidupc av vimu xauci ai van ivvd ru -j rom o si es‘ f the collector ran parallel to the contour then the e seriously restrict their length. be running against the ground slope and this would A minimum collector slope of n nnn^ i u « oi U.U005 has been adopted for very flat areas 3.3 Drain Discharge As stated above, the design of 2.5mm/d for drains mShllscbarg^s for lateral drains are based on a rate ... An areal reduction factor of Rn» u area and 3 4mm/d for the banana - has been used for collector drain discharges. areas, c:\uBcrdir\oMdi\opcritio.iftnLateral discharge has been based on the equation n = 422 D3 “ i2/3 m3/s where D is the internal pipe diameter in meters i is the pipe slope. Discharge in the collector pipe is given by: The lateral discharge equation allows for both spatially varied flow into the pipe and the effect of siltation of the pipe. The collector drain formula makes no allowance for siltation or spatially varied flow. The nominal and actual pipe diameters are given in Table 3. the equivalent diameters for multiple collector pipes. Tab Ic 3 Nominal And Actual Internal Diameter For PVC Corrugated Drainage Pipes Also shown are Drain Type Nominal Diameter (■■) Internal Diameters (■■) Laterals 65 59 80 72 Coilectors 160 146 250 335 225 300 Equivalent Internal Diameters (■■) Double Collectors 2 x 160 184 160 ♦ 250 160 + 335 2 x 250 250 ♦ 335 2 x 335 244 311 283 337 378 3.4 Drain Depth maximum drain depth of 2 im r •• 1" the designs was 1.8. which resulted in a tn ? Dm Thi . x aullui urains generally nau uepvus ui £.uih Collector drains generally had depths of 2.5m ffpnornliv r>r ln ?rn ’ resu^teci in the depth of the disposal system being generally of the order of 3.0m to 3.5m. In some places, a minimum drain appropriate depth of collector, low point in the ground profile the centre line of the lateral lateral/collector junctions. c:\userdir\oandi\operatio.ian depth of 1.6m was used, to allow a more It also occurred where the drain crossed a A minimum drop of 300 mm was allowed from to the centre line of the collector atA minimum drop of 0.20m was allowed from the collector dram pipe invert to the open drain design water level. In a few cases it was necessary to reduce this value for an individual collector outlet to avoid deepening the open drain. A surcharge of up to 150 mm has been allowed when designing the collector drains. 3.5 Manholes Manholes have been installed on collector drains at an average spacing of 350m and a maximum spacing of 450m. Locations have been chosen at pipe bends and changes in pipe slope as these are places where siltation is more likely to occur. In addition manhole locations were chosen to coincide with a lateral drain junction where this was possible. A manhole was also provided at the upstream end of each collector where it could be positioned at a field edge. It. was originally intended that manholes located in fields would be buried but those at field edges or outside cropped areas would be exposed to allow easy access. Unfortunately these exposed manholes were subjected to damage from vandals and subsequent blockage. The exposed manholes were then buried by an earth mound to prevent further vandalism. A summary of the design criteria for sub-surface drainage is shown in Table 4. Table 4 Design Criteria - Sub-surface Drainage Lateral Drains Drainage rate Minimum pipe gradient. Minimum depth of drain at head of lateral, or low point along lateral Pipe filter surround, minimum thickness Difference in level, centre line of lateral and collector Banana 3.4mm/d Cotton 2.5mm/d 0.1X 1.6m 75mm 300nm Collector Drains Drainage rate Areal reduction factor Minimum pipe gradient Maximum length oT pipe run between inspection chambers Difference in invert level and design water level in °f collector drain Banana 3.4mm/d Cotton 2.5mm/d 0.8 0.05X 350m 200mm c;\uerdir \oudi\operitio.m 73.6 Lateral And Collector Drain Design Procedure A simplified step by step procedures used in the design of sub-surface drains is given below. 1. On a 1:5000 scale plan, the critical lowest ground level (G.L) along the line of the lateral was marked. At this point (say 150m from the collector), the lateral drain level was G.L. - 1.8m (drain depth). At the lateral drain/collector junction the lateral drain level was G.L. -1.8 - (150 X 0.001) where 0.001 is the lateral drain slope. 2. The lateral levels at the collector were plotted against distances along the collector. A depth of 0.3m was subtracted from the lateral levels to give the corresponding maximum collector levels at each lateral junction. 3. Collector levels were chosen to be at or below the maximum collector drain levels allowing for a minimum collector drain slope of 0.0005. A single lateral which had a level lower than the general level could be raised by up to 0.2m. The area drained (A) at each level point (i.e at each field boundary) was calculated, and the corresponding discharge obtained using the formula: Q= H“ where q is discharge in 1/s and A 25 X 0.8 X A - Cotton area 86.4 34 X 0.8 X A - Banana area 86.4 is the area in hectares. The collector pipe sizes were chosen based on the slope at t e the formula upstream end of each pipe run (i.e at each field and discharge boundary) using q = 150 D1 iI/3 where D is the internal pipe diameter 6. Manholes were placed at changes pipe diameters. 7. in metres and i is the pipe slope, in collector slopes and/or changes in using^he*f\ the lengths of 65mm and 80 mm pipe were calculated XS f.° t "r oo q= r 8iVr ?" 0*8, together with the discharge formula. 422 D3,25 1 but th ' —1 For a standard latemi • 65mm and 80mm pine wer 6 slope °f °-00l> t,‘bles of the lengths of for both the cotton j PreP«red for various drain lengths and spacings 6. an<* banana areas. These are shown in Tables 5 and c:\iiserdir\oaiidi\operitio.un 8Table 5 Length Of 80bb Diameter Pipes In Lateral Drains - Cotton Growing Areas COTTON GROWING AREAS TOTAL LENGTH OF LATERAL, METRES (65MM + 80MM DI A. L, IN PIPE) LENGTH OF FOR DRAIN 80MM DIA. SPACING:- PIPE IN A LATERAL 30M 45M 60M 75M L < 100 100 < L < 150 150 < L < 200 200 < L < 250 250 < L < 300 300 < L < 350 350 < L < 400 400 < L < 450 0 0 0 0 0 un 0 50 0 0 0 0 30 80 130 180 0 0 0 45 95 145 195 245 0 0 40 90 140 190 Max. allowable Length of Lateral (65 and 80 dia. Combined) Pipe 900 600 450 360 c:\uierdir\oaRdi\operaljo.ian 9Table 6 Length Of 80m Diaaeter Pipes In Lateral Drains - Banana Growing Areas 1—'— MELKA SADI BANANA UNIT AREA TOTAL LENGTH OF LATERAL, L, IN METRES (65MM + 80MM DI A. PIPE) LENGTH OF 80MM DIA. PIPE IN A LATERAL FOR DRAIN SPACING:- 30M 45M 60M 75M L < 100 100 < L < 150 150 < L < 200 200 < L < 250 250 < L < 300 300 < L < 350 350 < L < 400 400 < L < 450 0 0 0 0 0 45 95 145 0 0 0 50 100 150 200 250 0 0 50 100 150 - - 0 30 90 130 - - - Max. allowable Length of Lateral (65 and 80 di a. || Combined) Pipe 675 450 335 270 c:\uierdir\oi80i\operalionn 104. Maintenance Inspections Of The Sub-Surface Drainage Syste. 4.1 Introduction Buried pipe drainage systems, properly installed, generally need very little care to keep them operating satisfactorily. However, newly constructed systems require close vigilance during the early years or operation. Proper care of the system during this early period will increase the effectiveness of the drains and will often eliminate the need Tor future coBtly maintenance. Drainage system failures or partial failures are usually associated with unstable soil conditions which cause: shifts in pipe alignment and slope; collapsed pipe; pulled joints and; clogged outlets, pipes and manholes. The overall functioning of a pipe drainnge system may be checked by water table observations and individual malfunctioning drains may be identified by observing discharges. The cause of malfunctioning may be diagnosed by measuring flow resistance by means of piezometers. This is discussed in Appendix 1 of the manual. 4.2 Inspections An inspection of the efficiency of the drainage system would normally be carried out by an inspection of the pipe outlets after irrigation of the fields through which the drains run. However, this is not possible in the whole project area, as the abandonment of some fields over a number of years has caused the watertable in these fields to drop below the level of the field drains. It is recommended that a programme of drain inspection and cleaning starts in the irrigation season of 1996. Recommendations on the sequence of drain flushing for 1996 and subsequent years are given in part 5.2.4 of the manual. All drain outlets should be inspected for flow, after irrigation. If no flow is observed, the drains should be cleaned using the drain flushing machine and any blockages, pulled joints etc. will become obvious by the flushing head being unable to proceed up the full length of the drain. For those drains which do not flow because of the low watertable level due to the ack o irrigation, some sample drains should be flushed to identify any sys ema ic pro lems. The results of these sample tests should be used to tec ice l it would be worthwhile to continue to flush every drain, or to halt the sample testing as so few faults have been identified. Following the preliminary recommended that a complete of drain cleaning be carried programme of drain flushing in 1996, it is visual inspection of the system and a programme out each year in the irrigation season. The visual inspection would comprise the following a) An to i) identify problem°fs tsheucout h fall of the buried drain into the open drain, as: follow°W f.rom the drains where it would be expected; e.g. *ng irrigation of the area through which the drains run, or Dow m the adjacent drain8. c: 'Uerdir\oandi\operiho.un 11ii) the presence of rodent nests in the pipe outlets. The construction contract included the fixing of rodent screens to the pipe outlets. However the continual theft of these screens made their installation useless and this provision was discontinued; iii) breakage or removal of the outlet pipes. These are often broken by careless cleaning of the open drains. These breakages may become particularly common in drains which are heavily weeded, so obscuring the outlet structures. Significant areas of pitching have been provided around and below the outlet pipe down to drain bed level. It is expected that, when the open drains are being cleaned the impact of the excavator bucket on this pitching will give the operator some warning of the presence oT an outlet. If the operators still continue to damage outlets, the installation of a large boulder or some other substantial marker at the top of the drain slope directly above the drain outlet should be considered, to give the excavator operator additional warning of the presence of a drain outlet structure; iv) displacement of pitching around the outlet; v) erosion of the drain embankments, around the outlet; vi) drowning of outlets by high water levels in the open drains caused by si 1 tat ion and/or weed growth. b) An inspection of sample manholes On drains which do not appear to be working well, the earth cover to a sample manhole should be removed, the manhole cover itself removed and the condition inside the manhole inspected. This will provided useful information on the condition of the manhole and the inlet and outlet pipes themselves and the rate of siltation that, is occurring in the system. Signs of erosion or settlement around the outside of the manholes should also be investigated. The presence of high water levels in the manholes would be evidence of blockage within the system. c) Sample drain lines (particularly those which are suspected problems) should be walked along to look for; i) ii) iii) small or large sinkholes. These are often signs of a brok P*P or faulty pipe joints; wet spots over a drain are good indicators that the drain become completely or partially blocked; the growth of trees or large shrubs over the drains. species have roots which can spread out from e distance equal to the height of the tree itsel . Blockage of roots is the most common cause of blockage d) older drams by tree of these drains. The presence of iron ochre. A problem of high entry resistance with drain D21 on the pilot drainage scheme c:\uierdir\oandi\operatio.ian 12uns found to be caused by the presence of black slime in some of the pipe slots. This is believed to be a form of iron ochre. Fortunately in this case the material could easily be removed by hand. More detail or iron ochre problems and their solution are given in Appendix 2. In addition to this annual inspection, PCC and State Farm Btaff should be vigilant and report possible faults in the drainage system to PCC so that they can be dealt with promptly. 4.3 Reporting Procedures The existing Maintenance Manual set up a system of Standard Forms for Inspection, Survey and Maintenance of the Project Works. The set of forms Ml to M9 are inspection and maintenance work forms for the various components of the project, including the weir and headworks, the river and flood protection works, canal and drain system, and roads and buildings. The reports are completed by the person carryingout the inspection and detail the maintenance work required. Form MIO is used to estimate the labour plant and materials, together with their estimated cost needed to complete a particular piece of work. These forms cover the full range of components included in the Amibara Drainage Works Contract with the exception of the sub-surface drainage works. Hence a new form has been prepared, Form Mil, which covers the inspection and notification of the sub-surface drainage repair works required. A pro-forma of Form Mil is shown in Appendix 3. In addition to completing the forms following routine inspection, they should also be completed for incidental reports of problems, which would instigate an assessment of the necessary repair work. c:\iwrdir\onfli\opentio.iafi 135. Maintenance Work For Sub-Surface Drainage 5.1 Introduction Most maintenance of sub-surface drainage is reactive, i.e a response to observed problems. If problems can be reported and solved soon after they occur, they may be easily solved, but delay in the repair to the system often makes it progressively more difficult and expensive to reinstate the drains. Drains may relatively quickly reach the point where their complete reinstatement is required unless quite simple repairs are carried out when the problems are discovered. In addition to this reactive approach, two forms of maintenance should also be carried out an a regular basis. These are:- 1) drain cleaning 2) clearing of bush and trees along drain lines in areas which are not currently cultivated 5.2 Drain Cleaning 5.2.1 Sedimentation Of Drains Sedimentation of drains is mainly caused by silt or sand in the soil. Siltation caused by silt material is usually small and of minor influence. However sometimes undesirable siltation may occur due to: a) high groundwater levels during construction. Siltation is sometimes caused by the high velocity of groundwater in the unstabilised trench carrying silt into the pipe. Hence trenches should not be left open for long periods, particularly during periods of high rainfall. Generally during construction, this situation did not occur; b) a leaching process sometimes makes the soil unstable, which causes silt particles to enter the drain. Generally, sedimentation by sand occurs more frequently than sedimentation by silt. It is mainly caused by: a) the filter envelope around the drains being too thin in some locations; b) the gradation of the envelope material being variable with an excess of coarse material in some locations; c) damage to pipe or pipe joints allowing inflow of soil material. 5.2.2 Drain Cleaning Equipment The drain cleaning equipment usually has three components: 1) 2) 3) to pressurise the hose n„d .7 c:\a6erdir\oandi\operatio.iao se and flushing head. 1 14The flushing head Ims a s of jets (normally 4 or 6) hose up the drain. ingle nozzle on the front of the head and a number directed backwards to propel the flushing head and The pressure at the pump.of the cleaning machine is normally operated at between 45 and 65 kg/cm2, although the machine supplied is capable of operating up to 80kg/cm2. At the normal operations range, the water quantities required are of the order of 100 lit.res/min. Hence a 6000 litre tanker can --------------------------------- is 400m and the reel can be power. .driven . to only provide sufficient water for about an hour. The hose length . ---- .-I-- u------------- The rewind the hose. The pum p is driven from a P.T.O. of the tractor. 5.2.3 Drain Cleaning Drain cleaning should preferably be carried out when water is flowing through the pipes, when deposits in the pipes are wet and can more easily be removed than in dry and "hard” conditions. Furthermore, the resistance of the flushing head in wet pipes is less than in dry pipes. Of course, if the pipes are blocked, there will be no flow in the drains, and cleaning will be slower than if the drain is flowing. In addition, access to some drains in the irrigation season would not be possible due to wet ground conditions or standing crops. In this case, the drain cleaning programme would be extended into the non-irrigation season. Drain manholes have been provided along collector drains at approximately 350m intervals, although in a few places this has been extended to 450m. The length of hose on the drain cleaning machine* is 400 m* On the lateral drains, jetting eyes have been provided at the junction of the lateral and collector drains. At the end of the lateral drains, the end caps have a magnet attached to them, and the use of magnetic locators should help to locate the position of the end caps, from above ground. Four magnetic locators have been provided to PCC for this purpose. In addition, magnets, or in some cases metal components, have been attached to the concrete slabs above the jetting ryes. Generally drain cleaning is carried out in an upstream direction i.e from the open rain en 0 the drain pipes. However for drains with access points grea er an m apart, it may be necessary to clean drains in a downstream direction for short distances. d^ainVr^VLn^leV.0^ eJer^tthe'L\Vr7Mcol?eXr°Uld made frOIB th<? collector outfall into the open B ’anh°leS °" the end can. It should =1 5tOr Junctl°ns and at the end of the lateral at the collector’ jetting 5 t0 magnetic locators sensing the^ ^^ buHed “anh°leS Using the g the reinforcement in the top slabs of the manholes. c:\i8erdir\oudi\openlio.m 15The entry velocity of the flushing head and hose depends very much on the degree of siltation in the pipe but would generally between 10m and 40m per minute, allowing the hose to proceed up the full length of a 400m lateral in about 15 minutes. IT obstructions are encountered and the hose will not continue further, the obstruction should be located and removed and the pipe repaired. The hose should not be retracted from the pipe too fast. In principle it should be done at the same speed that it entered the pipe. This allows the loose material in the pipe to flow back through the pipe in front of the rear jets of the flushing head as it is retracted. The obstruction in the pipe can be located by reading the meter counter on the machine. It will not be possible to locate the flushing head using the magnetic locator. There is an attachment that can be purchased for locating the flushing head. This uses a tiny transmitter attached to the flushing head which is detected by a portable receiver above ground. The accuracy of location is about 0.5m and the maximum depth of drain for which it is effective is some 2.5m. However, its immediate purchase is not recommended unless many obstructions in pipes are found. The drain cleaning method is capable of removing relatively recent deposits of sediment, small dead roots of shrubs or trees, chemical sediments that are not encrusted, and limited amounts of sand. If will not deal with badly clogged pipes, particularly those clogged by sand, live plant roots and old crusted sediments. Generally the inside of the pipe and most of the perforations will be cleaned by the drain cleaner, but contamination of the filter envelope will not be removed, or if it is removed it will be to a very limited extent only. It is therefore very important that clogged or blocked pipes are cleaned as soon as possible after the clogging occurs. This is particularly important in the first one or two years after the installation of the pipes. 5.2.4 Frequency And Sequence Of Drain Cleaning Drain cleaning cleaning of the is most likely to be required in the lateral drains, with co ector pipes and manholes needing to be done less often. rond^ conditions encountered. m - Hnn?pnrnf drain cleaning as a project-wide process depends on the soil based on topsoil and sub-soil t. a number of countries. Table 7 shows typical intervals for drain cleaning --- -ypes. This is based on general experience from c:\useroi r\o»udi\opertlio .iu 16Maintenance Interval For Pipe Drainage (Years) Texture Of Topsoil Sub-Soil Texture Light Med i iib Light 2 Medium 3 Heavy 4 5 Heavy 4 5 6 It would be expected that drain cleaning would be required about every five years for this project. However, more frequent cleaning in the first and second years may be required as the soils settle and conditions become stable. For areas where leaching is practical, an early drain cleaning operation following the leaching process is recommended. Appendix 4 contains the ’as constructed’ drawings for the subsurface drainage system. Drawings 6A and 7 A of Appendix 4 show the areas in Melka Sadi and Amibara respectively where subsurface drainage pipes have been installed, and also indicates the block numbers for each area. The block numbers were given during construction for ease of reference. Table 8 gives the lengths of lateral and collector pipe installed in each block so that this can serve as a gauge for PCC when deciding how much drain can be flushed during any one year and in which areas this should be carried out. It is estimated that approximately 32 kilometres per month (or 210 km per year over a 7 month period) of drain could be flushed. During the first two years (1996, 1997) priority areas should be flushed and thereafter drains could be flushed on a rotation at basis so that the whole scheme is covered over about a five year period. Figures 1 and 2 show the boundaries of the drainage installation in Melka Sadi an Ami ara respectively and the field numbers corresponding to the drained area. The block numbers and their respective field numbers are as shown in Table 9. c:\userdir\oindi\operalio.ian 17Table 8 Qualities Of Pipet Laid la Metres Size m m Mclka Sadi Block Nr 335 250 160 80 65 Collector L Lateral 1 753 1002 2048 0 35881 1A 1466 3081 1642 5650 31142 2 737 1505 918 0 28871 3 1085 500 2533 0 34126 3A 459 865 2435 0 17935 4 813 1814 1268 1225 18031 5 0 1356 326 5900 10990 6 775 1515 421 7400 14259 7 0 1468 315 7804 10242 8 1285 1139 0 1750 7131 9 0 681 945 4670 3287 10 257 2123 620 0 33492 11 3580 0 0 0 32967 12 922 957 741 0 22530 13 529 987 698 4250 7300 14 1138 2415 964 12650 14334 15 0 216 886 1790 4716 Bl 0 0 0 4500 7077 B2 675 1942 2394 1550 33211 B3 0 706 2248 3400 11204 B4 0 1223 918 2900 12535 B5 1758 1707 2257 3900 32604 B6 0 3229 2362 3050 36765 B7 0 428 794 0 11330 B8 0 1568 4609 B9 8120 16421 29 1268 2406 1551 0 Total MS 16261 33695 34748 82060 488381 Atnibara Block Nr 1AR 2127 MW1 1247 1952 69(0 25547 769 M WZ 755 971 5250 7538 1443 Adi’ 4062 3676 6450 68072 Af AL 3090 2502 1313 13350 50134 3441 5119 5585 6150 126438 Total AM 10870 13685 13497 38100 277729 :\uscrdir\rcpon.(iE\jsdtotai.wK3Boundary of drained areaFigure 2Block Number Melkn Sadi 1A 2 3 3A 4 5 6 7 8 9 10 11 12 13 14 15 Tabic 9 Block And Field Numbers Field Nuaber F3/1/13 to F3/1/16 F4/1/1A, IB, 2A, 2B F4/3/15A, 15B, 16A, 16B F4/2/11A, 11B, 12 F3/1/9 to F3/1/12 F3/1/5 to F3/1/8 F3/2/19 to F3/2/21 F3/1/1 to F3/1/4 F3/2/27 to F3/2/32 F3/2/22 to F3/2/26 F3/3/33 to F3/3/38 F3/3/39 to F3/3/43 F3/4/46 to F3/4/49 F3/3/44, 45, 54, 55 F1/2D/61 to F1/2D/67 F1/2B/55 to F1/2B/60 F1/2A/16 to F1/2A/21 FA/1/11 to Fl/1/15 Fl/1/5 to Fl/1/10 Fl/1/3 to Fl/1/4 :\oserdir\oandi\operiuio.ian 21Table 9 continued: Melka Sadi Banana Unit Bl 82 B3 B4 B5 B6 B7 B8 B9 Aaibara I AR ASPI ASP2 ASP3 MW1 MW2 AL1 AL2 AL3 AL4 AL5 3B1 to 3B7 2C13 to 2C17, 2D18 to 2D22 2A1 to 2A6 2B1 to 2B4 1A1 to 1A4, 1B1 to 1B7 3B8 to 3B10, 3B13 to 3B19, 4A8, 4B9, 4B10, 4C8, 4C12, 4C13 3A2, 3A3, 3A5 2B5 to 2B12, 2D23 to 2D30 1A9 part, 1A10 4A9, 108 to 130, 208 to 230 ASP 1- A, ASP 1-B ASP 2 ASP 3 F61A, FG1B, F62A, FG2D, F63A, F638, F6/4 D2/2 to D2/10, 01/11 to DI/17, D3/1, B3-2, B3-3, B2-1 to B2-4 AL1 A1.2 AL3 AL4 AL 5 c:\o5erdir\oandi\op?rilio.iAn GGThe areas to be maintained (with reference to the block and field numbers given in Table 9 and shown on Figures 1 and 2) and their priority order would be as follows. Priority 1 Land where leaching has been carried out already and which can be handed back to State Farms. Block Fields Approximate Length Of Lateral (km) Approximate Flushing Time (Months) 1 F3/1/13 to 15 18 0.6 2 F3/1/10 to 12 22 0.7 5 F3/2/25, 26 8 0.3 6 F3/3/33 to 36 15 0.5 Total 63 2.1 Because of the short time involved in priority 1, it is probably more beneficial that priority 2 becomes land which is already in production, rather than land which is in the process of being leached and which will not be completed for some time. Priority 2 Land which has been previously abandoned but which in the cotton area, in addition to some areas which cultivation and irrigation. is now back in production, have been constantly under Block Fields 1 F3/1/16 to F3/3/1/18 1A All fields 4 All fields 6 F3/3/37, 38 Approximate Length Of Lateral (km) Approximate Flushing Time (Months) 7 All fields 8 All fields 9 All fields Total 116 0.6 1.2 0.6 0.2 0.6 0.3 0.3 3.8 :\userdir\oiid«\operatio un 2 3Priority 3 Priority 3 should be to finish leached and are either back in Block 3A should be completed at flushing operations in a fairly the flushing of all fields which have been production on shortly will be. In addition, this time to so that a reasonable sequence of compart area is maintained. Block Fields Approximate Length Of Lateral (km) 3 All fields 34 3A 5 All fields 18 F3/2/22 to F3/2/24 10 Tot a 1 62 Approximate Flushing Time (Months) 1.1 0.6 0. 3 2.0 Priority 4 There are only a few fields in the Melka Sadi Banana Unit in production at present. However, it is considered prudent to flush the drains in these fields at a reasonably early stage in their life because of the history of high water tables and abandonment of land in the banana area. This should be followed by the remaining cotton fields in production in the Melka Sadi area and those fields in the Institute of Agricultural Research in Amibara. Block Fields B5 1A to 1A4, 1B1 to 1B4 B4 2B1, 2B2, 2B3 B7 3A2, 3A3, 3A5 B2 2D18, 2D19, 2C14 to 2/16 B6 4A8, 4A9, 4B9, 4B10, 3B18 3B19 10 All fields 11 All fields 12 All fields I AR All fields Priority 5 Approximate Length Of Lateral (km) 29 12 9 17 16 34 33 23 32 Total 205 Approximate Flushing Time (Months) 0.9 0.4 0.3 0.5 0.5 1.1 1 0 0.7 1.0 6.4 The last remaining priority for flushing under cultivation and those areas in both bush but which might be cleared in the cultivation. In Amibara, water years might worsen and ASP 3. is those fields in Amibara currently Melka Sadi which are currently under near future and might be put under tables are currently low but irrigation over the next two e situation. The only areas affected in Amibara are MW1 c.\oB**rdi r\omdi\operRt io. urn 21Block Fields Approximate Length Of Lateral (km) 13 20 Approximate Flushing Time (Months) MW1 ASP3 All All fields fields Total 33 0.4 0.6 1.0 Future Priorities The recommendations made are not definitive and to a certain extent depend on how the situation develops in the future, particularly with leaching, the handing over of leached land to the State Farms, and bush clearing and reclamation of abandoned land. The recommendations should be viewed as guidelines, but the PCC should be prepared to be flexible in their approach and should review the recommendations while taking into account the future developments on project. In addition to the recommendations made, it is imperative that PCC should be prepared to accommodate any flushing or remedial work which might become necessary following the regular visual site inspections carried out by them and which are aimed at identifying faults in the system which might become apparent through those inspections. 5.5.5 Maintenance And Repair Of Sub Surface Drains The drain flushing recommended previously is designed to keep drains in working condition. The regular drain inspections also recommended are to identify problem areas which need rectification or repair. If a drain becomes irreparably clogged with material which cannot be removed by flushing there is little alternative but to excavate and remove the offending section of drain and replace it. A comprehensive quantity of drain parts - pipe, junctions, tees, glue etcetera are retained in the pipe making factory at Melka Werer. In the events of any failure of the system, these items can be used to effect repairs. 5.3 Maintenance Of Sub-Surface Drainage Structures The sub-surface drainage structures are: 1) Collector drain outfalls into open drains 2) 3) 4) Lateral drain outfalls into open drains; Manholes; Jetting eyes. The total numbers of each of these structures are given in Table 10. c:\userdir\oMdi\operatio.ian 25Table 10 Total Numbers Of Sub-Surface Drainage Structures Melka Sadi Amibara Total Collector Drain Outfalls Lateral Drain Outfalls Manholes Lateral Drain Jetting Eyes The maintenance currently under maintenance are 5.3.1 Manholes 44 17 61 68 14 82 347 134 481 1790 964 2754 of the drain outfalls are similar toother drainage structures the responsibility of PCC and the procedures for their similar to those described in the existing maintenance manual. Manholes are now buried, which makes the inspection of the inside of them not so immediate as for exposed manholes. Their burial became essential due to repeated tampering and vandalism of them. However once it is decided to inspect the inside of a manhole, the opportunity should be used to carry out any necessary maintenance of it at the same time. Once the earth cover to the manhole a removed, it should not be left open and unattended. Maintenance work is likely to be minor and might include: 1) Backfilling and compaction of earth around the manholes; 2) Removal of deposited material from inside the manhole; 3) Plastering or sealing the manhole where major leakage or inflow of soil from outside the manhole occurs; 4) Differential settlement of the manhole, which should be corrected by underpinn ing. Four ladders each five metres in length have been supplied under Contract ADP/T/03/90 to facilitate access into the manholes. Two Wickham Genie single diaphragm pumps have also been provided for pumping out manholes or excavations and one concrete mixer has been provided for carrying out repairs. 5.3.2 Lateral Drain Jetting Eyes Jetting yes are particularly prone to damage which most often occurs during e .1 ^ exposure y excavating machine, careless rodding and subsequent ack ing o e soil. A mass concrete protection slab has been provided o e cap o e jetting eye to try and reduce damage when excavating down 1 o e eye. ls> owever, relatively easy to ° ne ° e J.eV'*n£ access tube. tho Y ^nn^t^eS compris*n£ the access tube, ■ , rpnn i r<= lo” pie ce are ma quick repairs to the jotting eyes. . de up as spares repair the jetting eye as most It is recommended that spare collector pipe connection and and stored ready for easy and c:\nscrdir\oandi\opcrAtio.nn 265.3.3 End Pipes Jetting from the open end of lateral drains provides an opportunity to observe the end pipes for sign of iron deposits. These end pipes are in relatively oxygen rich surroundings, which are ideal conditions for iron deposits. In comparing any iron deposits on a particular end pipe with the amount of deposition on other end pipes, some comparison of iron ochre deposition can be made with the free flowing characteristics of drains. 5.4 Bush Clearance The abandonment of cultivated land has caused rapid growth of bushes and trees over previously cultivated areas. The sub-surface drains installed in these areas are in some places endangered by the growth of bush close to the lines of the drains allowing their roots to penetrate and block the drains. The lines of these drains should be walked at least twice a year to ascertain the growth of bush along them. In some areas the bush grows remarkable quickly and should be controlled before reaching one metre in height. It is necessary to control bush growth in a strip some 5 - 10m in width depending on the size of trees in the area close to this strip. This can be done in a number of ways: 1) hand clearing - cheap but regeneration quickly occurs; 2) mechanical clearing by bulldozer, although without using specialised root ploughs, regeneration would occur; 3) ring barking of larger trees - hopefully there will few large trees close to drain lines; 4) using chemicals such as TDK that kill woody material. This is expensive and probably not available locally; 5) 6) chemicals such as glyphosate which kills green deciduous material but is not suitable for conifers or larger woody material; cutting small soft vegetation the PCC maintenance yard. by discing or using the flail mower in It is drain es ima e at a length of some 300 000 metres of lateral and collector f lsusceP 1 e to blockage by bush roots. This represents some 225 ha the PCC iispq USh growt^ to be controlled. It is recommended that 11 tor drflin \ °Zer tO pass down striP of land over lateral and s i" these strips. Once the to ke CP ° minor &rowth, the strips could be disc harrowed twice d regeneratiOn of the bush ™der problem 1S only PCC would be the State Farms to do this work. The fields and return th.. »■ d 11 cease once State Farms take over cleared working days to cover the sYri^Vf"! d^ strip with three passes of the machine °VeF b lld Zer ,° 4° " S’ ri"g * " Hlde c.\iBtrdi r\oindi\opcraUo. un 27It would be expected that some 10 ha of land could be disced per day, and requires 23 working days to complete the full 225 ha. Once roots from trees and shrubs enter the drains, they are dxfficult to eradicate. If the bushes or trees can be completely killed, the dead roots may be broken off by the use of a drain cleaning machine. One possible way to kill tree roots in drains is to inject copper sulphate into the drain pipe at a manhole or via an end pipe. The copper sulphate will not, however, stop new growth, so the treatment will have to be made annually. The best time to carry out the treatment should be at the beginning of the vigorous growing season. 5.5 Maintenance Equipment The maintenance of the sub-surface drains in the Melka Sadi and Amibara areas could be easily accomplished by two drain flushing gangs and one repair gang. Each of the two drain flushing gangs would comprise:- Plant Labour 1 Drain Flushing Machine 2 labourers 1 Water Tanker 1 driver 1 Tractor The drain repair gang would comprise:- 1 wheeled Loadrr/Backhoe 1 foreman/driver 2 labourer s The Suppl y Contr act ADP/T/0 3/90 has suppli ed the following new e quipment to the PCC w hich is sufficient to carry out the ma intenance of the sub-sur face drainage pipelines: 4 Magnet detectors for locating jetting eyes; 2 Steenbergen L-90 super high pressure drain cleaners, plus spares; 2 Steenbergen WT-6000 Water Tank Trailers, plus spares; 1 Benfra 4.11E Wheeled Loader Backhoe; complete with 1 X lcu.m bucket, 1 X 305mm trencher bucket, 1 X 610mm trencher bucket and 1 X 1200mm ditch cleaning bucket. The operation and maintenance manuals and spares lists for the L-90 drain cleaner and the WT 6000 water tank trailer are included as Appendix 5 of the manual. In addition the two 85KW tractors supplied under Contract Nr. ADP/T/01/90 and used for hauling gravel carts to feed the trenching machines could be used for drain flushing. These tractors, complete with spare parts have now been handed to the PCC. The provision of only a single tractor to each drain cleaning gang requires some planning to carry out the procedure efficiently. The sequence of operations could be: 1) The tractor tows the water tanker to the water source, normally a canal or drain close to the drain cleaning operations. The water tanker has c:\iserdir\otndi\operalio.ian 28a vacuum pump on it, powered from the tractor P.T.O which can fill the tanker in 6 minutes. The tractor then tows the tanker to the first drain that is to be cleaned; 2) The tractor unhitches and goes nnd fetches the drain cleaning machine; 3) The drain cleaning machine proceeds with the cleaning operations, pumping water out of the tanker; 4) On the completion of the drain cleaning, the tractor moves both machines to the next site; 5) The tanker would probably hold sufficient water to clean at least two drains. The tanker driver should estimate when the tanker contains insufficient water to clean the next drain. At this point the tanker should refill when it is next moved to a new drain. This system is rather cumbersome. The major downtime is moving both machines with only one tractor from the PCC yard to the site at the beginning and end of the working day, particularly when working far from the yard. The solution to avoid this downtime is either to try to employ two additional tractors, say from the land levelling operations during the irrigation season when they are not working on land levelling or to leave the tankers in the field overnight with a guard. Operational expense will discover the most efficient alternative or combination of alternative methods. It is expected that the three crews would be supervised by a single foreman with two labourers to operate each flushing machine, one labourer with the backhoe to open the manhole and clean it out and one labourer to repair the broken pipes. It is conservatively estimated that about 1600m of pipe (4 laterals) could be handled per day or some 32km per month allowing for downtime. Hence the total length of buried drains of 1010km could covered in five years, allowing the machines to operate for about six to seven months per year. 5.6 Maintenance Dy The Project Control Centre The existing Project Control Centre is divided into two main departments; the Water Management Unit and the Operations and Maintenance Unit. The total number of staff are some 250 permanent and some 100 temporary staff. T lere are our engineers in each of the two units. Some one hundred of the total permanent complement are watchmen. The provision of an additional engineer and the foremen, 2 labourers and 2 rivers >o work in the existing operations and maintenance section of the PCC should be adequate to carry out the necessary maintenance works. c:\userdir\oaadi\operatio.ian 296. Maintenance Work For Surface Drainage Syste. 6.1 Introduction The maintenance of reported previously Project. the surface drainage system is the same in character as in the 1984 maintenance manual for the Aroibara Irrigation However, the scope of the maintenance work has changed in nature and requires additional equipment, due in the first place to the increased length of drains to be maintained, and secondly to the greater depth and wider cross sectional area of the drains. In particular, the size of the drains requires the use of long reach excavators. Because of the problem of desilting open drains the maximum depth has been fixed at 3.5m. For drains greater than that a berm has been incorporated into the drain sides a 3.5m depth in the first place for ease of maintenance and secondly for stability of the side slopes. Figure 3 illustrates the relative sizes of drains prior to deepening and after deepening for the ’with berm’ and 'without berm’ situation. Maintenance of the open drainage system will be carried out using existing PCC equipment supplemented by additional equipment provided through separate supply contracts. 6.2 Scope Of The Work 6.2.1 Main Drain MD1 The design of Amibara Drainage Phase I does not cover the whole of the Amibara Irrigation Project. In particular, drain MD1 downstream of the primary canal cross drainage culvert MDXCI/4 will require deepening during Phase II, and the existing culvert will be replaced by a deeper alternative. This means that the existing culvert which has not yet been replaced is higher than the bed level upstream by approximately 0.90 metres. It is estimated that drain MD2 for a distance of about 3 km upstream will be particularly prone to siltation unti Phase II is constructed. It will therefore require particular maintenance at tent ion and it is recommended that bed level surveys are carried ou , a Slx basis in the first instance to confirm the level of Zi a a <?ccu’*I‘in8> and to provide guidance for PCC management, on the need for additional maintenance. MDXcV/V \nd Vhr>S,i°Uld be MDXCI/4 and the downstream pitching at culvert MDCI/3. t carriefl ouL between the upstream pitching at culvert Standing water in this area checking and maintenance di icult To -M . • • - ev" . ... v .. 3" pump delivering 75 cubic met res n h / V , 7" * P * supply contract, to remove stand situation where stand"fo ^Ve.ove^ Supplled under a sePa™te c.\userdi r \o*ndi\opcrii io. un 30Figure 3 Oldtw (J New ID* 1 _ t|! ______________ 7 \ I >>■' I NwBidUwl L3 ------•------------------ II TYPICAL SECTION THROUGH SD5 typical drain sections :'uitrdir’nport fgmim xirw6.2.2 Siltation Table 2 gives the lengths of deep open drains in the Melka Sadi and A-ibara areas as follows. Melka Sadi = Amibara = Total 25.54 km 24.70 km 50.24 km The estimated quantity of silt which will ( be deposited annually is 1.5 cubic metres per metre run of drain (SWHP) . The total annual volume of silt to be removed from the deep open drains is 75360 cubic metres. This is a small amount of material and it will either be deposited adjacent to the existing drain and sprend out, or carted away to spoil in tipper trucks. The removal of the material should be carried out in the irrigation off season between December and April (approximately a five month period). Recommended areas for disposal of silt from drains are given in section 6.2.3 of the manual. In the areas where spoil will be deposited adjacent to drains, this will later be spread by bulldozer and there is no requirement to use tipper trucks. However, where spoil is to be deposited away from the drain by using trucks this will require the use of only one excavator. It is strongly recommended, in order to keep efficiencies high and cost low, that all three tipper trucks are assigned to the one excavator being used, i.e the aaintenance unit is one excavator plus three trucks. The following outputs are estimated. Based on an hourly output of 60 cubic metres for one excavator using the 2 metre wide desilting bucket, assuming 75 percent efficiency, an eight hour working day and a 24 day month, the total amount of silt removed from the drains by one excavator in a month will be 8640 cubic metres. To remove the total annual silt deposit of 75360 cubic metres will require two machines for a period of approximately 4.5 months each. This should be reviewed based on operational experience and once a more definite assessment of the amount of silt deposited yearly has been ascertained. 6.2.3 Spoil Disposal Tables 11 and 12 gives summary recommendations for spoil disposal for Melka a i an mj ara respectively with approximate chainages for each drain, the disposal method and area in which material should be disposed. 1 Sir William Halcrow and Partners, Master Drainage Plan Annex 7 :\userdi r\oana«\operalio. mn 32Table 11 Spoil Disposal Areas Melka Sadi Drain Chainagc Method Area of Disposal MD1 0 to 3+800, LHS Truck MD1, LHS, 3+800 to end 0 to 3+800, RHS Dozer Adjacent to drain 3+800 to MDXCI/4 Dozer Adjacent to drain LHS SD2 2+940(SDD2/1) to 5+215 (SDC2/1) Dozer Between drain SD2, RHS and canal SD3 SD3 8+00 (SDD3/1)to 3+200 (MD1) Dozer Adjacent to drain, RHS SD8 0+00 (SDD8/1) to 3+528(SDD9) Truck 3+528 to 4+500 Truck 4+500 to MD1 (5+500) Dozer SD9 0, (SDD9/1) to 0+500 Truck 0+500 to SD8 (4+500) Dozer Western dyke SD8, RH5, Ch4+5OO toMDl Drain RHS Drain IHS,chO+500 to end Drain LHS Drain Chainage SD4/ 0+00 SDD4/1) to SD6 2+500 (SDC4/2/1) Table 12 Spoil Disposal Areas Aaibara Method Truck 2+500 to 5+600 (SDXC4/4) 5+600 to 8+500 8+500 to l2+000(end) SD4/2 0+00 to 7+00 (SDXC 7/3) SD7 0+00 to 4+000 (SDC7/4) 4+000 to 7+700 (SDXC7/8) 7+700 to 10+700 (SDC 7/10) 10+700 to 11+200 (SD5) Dozer Truck Truck Dozer Dozer Truck Truck Truck SD5 11+200 to 14+400 Dozer 33 Area of Disposal Drain LHS, ch 0 to 1+000 Adjacent to drain LHS Adjacent to feeder road crossing drain at SDXC4/4 RHS of drain at ch 12+000, between drain and MD1 Adjacent to drain (may change once the area is bush cleared and reclaimed) Adjacent to drain Between SDC 7/5 and SDXC 7/6, drain RHS Western dyke Abandoned area behind satellite village near SDD 5/1 Adjacent to drain c:\uierair\oandi\operatio.BaiE'dX“ IS . th of drain for material which will be disposed yearly o„ the disposal reeo..e„d.lions given „e: truck (23 km) dozer (27 km) Therefore approximately half of the yearly 75 360 cubic metres of material i.e. 37000 cubic metres approximately will have to be carted Based on an estimatte.— d 7 . cubic metres per truck and utilising 3 trucks, this is about 1760 journeys accomplished within the 4 6.2.2. 6.2.4 Surface Drains per truck per season. This could easily be to 5 month maintenance period proposed in section There are a number of new surface drains comprising field drains up to 0.6 metres deep and tertiary drains up to 1.0 metres deep. Maintenance of these will remain the responsibility of the State Farms. This will be carried out by traditional hand labour and small tools to remove annual weed growth. A budget should be allocated for State Farms to carry out this additional work. 6.3 Maintenance Equipment Supplied Through supply contract ADP/T/03/90 the following equipment was provided for the additional maintenance of the surface drainage system. 1 NQ Crawler Hydraulic Excavator, model Benfra 9.06 special The excavator was provided with the following attachments, specially provided for maintenance of deep open ditches. three piece boom with a maximum 14 metre outreach standard excavating bucket, 0.6 cu.m orientable ditch cleaning bucket, 2.0 m wide weed cutter, 4.0 m wide In addition, further equipment will be provided to the PCC in the immediate future comprising: 2 Nr CAT hydraulic excavators with 17m reach; 2 Nr D7 CAT bulldozers It had been intended that 3 Volvo Dump Trucks of 7 cubic metre would also be provided through contract ADP/T/03/90. failed to materialise. However, the PCC ? . , Paci y trucks through another source. It is recommended that ca irrlgation. arC USed f r drain s oil ° P disposal during capacity each have received ^ason for c:\uierdir\oandi\optratio.iiin 347. Drawj ngs "As built" or construction drawings were prepared in detail during construction for both the surface and subsurface drainage. A reduced size copy of each of the relevant drawings is included with this report for reference as Appendix 4. A list of drawings is also given in Appendix 4. The drawings supplied with this report are not the full complement of drawings produced and relate mainly to the subsurface drainage. Three full size prints of all the drawings will be supplied to PCC by ADP on their completion. The master negatives for the full size prints are held at the Ministry of Water Resources Design Centre, Addis Ababa. c.\userdir\oa«ai\operitio.m 35APPENDIX 1 Checking Pipe System? \iserdLr\oiQdi\operiliOianappendix 1 Checking Pipe Systeas flow path by means of piezometers. Figure 4 shows four common cases, with the levels of water in a series of installed piezometers. Case 1 shows impeded infiltration or percolation of the soil, which is usually evident by water ponded on the surface or by the occurrence of a perched watertable at some depth. Where the flow impedance is due to a hardpan layer, ripping may solve the problem. Often the causes of impeded infiltration is soil compaction, e.g. due to field traffic under wet conditions. Case 2 shows a high resistance in the groundwater flow towards the drain usually due to the hydraulic conductivity of the soil being lower than was predicted, or the impermeable layer occurring higher than expected. The appropriate remedial measure is the installation of additional drains. Case 3 shows high entry resistance where the drain envelop has become clogged. Not much can be done other than installing new drains. Case 4 shows obstructed pipe flow due to:- 1) too high a watertable in the collector or open drain. This can be corrected by cleaning the collector or desilting the open drain. 2) misalignment of pipes due to poor installation or damage. Can be corrected by repairing the line. c.\userai r'\oandi\operit io. i&nFigure 4 c:\userdir\report.fig\piezoLdrw Source: Land Drainage, Smedena and RycroftAPPENDIX 2 Drain Clogging By Iron Ochre :\userdir\oaadi\operilio.lanAPPENDIX 2 Drain Clogging By Iron Ochre This problem is to be expected when soils which contain iron su phates are drained for the first time. Typical soils so affected are lowland peats, recently reclaimed marine soils and soils derived from iron pyrite bearing rocks. Virtually all soils contain appreciable quantities of iron. Generally in a well drained, aerated soil it occurs as water-insoluble ferric oxide (Fe.O.) which remains dispersed and immobile in the soil profile, causing no problems. However, in some badly drained soils the iron occurs as iron sulphide (FeS.) which is oxidised when the soil is drained to form the water solvable ferrous sulphate FESO^) and sulphuric acid (HgSOj). 2Fe2Sg f 70g + 2HgO -* 2FeS0 + 2I« SO <24 The ferrous sulphate is unstable at near neutral or alkaline conditions (pH6.5 or above) such as exist in calcareous soils and it soon oxidises further to insolvable ferric oxide. The orange staining which results is normally observed as localised mottling, well distributed throughout the soil. If a lot of iron sulphide is present, the sulphuric acid produced lowers the pH and stabilises the solvable ferrous sulphate which then seeps in solution to the drains. At low pH (<4.5) certain acidophilic soils bacteria catalyse the oxidation of iron sulphide which then accelerates the production of solvable ferrous sulphate in a self promoting cycle. The solvable ferrous sulphate is liable to oxidise to insolvable ferric hydroxide Fe(OH)j either by direct contact with atmospheric oxygen or by bacterial action, the latter resulting in the formation of slimy filamentatious deposits in and around the drain. The insolvable ferric hydroxide eventually turns into the more stable ferric oxide either by drying or ageing. The severity of the problem varies with the Ph of the groundwater and its divalent iron content and is most acute in low pH, Fe rich conditions. At Amibara the soils have a high pH (around 7.5) which means the risk of iron ochre is slight. In extreme cases, the rapidly. pipe and envelope can become totally clogged very The available evidence indicates that the leaching of rate some two or three j--------------------- iron rises to a ip __2. eak years after the installation of drains, falling off until eventually it ceases to present''problems.' Th. Amibara Drainage Project is that only one trace of a fi1imentation material * aS f°Und in thp Drainage Pilot Area and the likelihood . The current evidenllcUeB f1 Lromne the deposition can be cleared by flushing. . . ' . ? r°m lron oc*’re will not be a serious problem and any minor c:\uscra i r\oandi\operatio.mAPPENDIX 3 Sample Fora Mil c:\u8erair\oandi\operatio.ianAPPENDIX 3 Sample Fora Mil PROJECT CONTROL CENTRE - OPERATIONS AND MAINTENANCE UNIT SUB-SURFACE DRAINAGE WORKS ROUTINE REPORT/1 NCI DENTAL NOTIFICATION OF WORK REQUIRED INSPECTION BY: (Signature) FORM SIGNED STRUCTURE SUPERVISOR/ DRAIN CLEANING SUPERVISOR (Signature) (Position) WORK REQUIRED APPROVED BY 0 A M ENGINEERS (Signature) WORK REQUIRED: LOCATION AND NATURE: Components: Collector/Lateral Drain Outfall Concrete work Rip-Rap Pipe work Earth works Sub-surface Drains Buried Pipe Manholes Jetting Eyes Notes Is the sub-surface drain flowing WORK COMPLETED AND FORM MIO ATTACHED STRUCTURES/DRAIN CLEANING SUPERVISOR (Signature) WORK APPROVED AND COSTED BY 0 4 M ENGINEER (Signature) (Date/Time) (Date/Time) (Date/Time) (Date) (Date) c;\userdLr\oand«\operatio.ianAPPENDIX 4 As Constructed Drawings .\userdi r\o»n(1i\operilio. iaoAs Boitt Record Drawings, General Layouts And Schedules Drawing Title Surface Drainage Me Ik a Sadi Area Amibara Project Area General Arrangement Surface Drainage Mclka Sadi Project Area General Arrangement Sub Surface Drainage Mclka Sadi Project Area General Arrangement Amibara Project Area General Arrangement Sub Surface Drainage Amibara Project Area General Arrangement Surface A Sub-Surface Drainage Schedule Mclka Sadi Area Continuation of drawing 12 Surface Drainage General Arrangement Schedule Surface A Sub-»urfacc Drainage Schedule Amibara Area Snb-Sarface Drainage Mclka Sadi Drawing Title Sub-Surface Drainage Block 1 Sub-Surface Drainage Layout Block 1A Sub-Surface Drainage Block 2 Sub-Surface Drainage Block 3 Sub-Surface Drainage Block 3A Sub-Surface Drainage Block 4 Sub-Surface Drainage Block 5 Sub-Surface Drainage Block 6 Sub-Surface Drainage Block 7 Sub-Surface Drainage Layout Block 8 Sub-Surface Drainage Block 9 Sub-Surface Drainage Area 10 Sub-Surface Drainage Layout Block 11 Sub-Surface Drainage Layout Block 12 Sub-Surface Drainage Layout Block 13 Sub-Surface Drainage Layout Block 14 Sub-Surface Drainage Layout Block 15 Sub-Surface Drainage Mclka Sadi Banana Unit Drawing Title Sub-Surface Drainage Layout Block Bl Sub-Surface Drainage Layout Block B2 Sub-Surface Drainage Layout Block B3 Sub-Surface Dramagc Layout Block B4 Sub-Surface Drainage Layout Block B5 Sub-Surface Drainage Layout Block B6 Sub-Surface Drainage Layout Block B7 Sub-Surface Drainage Layout Block B8 Sub-Surface Drainage Layout Block B9 Sab-Sarface Draiaagc Amibara Drawing Title Sub-Surface Drainage Layout 1AR Block Mclka Werer No 1 Amibara Settlement Project Aicgeta Farm Sub-Surface Drainage Layout Mclka Werer Block 2 Drawing Nam her 4 5 6 6A 7 7A 12 12 cont’d 12B 13 Drawing Number SSD 1 SSD1A SSD 2 SSD 3 ADP/V115 SSD 4 SSD 5 SSD 6 SSD 7 SSD 8 SSD 9 SSD 10 SSD 11 SSD 12 SSD 13 SSD 14 SSD 15 Drawing Nnmber SSD Bl SSDB2 SSD B3 SSDB4 SSDB5 SSDB6 SSD B7 ADP/UA116 ADP/VA118 Drawing Nnmber SSD AMI SSD AM2 ADP/V105 ADP/1/110 ASP/V111 c:\uscrdir\report.fia\OAMdraw.wk3L L L I I I I I LI I I I I I I I I I I I I I I I I I I1 < 1 II I I I I I I I I I I I I B B B B B i 1 1COU "Pt M XAMU .'MAM A !>*. -a ’■O" Ui«l OP "R ; twn» ut »n sion HOFAHAl "R W 'l out ku. CMAMA COU « ’■0" 1 OUT* AU p<r n,™ CUl tvtl O' "Ft CCHTOtiM I. 1 "R iUt tai - II _ - ... Mt__ COU. □jt.Mx cu»a COLL CMUCl icvtl » KCM "R OUTMl MAC "Ft SUM Slit axt nn m DUTMU O-AM V COU CM>ua »«<R DUT'AU am of F*t ctwmiM MO«U>Z "Pt M"t COU Sl»( Mt •... CHAMA FAO" OUT FACI GL( t«l OF LCMTB^LIM P.R P.Ft cou V’A. ... CUT* AU OBA.N 3 COU. tit •t/l — • Mi ait •00 AM »0> B 04/V4 •v» rZ • i/> • M toi • • ir • M 1II lit ’’.’X - tat »m r •- £3 IM • .w »an »I0 «• • 1/VI I •1/1 ?.’.w • * • VI/4 •Wl • VI - Mt »»»• *00 •• ... •|Zl« . Bit . 1. •wi I.* •• • •• 110 «00 •va »»0 • M0M • W” B0 TM .7 •R _ nr •v» til .0 tit ... N'Minni HMAB »F W * 10 IM •00Bi> - ... FV. Bi V • MB/' »V" • - •'/•/I »v» ’H’S muvm W wW Iti lii Mi ______ • 4ZWI IM ,M« — •* 1 ti nt B. Ml »MM 401 •• •IMI m «»t •** .v. •v«/» •VI ••’M/B0 M Bi mb 110 Mi IHl KM«VW0M BA IH .. 0B a i0 01 IN m IM IM rr-i »w -J Hi _ >0t IM .. nt ** • 00 •00 ... lit an H0 • V«^0 Mi • • M 3 M0I II0> It 0V • H 00 It M>/^IM0< tv •• M •W/*M ba »|0 a r. ■„ •MR 0 ei • V|/l • VI 3 •K>M ti 0 • ... 1* ata MZ./» m W It BB M 0 *0 m W0 MM ‘ *Z - M. 1AL_ 0VM t»0 Mi«it 'HIM R >et/H0 •• WR . i ti .0 - W>M/n0l00 >a it* •vn F^ til tit • tat IN W0« ■“ 0 ’• • n • 00 • u n .. IM >■ •vvt •V0 »M Hi nttAv *m M »a m »■ <^0«» rw am .>• Bi •• W «• • ■ -1 • * :. X M» 100 • IMM .(• »> • »W M' ... • • M in I0t Ht Mt .♦« >•<« *• in BA 0t ... we 1 IM .. *VI »VN •• • •- tn i in •M I •R0M • - -- .1. •M ...... ”zr” »w. •v* • 4M/I »IA •W0 IM 100 ••/> • Hi ■! •WV’WW nttt .... •VtV* 0M »|z^ r i ... »f0*»t • '0tV^M» ... Mi0M 0 *t •“ ~ - -J nzw/< •■0 it *W0il ... Ml XM PWVTmil 1 ’»• rB^w WJ1 •MM — . >. »M ia mm • rib ’ 10 010 *|0 0M ma TW*M L. ’-d FM ’■0 Mi WHIM •» MMI •» m ... .- >n ... AM •VB W0 Z •- :: ' u“z> •1/M M» B»«M^*0 IM B»Ui M. HIM m wt/aiii *>• 00 -. • VW ... • ... M> ••• :: : tn «... —’*4 Mi - n. ra •a - *“ IM •B00 •*<* ->• H IM »l»M> ■ •I/aa/I • Mt . MM •Mt *00 00t -WH 277*. .. IM • M ••• »n «• • n — 001 •• >M •'■ru n> *»MZ-* M n.n H r «• nt •VI MH MM »ll IM m.ivM m MM ti 0 .. .. "J 1 m. ....™ NM HiHV^a M •: im 'M 00 0«A *b"0* »J0 a ... »|/^ ••• • H0 F.ZW. •VW • 'BilB II’ VBB 10 •m »n ’ > • »w/ n» IM '•IBM • 00 l.n. <• • M0 * nta/rM •’< ’ W»«0/B0 |A •M Mt •ft »f» _] Ht . iM . :: •tzWl • l/W 0n II0 4VH0M0. ;* •V0 • nt Mt .. M» aMzMB AM •»/M IM • -J ------- -r •1/M rrcTT- •w >n» • ant/tati mw 100 M0 ______ TM t0 •10 F» MB •• ... - •M 00 mu R _____ 0 m m> • >» 10 0 00 .. - - .1 .... lit »m»m , Ml »»•» 0i »•• 00 •W»M •M •» •Wl •vi •un - .u •v< _____ •i/1 —0 r> n. : ’ • j :-4 3 • V 0 tti 3 • M L- >M 1 n-. • <»» • 00 •imia •Mt» nt ate •M 0 01 • •• • 00 IB ’ •01 'MM • »0 na 4 Mt Hr •MMVBB MAHiZBA ■ *W 0VB0 at B> ,R Hi * Hi Mi tiizwi 1 •V0 * 10 ... ■ 'W.W •MMBZ.Mva ^.11, W-. >..w • »/V0 • l/Vt _____ *10 M • 10 nt •IB •*» B*00 Bl W 1 01 Mi ... >>»m *» tn »n m •• • 0i 'a -4 .win RM »0i i0 A* Ml •»m »M 0» | *• —• j ni »v^/> •v» ’• »0 L?“ F^Z. • VW • '- k •M tit nwr.....*- *• •>» •• IM Mt •f/l/A • l/l •V*/| •>/• • • IM »M Mt Bl Bl ’ “ w "1 ..z« ti I m Ill **'“ 99 00 ’» H »»»» til •M H H*U ««■ 01 ’»D. • •• *»• >1. r ti r *’»zn..w in >W •»aw/-»«0 ' i * ...n ' •0/1 M •a m • H 0« •bw. •1/M • 0 li 001 Mi •* —"'—J ,. Bit m z r IM 0 __ itL. »»»» »M M •M 00 •• m 0w nttwima. •Hl 1 w IW 'Mn.zn.Mi T t • Mt •«• M> • VW —M ta m »0t •»0fV*B 00 M0O 0 t0 Mt N- »MZ. •an • • /> .1 m *WM :: Mi .n nzv. Hz. 1 'Will - Ji • I0t .WIN >. w > - - _ •• •M ’»'»«» a •ww M>W h m •M n/tn . Ft m• •vn i .. I !,rt^ _______ — •• rwt IM0M J 0M *M AM WiVWlU ir »av FWM^TN/1 »P • L- s WAT(« ■(SOACK octttORVff autwrtt axsaaa obaiham frucct stag* i SURFACE 4 SUB-SURFACE DRAWAGE AS BUILT RECORD SCHEDULE MELKA SADI AREA 1 m. n »»> »> T s »—■ w »■ Sama O»»<W< t| D*’« -*■ jilCOLL AR * L N> V ATERAL LENGTH OLfATERA L NANHO LIS ’■ELD 45 “ rjitr ranan ■LOOt OR AMA FIELD ORAM LENGTH FRIO ORA •ED LEVEL ATOffFAU MMO SLOW .. outkl M OUTTA U BUX AREA ■MAh MR LEVEL E rvvi FVt F WM FVt »•/• FVE FWI »VI »V®/» »BV1 FB/W FVW >vtv» run fvib nm M/tl .*0 l» • M M if n • -1 »■ «4MI •IBM ■•M t®0C •Ml im inn NN a®n am MW 11M MM W • Ml BBS IMI itw ww m W ■ • ■ ■ I® M nw M» 0IW ••• ■*a I 1 • 1 f 1 1 a 1 • • 1 • • • B • > 1 • 1 I • • • 1 • a • 1 • •a • •• f®f F®F F®® M( F®® FM f®f F®® Ma »W 00® F« »N *IF •M •M ••I F®1 F®i FM F®« MC ••F FW FW MJ *M INN mM wan mm ms mw WMI U»M M»« W*M JMM M»M iw® • MB •>■ rx« ill •■ Ban mu »M BMW IM M rw w wi ■ MNW »»• r» ■ »■■ TNW »W M •Wil HON tai m •MH •MW »w ■ ▼B®M WM >M<T BMW •a M TNI! naw • M 1 •> 1W • M >«• aw J RQDM ■ OlETRl CMTTALL I- ■ •-» • ■ I • ' •• ’ •-1 •-» ®<a • •a •-a •-a »>• Fl •■at •W M »>W® •■ a® Mil »M N •WM T»W TMW T»U »n h ma® »■ M BMB>® wa ata TBaatB HF FM Wtr »>a aia naw ••an ’■ata ’■ •• ERVUY NFL S®.» •■ ta •>>aa »•»» ’■ w • N ft n»ea awaa n» w TU mn BBtlt • J Ma •»» HELRA SAtM OUM w LENGTH DESCHAR CAPACITY G“••A E X MDSLJl HAXMH HIO» t® v> •®fzt Wl/W Tll/11 Tom 1B0® IMU uw IN IBM UN IBB® 0 >M ’M • M »U • « • » 1 • ■ rw r• »W 11 • ■ a® ■w HA&tWW uvu X-XJAUMd 1UM TWlB ’■N hbn >» w •M N n>n w»w •MA ■n» WNaBO •MWT wow naw •MBB naw no aw non WM • » • w »w • to • M t-M • W IW IM an 1 •• • WB *■ • Mi W» • aw • ■ • I® • aa • » IB® FEM FMB »0X FOW FoaF »e«* MM >MA '■M «MA >M< FBNJ F®N« MM F®e® FM< >MA • Ml F®tF Foaa • •M •M> • M> • M. • M. r#a< •MB »«■ • M» •» •Ml •-• I- •-» • - a • •• ■ •I »-• II • • • • •at ai n« w rw a» >■ « • IB a® •»»•» • IB M MBA •»■ TM®| *■■ •la m •Baal ’ »a aa nt at ata » n»-B fbbu TM BBBB1 F»»at mw »B» N • W W »>••» • ■Ml 'i aa IMF • >« a-a >... n»aa mn ’fa at »■ ij mn •■a® •■at rw m 10-B 9 io a B®-B W-l M-a r®vn Nl/I MV II r®f/v M-l M-1 M-l »•-• t®-t M • a »•- • rti® r®v« • >/* •J/a CM 1 w-» w- > M-. •- • M-. »-< TERTIARY DRAIN SCHEDULE n>w BMW mw «M «■ • aa IH • W» • ■ • M • IF ______ FIELD DRAIN OUTFALL SCHEDULE O UTFALL N« ttm a• »•» »•* »U »•< B •«c <•< CM hvtc OUT FIU. ’MALMO KC^t LEVEL ONMN V HI •■ »• n»w l»«® :: MW •a m •M ■ • oo • I® M-F M-o w-» w-o B®-B M-0 WVt MVB IPI BCBZC HB1/W MVN 1C1/W KM Wiw waza MBZ1I W1M ®VT> wi/tl w/n MJ M-l M-f nizu • -a m *a w-a M- • M-a Ml® MBA MIA NIA m® Wlza -»*A • ®VB Wl/l B»VB ••VI »N®1Z KIVN tea ■ rwoia *<aazo rc®M tow n»j/" rca ■ Win roova MOW rca»n® no VW • Man MNVI W® >/ tea v> «< a< IN in D tl IB tl • 1 >n *«ow F>w ww now nan •■• wan ’••M »>aw n» ■ •B® aa n» m »■ n rWW noaa *■■ •Zh ... — non na« na w nan FNW m« n® at na >• naai •M IB »M W »■ a® mw ... • aa • W t• t Bl w- < M-B a® -I SC HE PUL I C**W N« QA CONT OF QRW N- QOLHMU N* ■LOCK F It U)lON ANEA iKOlMl ojtnu AF*INAL ■ED -L.-tL OtKAL LOW LI . NFL DNAIN * STNUCTU N> NN 0 FNt LENG >CN FINAL ■■'-I MNIMJ .(YU. >IU riM >M< MS • aw 9— "M 'Ml »BtC 'HI 'M> M«» • -* B- » •-V • - ’ 1 ... • -a t-a • -• B- • •was »W M vw *a n*w *»n MB VB n»n V»B W »■ n VW M vn vs »n •• naw vsna *♦ tW n.» HBH 1PM m ii VW w »■ n m*. save v/s »■< »/a me rv ioa< v» WK w »»i v» VBBC W NIN Of hrt DMNWN n»n VMW mn V>V M vw n vww VW •• M*V SB-S SB-f W-t SB- V W- V ■ jrvv VBI/W r.izn VBI/W Wl Ml SSI SS-8 w-a SB-a SB-t sa-a IB -B VC 99 W>/% VBl/a TBW vc w IB- I W- I W-B W-> "B- • MB-v MB- • :::: 1 1 1 1 «aaa was •aw IV M n M n it rnta rnv si na n» v ma» v»aa ns u m ai VWR VMM n>M ™ vwa ata ata aw wa SB MB nw bi ISSB tBB IB Bl srwtnt slhedlu ambjKa am* »W Bl n*>» VW W nan n»« VIVM V|BU VW ■ »M M na ai m aa »M U na m na ■ ’» M V|»M ’■« nr m n’ w WVM »>v w » IV.IV VIV-W nv • vn M naaa na as a* OG . BL A c B vwa ... B* B ■ -• »BC1 tBCi VBCB VDCa VBCt ns aa mats V»WB >B W n... vjwa v ww vw tn vwm vw m TIM man man vwm vw ws »>VVW vwaas vw ats nt>i • - • »&•/ • - • 'MB • • • . *••1 • .. »U«J »- • ... 'M* »MK raw •aw M«l I MB •»• ’»• M ’>• )W vw w vw vs VWBSB n»>. ▼ww vwav »WS vn »> nvn ’Ml mn VW-W ’)’• TW M fielnonain culvert on ba O6L BL A B c ’BCM BBCB met VBCB MM vw at naw n MM HBtlS vw VW m BBS VWatl VW B VW»a naan vw wa « vwvw s vw ws RCLO MAIN CULVEBT ON BB •HIBM A R.f 0GL FM BL A c B ■IF OCL RNAL BL A C a vac a •a< a BBCC WCI BBCB •BCB •BCB van VSCJ •SC i • ■ ■ mas na w ma vwav n> i9 mas T»M vw ■ »wn *W a» m ass m SW V» MS INM min VW VW vw ns ms v> IM min -um m wb VW Ml VSV M vwarn vw m vw as vwaw maw ’Maae VW Hl Snvvn vws ’■W s VW-W B VBCt FBCB BBCC VBCB rati tact ties vac a VBCI vw as VMtM mb na VWRi vw m vwaw M*« vwn vtasa NM »wn MB •w )S >W W VWB •wav •was MM nt »>s •tarn vw BBS vw tn nt ms >w MB •watt v» sai V»BW naew nvM »wws ’Mia vwais naan ’H M1 •WtSS vw vw BBBB BB MB ▼w vn VW MS MB BBS nwn ’WWS »jms vw wa w OC-L FMN BL A B c nt wb VM vw vw BSB vw vaa »WWV na mb ?I»«M *wsw vwnv vw aw FIELD DNAIN CGOBON n FNC. • KC 'MN 'Ml me. vwm vw wv vwwa vwm vw m VWS vww VWS VWS vw W •IBM •w VW t sm Fit DONAN CULVOETON NW - J nci VMCJ vwaw vwws •wna »ws VWOBB VJBW naaaB vw <w I ms vw SM naan v> m CM.WNT3 ONTBIZI A WT (MN) iHI I I I I I I I I I I I I I I I I I I tVT»A4 ecu Mma "M ■ 1 CCU OUTFAL ■A1 ‘st uv®. of R« L awiMmi ini "R slbw OVUL "R SIM can >lOf M> sutml. auxi ecu 1 OUTFALL —1*4 Itvn OF Fl« (<■( LM( RFf MR __ ni at »;»mi i.i « »•*» RH SIM C«4 Lw>««h IMru •I *s 1»1 M r«. Bmbx >n m IB 1 _M IBB nt* •MB n« n/m mi n> mi • •• B «• n« :H 14 I IB •B/tn L • in 'MUI HIM* • H • n m B MB •BB •Ml bn .. •v» •VM W»f> mtM/nttR V *»• MB • »w »U B* Ml M • B B IB • BB • • •> mtB •JLM m bb I 1 ’Ml MB ~T11 KI . ’U mwmw» »1> MB •BB >M_ ’ IN • B • B MB >•1 til MB • n bb • Bt * tv •BB •V14 IBB B • M •VI IBB IM •BB — • ni mm IIBVT7I B W»» •VI •B7V1 •e/B/t •l/l •Vl/1 BVPl BVVI •Vt BBZB- •B/B bb/b •vn •Vtl B 1 B MR rw m M» 1“ • nt mb YTT B BB •WBB n<vm» n» bb • Bl BP MB •Bl —— »b BBB »B/| M.'l •MB hir/rh ’W w u BB is >M IM IBB • 1 1 B I f 1 » 1 • • B 1 V > > 1 V B I 1 1 n ■1 ’ibibb 1 ••n Ml • IB •n ••• •Hb mm m m/mm •MBBvmm m<n IB IB tw • Bit '•M »>• «M MW mtW MBBVMBV mu • n • • 4M IN *M m MO •BB 2T •• B »B >M »r ~ MB ’ BB ~ •VI J, • «B ... *W1Z> •VI/ > —fl »n mb mm M, • M •tn RBI MM MM HN •MB BIW BIB •m MBB ><n Mil MM «IM| UB M«B| •BB* IMB 1 1 • 1IBIM miwmii MB/mm •VI p’ •BB •Mt • « • u >R IB IB '** - M|/k H* •1W ••/I *MW1 BMVWMM mm • BB n»M RM IH t»> •■ «• •v«v» •VW • B^n •Wl •Wl •VMM •VB •vt •Vl/1 •Wl •VI/1 •VI •v>n •BB • > 1 ? 1 1 1 » I B new m B/MB MB >M m .— •MMB »wrww L n m/m bb Ml n>M •M w« _ BBB bn BB • BB ■1 JM Mt itt MB •vvt • M u ... __ • »• Ml B • •B m» mtn 111 '» razr**. f" I«W1 •” — *n >M IM — X •M •v» »M M r»Hvn^ mm «*zn*« nw'mw n> tn •LKI OB *■1* FCLt ’■ClOMUMi III* TH IBl FBLD OBMB 1 tUlML • _ lit - •a SLOB* OUTFALL TO u •Bl :: III *___ 'BB ••VI •V* B IB mm mtn « OUTFAU OKjMK •* MV2 • w ■T - 14 I mm >»ito • t ■»M ••n DC SCR nSCMAAM •*z» • •MBB * __ y»«« “n ... 1 I Mldctm »> MB MB »^*/1 ••/n IB JMB FMH »>• M • Bl BW • 11 _ BM IM ib _Mt_ OftJU n>ro r«B/» MVB ’•VB • ovw ’•Vt JOCBUM □erm B-B • H W» •Bt RJHFUM uTML AT) OUTTAU ( :: 1 ’I’M m> mb • mtu___ 'Ml l2 OCDSUJKR B/tM • B B» • M L” ~T7. » •• n>> mn ’■ .> mw »I1 w m■ m >» *» n ■ ;c •« •B 1w • B SB •|*R •/* m/B ’•VW ii>mb HBM »p in TtBTIABT OBAIB SCNTDIB. traiABA AMA 'rw BI • MB • m • M • M MB ••/»> 'I’lM n» m IBB MB • » • VII MB ______ •Ml T»*W» B1 B »»w» _ • n_ • t> • VI IM »»• »» " U° 0,A-* SCMtOUlt ■---- *"'**\*«tA IBM • ■ w hwm ■V** •*»» _• 3 ’"W •» ■ . m__ BBI SURFACED SUB- "3 SMT ‘CCGHD KMCDULf AMBM AflU UtO STAM | SIMM! ORAMAGF 13 S<M« rs____________ D-~- w « I ttM— ■__________________ _ Jn na _________________ n.imni’*. m............................ >mi MuTERTIARY DRAIN■1SUB-SURFACE DRAINAGE LAYOUT BLOCK 3A MELKA SADt_________ COLLECTOR FROM I OF T 0 ,. «T '.AH’* * 0 0 • tro* I j£'or 6L0C* ’ p'Pe Gradients- shown ARE Pruvsonal t subiect to review* Depending on actual ground levels All laterals 65bb Ota bimIbub gradient 0 10 % but steeper »a y be possible To be ri Laterals ’viewed as aboee ■ to be at 30b centres. SCALE: 100b Drawif^ M> ADP/1/115 Oate 25.3- KI £ 1I I I iDr,^ If SSD » | SOU 15M» wN« SSO» | Sate T5000 Appro.2 - WATER RESOURCES DEVEST A^HOR'H amibara drainage project- stage SUB - SURFACE DRAINAGE BLOCK 9 Drawing N* SSD 9 jZiTtSOOO Approx.s5 STATE FAB* head quarters First t«t«HX, 25« fr®« ' •f F-D 7 -----------■^7^ZZ7r DEVH-OpHENT AUTHORirr _ SUB - surface drainage area 10 onwng * 950 !• Sc»l* rSOOO MP™ 1 I♦W Laterals at M ■ antra* y - -y---------------------- - Laterals at so ■ centra* gradient S.WX Fl/1/IV 1 freaieet J • w% ______ ________ ________ _________ ________ .______ i» 25 ■ '1 N m dii fa M« ■ m ud, --------------------------------------- ---------------------------- 'i ? All tfaa >* * Il 11 F1/1/12 ----------------------------- •» I s-------- --------------- 1 ---------------------------------------- ---------------------------------- - ~?i F1/1/13 , 2 •Mas ------------------------ -— I’ KEY Field drain -------- Field can* -------- 33San die pipe -------- 45 •• die pipe --------- Man be la laaove ground type) Man Sou ( Setov ground type I Outfall WATER RESOURCES DEVELOPMENT AUTHORITY AMI BARA DRAINAGE PROJECT-STAGE 1 SUB- SURFACE DRAINAGE LAYOUT BLOCK 13 Drawng N* SSD 13 ScXa 1 5000 Approx Designed Dy NHF Chcked by AJP Drawn by TH Date July 1993I I I I I I I II I I I I I I I 1 I I 1 1 * 1 1 u 1 • -1 1 » e» _________ _ 1 Lateral* at « Ma caatr** Lateral* at Ma caatr a a ■ *ra*laat «ra4laM 1 >: * ■ I M bb «a ter ___________ 151a *■ aacb a NM«tW2.Sta , m aacfc O J-< • » j __ mQA .L.« 1.» 7 5 • F/1/7 F1/1/8 F1/1/9 F1/1/10 „ , 11 |u r __________ ih r *• ] FrH — - ---------------------------- aUc Laterals at 1<5 b caatra^ ( 'fWlaBt I5 |kW* 1 Mbs ter IMa 1 .la aacb • 1 Ml. WATER RESOURCES DEVELOPMENT AUTHORITY AMIBARA DRAINAGE PROJECT-STAGE 1 SUB-SURFACE DRAINAGE LAYOUT BLOCK U Drawing W SSD U Scale 1:5000 Approx Deigned by NHF Checked by AJP Drawn by KB Orfe July 1993i I I I I I I 1 I I I I I I I hi i"ir t WATER RESOURCES DEVELOPMENT AUTHORITY AMIBARA DRAINAGE PROJECT-STAGE 1 SUB- SURFACE DRAINAGE LAYOUT 1 I BLOCK 15 Drawing N« SSD 15 Scale 1.5000 Approx Designed by NHF ft AJP Drawn by TH -Bik Juli 1W IWATER RESOURCES DEVELOPMENT AUTHORITY AHI BAR A DRAINAGE PROJECT-STAGE 1 SUB-SURFACE DRAINAGE LAYOUT BLOCK Bltaaa^aat • : B- ♦ - »* •• KO MM ,|UX KM ■• waM UJr* WATER RE9URCES DEVELOPMENT AUTHORITY AMIBAR DRAINAGE PROJECT- STAGE 1 SUB-SURFACE DRAINAGE LAYOUT JLOCK B2 N . SSO I2 ]s«. rsooo , ApprpI I I I I « I II I I I I I I I I 0 W % (radiant LEGEND Manama abmra ymund P2/12A P2/13 Caltactw Mtfall P2/13A1 P2/13A P2/13 WATER RESOURCES DEVELOPMENT AUTHORITY AMIBARA DRAINAGE PROJECT-STAGE 1 SUB-SURFACE DRAINAGE LAYOUT BLOCK B3 Drawing N* SSD B3 Scale 1 5000 * .1I I I I I I I I I 1 I WATER RESOlMtS DEVELOPMENT AUTHORITY AMIRARA DRAINAGE PROJECT- STAGE I SUB - SURFACE DRAINAGE LAYOUT BLOCK N< BS ) DrMWf* SSO »5 i*— 5« 1 SOM by NUT CbKfeaA W A J t WK.* Date Oct IWWATER RESOURCES DEVELOPMENT AUTHORITY AMIBARA DRAINAGE PROJECT - STAGE 1 SUB-SURFACE DRAINAGE LAYOUT BLOCK N B6 s Drawing N* SSD 06 Scale 1 5000 Desqned by N H F Checked by AJP Drawn by K 0 Date July 199 3Te Mmm paclonf ataHw WATER RESOURCES DEVELOPMENT AUTHORITY AM BARA DRAINAGE PROJECT - STAG E 1 SUB-SURFACE DRAINAGE LAYOUT BLOCK B7 Drawing N* SSD B7 Scale 1 5000WATER RESOURCES DEVELOPMENT AUTHORITY AMIBARA o rain age PROJECT-STAGE 1 SUB- surface drainage layout BLOCK B8 Drawing N* ADP/1/AT16 Sate Designed try Checked by Drawn by K B DareSUB- SURFACE DRAINAGE LAYOUT BLOCK B9 FELKA SADI Drawing ADP/1/HS Scale 1 SC Designed by HHFI Iworts • (MB • ■ M — MU I UM • “ CMnwtM M C mmm ».«.» • M • a n. — mill . >■. «.a.i.«. ■ I 1I I I I I I 1 I I I I I I I I I I I 1APPENDIX 5 Operation And Maintenance Manuals And Spare Parts Lists For: L90 Super Drain Cleaning Machine - WT 6000 Water Tank Trailer c:\use rd i r\oandi\opcralio.Spare parts * Type L 90 SUPER Serial DS68 Prod. Year 1992 Chassis nr. HD2689 AND HD2690 Motor nr. i Steenbergen Hollanddrain B.V. Ftyksstraatweg 100 Postbus 7011 3286 ZG Klaaswaal Holland Tel. .(0)1864-1000 Fax (0)1864-1602 Telex 24653 steka ni STEENBERGEN HOLLANDDRAIN•i- Spare parts Type L 90 SUPER Serial DS68 Prod. Year 1992 Chassis nr. HD2689 AND HD2690 Motor nr. Steenbergen Hollanddrain B.V. Rijksstraatweg 100 Postbus 7011 3286 ZG Klaaswaai Holland Tei. ; (0)1864 - 1000 Fax (0)1864 - 1602 Telex 24653 steka ni I 5®? STEENBERGEN- I HOLLANDDRAINSPARE PARTS BOOK MACHINETYPE : L 90 SUPER PRODUCTION YEAR: 1992 DESTINATION : ETHIOPIE CUSTOMER NUMBER: 118232 NAME : WATER RESOURCES DEVELOPMENT P.O. BOX 5673 ADDIS ABABA ETHIOPIA BWGRP DESCRIPTION PAGE 1 CHASSISNUMBER SERIALNUMBER DELIVERY DATE WEIGHT AUTHORITY : HD 2689 : DS68 : 4.12.1992 : 1.250 KG 0010 0070 CHASSIS 0331 WHEEL AXLE 0840 P.T.O. SHAFT 1400 REEL DRIVE 1410 SUCTION SYSTEM WATER PUMP 3000 1420 PRESS SYSTEM 3640 REEL 5040 HOSE ROLLER + WINCH TOOLS QTY COMPONENT 1 01.3.6204.00A03 1 G1805A01 1 105086.NOO7O5AO1 1 16.3.6012.00A02 1 29.3.0912.00A01 1 29.3.6007.00A03 1 29.3.6011.00A21 1 34.3.6005.00A01 1 34.3.6012.00A02 1 50.3.0002.00A09SPARE PARTS BOOK MACHINETYPE : L 90 SUPER PRODUCTION YEAR: 1992 DESTINATION : ETHIOPIE CUSTOMER NUMBER: 118232 PAGE 1 NAME : WATER RESOURCES DEVELOPMENT AUTHORITY P.O. BOX 5673 ADDIS ABABA ETHIOPIA CHASSISNUMBER SERIALNUMBER DELIVERY DATE WEIGHT : HD 2690 : DS68 : 4.12.1992 : 1.250 KG BWGRP 0010 0070 DESCRIPTION CHASSIS QTY 1 0331 WHEEL AXLE P.T.O. SHAFT 1 0840 1400 1410 1420 3000 3640 5040 REEL DRIVE 1 WATER PUMP 1 SUCTION SYSTEM 1 PRESS SYSTEM 1 REEL 1 HOSE ROLLER + WINCH 1 TOOLS 1 1 COMPONENT 01.3.6204.00A03 G1805A01 105086.N00705A01 16.3.6012.00A02 29.3.0912.00A01 29.3.6007.00A03 29.3.6011.00A21 34.3.6005.00A01 34.3.6012.00A02 50.3.0002.00A09holxamddrahv BGR. • 0010 NR. : 01.3.6204.00A03 16 19CHASSIS L STEENBEROEN hollanddratn BGR. : 00IO NR. : O1.3.62O4.OOAO3 ITEM QUANTITY PARTNUMBER description 500 1 01.3.6204.00 CHASSIS 14 1 01.2.6204.14 TOW BAR 3 1 1313.160060 HEXAGON BOLT 16 1 1313.120120 HEXAGON BOLT 17 1 0211.120 NUT WITH NYLON RING 19 1 19.2.4167.10 PIN 20 1 6987.040 LOCKING PIN 21 1 0211.160 NUT WITH NYLON RING 15 1 01.2.6206.15 22 1 19.2.4167.09 STAND PIN 23 1 6987.030 LOCKING PIN 26 8 1313.120040 HEXAGON BOLT 27 8 0011.120 HEXAGONAL NUT 28 8 6189.120 SPRING WASHER 29 4 1213.160040 HEXAGON SCREW 30 4 0011.160 31 HEXAGONAL NUT 4 6189.160 RING 32 1 P093 501 TENSION SPRING 1 YORK 5" 502 8 BENCH VICE 1213.100040 503 10 HEXAGON SCREW 6189.100 504 10 RING 0011.100 505 0,33 M HEXAGONAL NUT 3512.140 506 6 THREADED-ROD 0011.140 507 3 HEXAGONAL NUT 5389.140 508 0,125 M FLAT WASHER 5MM.X30MM. 509 1 PRESSURE SPRING 34.2.6010.02 510 2 1313.100100 PROTECTION CAP 511 1 34.2.6010.03 HEXAGON BOLT 512 2 1313.120060 HOSE HOLDER 513 2 SY25TF HEXAGON BOLT 514 4 5389.100 BEARING HOUSING 515 2 0011.120 FLAT WASHER 516 1 34.2.6013.01 HEXAGONAL NUT 517 2 6189.120 GUIDE ROLL SPRING WASHER501WHEEL AXLE A , STEENBERGEN / HOLLANDDRAIN BGR. : 0070 NR. : G18O5AO1 ITEM QUANTITY PARTNUMBER description 500 1 G18O5 AXLE 901 1 700201200602 AXLE 904 2 700302160603 HUB 905 10 650300123204 WHEEL BOLT 906 10 900002010009 WHEEL NUT 907 2 500300133104 CAP 909 2 9OOOC259OOO9 CASTELLATED NUT 910 2 900002600009 BEARING 911 2 900002620009 BEARING 912 2 650300133204 OIL SEAL 913 2 650300083204 OIL SEAL 915 4 700301460604 BRAKE LIHING 916 4‘ 700304060602 WHEEL CHOCK 917 4 700301510604 SPRING 918 1 700302230601 BRAKE ROD 919 1 700302230602 BRAKE ROD 920 2 700301520604 LEVER 921 2 700301800604 922 TOOTHED DISC 2 900002730009 923 WAVE WASHER SPRING 2 900002720009 NUT 924 2 700301500604 501 BRACKET 2 10X15 901 TYRE COMPL. 1 10X15 15” RIM 902 1 10X15BUB 903 OUTER COVER 1 10X15519 INNER TUBE*P.T.O.SHAFT BGR. : 0331 NR. : 105086.NOO7O5AO1 ITEM QUANTITY PARTNUMBER DESCRIPTION 500 1 105086.N00705600 UNIVERSAL DRIVE SHAFT 901 1 920.505.050.351 FORK 1 3/8" 902 2 41205 UNIVERSAL JOINT 903 1 204.056.860 FORK 904 1 204.056.861 FORK 905 1 920.212.056.451 FORK 906 1 920.125.103.000 PROFILE PIPE 907 1 920.125.093.000 PROFILE PIPE 908 1 920.005.N05.086 PROTECTION PIPE CPT.ZOVOO ZL09 £ 91 ; HN O’rSO '■ HD0 *■ *REEL DRIVE steenbergen hollanddrain NR. : 16.3.6012.00A02 ITEM QUANTITY PARTNUMBER DESCRIPTION 1 1 16.2.6012.01 TENSION DEVICE 2 1 491.350 ROLLER 2 1 16.2.6012.02 CONNECTION SUPPORT 3 1 16.2.6010.02 DRIVE SHAFT 8 1 16.2.0824.16 V-BELT BRACKET 9 1 15.2.0109.03 SPROCKET WHEEL 10 1 29.2.1201.31 V-BELT PULLEY 11 1 29.2.1201.41 V-BELT PULLEY 12 1 16.2.6012.03 RUBBER RING 13 1 845 V-BELT 14 1,85 M 180538 ROLLER CHAIN 15 1 130538.9 CHAIN-CONNECT LINK 16 1 180538.12 REDUCING LINK 17 2 SY25TF 18 BEARING HOUSING 2 7688.0807050 KEY 19 4 2716.080025 20 HEX.SOCKET SET SCREW 2 1213.100040 25 4 HEXAGON SCREW 1213.100035 26 4 HEXAGON SCREW 5389.100 27 4 FLAT WASHER 6189.100 29 2 RING 0011.120 30 1 HEXAGONAL NUT 1313.120055 31 2 HEXAGON BOLT 1313.160060 35 4 HEXAGON BOLT 0011.100 HEXAGONAL NUTST» BGR. : 1400 (PAGE 1) NP ?9 3.091? 00A01 502 912507WATER PUMP f ,-JBVs STEENBBRGEN / I HOLLACTDRAIN I 8GR. : UOO NR. : 29.3 - 0912.OOAO1 ITEM QUANTITY PARTNUMBER DESCRIPTION 500 1 29.3.0912.00 high PRESSURE PUMP 901 1 9.600.005 CRANK CASE 902 1 9.544.050 GA SI ET 903 1 9.602.003 CRANK CASE COVER 904 20 1213.030030 HEXAGON SCREW 905 1 9.607.506 CRANK 906 2 9.542.055 CYLINDRICAL BEARING 907 1 9.602.406 BEARING HOUSING 908 2 9.544.176 GASKET 909 1 9.602.412 BEARING HOUSING 910 1 20X40X10 OIL SEAL 911 8 1213.100030 HEXAGON SCREW 912 1 1213.120040 HEXAGON SCREW 913 1 0011.120 HEXAGONAL NUT 914 1 9.622.602 DRIVESHAFT 915 2 9.542.042 CYLINDRICAL BEARING 916 2 9.602.203 COVER PLATE 917 2 40X65X12 OIL SEAL 918 8 1213.080025 HEXAGON SCREW 919 3 9.605.002 THRUST ROD COMPL. 920 6 9.538.087 STUD 921 6 9.540.512 SAFETY RING 922 6 9.539.050 NUT 923 3 9.622.402 PISTON PIN 924 3 9.556.030 SPIROL PIN 925 3 9.610.007 PISTON ROD COMPL. 926 6 9.623.206 SPACER 927 3 9.604.069 BUSH HOLDER 928 6 9.549.082 SEAL 929 3 9.539.516RVS NUT 930 2 9.538.233 STUD 931 6 9.538.240 STUD 932 3 9.544.110 GASKET 933 3 9.602.602 934 3 OIL SEAL HOUSE 30X47X10 OIL SEAL 935 3 7286.047 CIRCLIP 936 3 9.611.072 CYLINDER 937 6 9.546.234 O-RING 938 1 9.601.006.100 VAuVE HOUSING 939 8 9.538.150 STUD 940 2 9.544.608 GASKET 941 1 9.602.212 END PLATE 942 6 9.612.007 VALVE SEAT 943 6 9.558.990 BAuL 944 3 0R54.5X3 O-RING 945 3 9.6O2.8O9RVS COVER 946 2 9.6O2.81ORVS 947 1 9.6O2.8O3RVS CIlINDER cover CIL1NDER COVER 948 2 9.606.010 TOGGLE 949 1 9.606.012 TOGGLEWATER PUMP 8TEENBERGEN HOLLANDDRAIN : 1400 : 29.3.0912.00A01 ITEM 950 951 952 953 954 955 956 957 958 501 502 503 504 505 506 507 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 508 509 QUANTITY 1 1 2 6 3 14 1 14 2 1 1 4 4 4 4 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 4 1 1 1 4 4 1 1 1 1 1 PARTNUMBER DESCRIPTION 9.555.534 9.552.548 9.552.568 9.538.159 FILLING CAP DRAIN PLUG 9.606.007 PLUG STUD TOGGLE 0010.200 9.552.044 HEXAGONAL NUT 0011.160 9.544.121 OIL GAUGE GLAS HEXAGONAL NUT e2.09.00 34.2.6010.05 GASKET PROTECTION CAP 1313.16006S 0011.160 5389.160 6189.160 PROTECTION CAP HEXAGON BOLT HEXAGONAL NUT FLAT WASHER 158OR.RVS 9.621.612 RING PRESSURE REGULATOR 9.546.229 9.549.031 PRESSURE PLATE 9.611.022 9.616.010 9.549.039 9.546.218 9.612.006 O-RING SEAL CYLINDER PIN SEAL O-RING 9.558.989 VALVE SEAT 9.545.518 9.602.811 BALL PRESSURE SPRING 9.546.126 PLUG 9.545.060 O-RING 9.616.508 PRESSURE SPRING 9.537.107 HEXAGONAL NUT 9.558.801 HEXAGON SCREW 9.614.020 9.608.007 9.540.510 9.535.232 GREASE RING CASING RING STUD NIPPLE 0F PRESS.REG. 9.617.007 9.620.515 9.551.547 92.25.25 securing SHAFTING circlip NUT COLLAR 26.2.1367.02 Elbow pipeSUCTION SYSTEM steenbergen HOLLANDDRAIN J T 1410 : 29.3.6007.00A03 ITEM 1 2 3 4 5 6 7 8 9 10 QUANTITY PARTNUMBER DESCRIPTION 1 80305 hose nipple 1 80208 COUPLING 1 29.2.6007.01 SUCTION PIPE 1 80198 COUPLING 1 29.2.6007.02 HOSE CONNECTION 2 SLK.77.95 HOSE CLIP 10 M ZS.GR.3" HOSE 1 8343V ELBOW 2 SLK.32.44 HOSE CLIP 1 FIG.1870 3/8” NEEDLE VALVE 11 12 13 14 15 16 17 18 19 20 1 R209.13.10 NIPPLE 1 R2O1.13 SOCKET 2 N142.13 HOSE NIPPLE 4. SLK.15.24 HOSE CLIP 0,5 M VINYLPLUS 12/13 HOSE 1 29.3.0908.00 AIR RESERVOIR 0,3 M OBS.1”72 1 OILRESISTANT HOSE 80092 1 THREAD REDUCTION RING 29.3.0918.00 1 SUCTION BASKET 80094 21 22 901 1 THREAD REDUCTION RING 80085 1 THREAD REDUCTION RING 3.10.40.00 1 COUPLING 3.65.00.00 0-R1NGn I I L STKIKBBBGEN HOLXAJNTDDRAITi BGR. : U10 ______________________ NR, 79 3,6007 00A03 19BGR. : 1420 (PAGE 1) NR 29 3 6011 00A06/A21 ; BGR.3000IjA HTWIMBKBGKN / f HOLLAJTDDHAJJg / BGR. ■■ U20 (PAGE 2) ________ R 29 3.6011 00A06/A21 N: 19 IPRESS SYSTEM 8TEBNBERGEN / HOLLANDDRAXN / BGR. : 1420 NR. : 29.3.6O11.OOA21 ITEM QUANTITY PARTNUMBER description 1 1 80040 t-connection 2 1 80205 COUPLING 3 4 80305 hose nipple 4 2 29.2.0806.05 hose coupling ring 5 0,45 M SAE100R1.1" HP HOSE 6 1 PP45H BONDED SEAL 7 1 29.2.0799.01 CLAMP FOR TURN.HEAD 3 2 1313.100100 HEXAGON BOLT 4 2 6189.100 RING 5 2 0011.100 HEXAGONAL NUT 8 1 FIG.1870 1/4” NEEDLE VALVE 9 1 26.2.1367.03 DELIVERY PIPE 10 1 736.163.031.000 PRESSURE GAUGE 11 1 SLK.32.44 HOSE CLIP 12 1 R131U.19 COUPLING 13 1 N142.19 HOSE NIPPLE 14 1 29.2.O8O6.O2 HOSE COUPLING RING 15 20 M SAE100R1.3/4” HP HOSE 16 1 29.2.0814.01 CROSS PIECE 17 2 400914 BALL COCK 18 0,75 M 0BS.l”72 OILRESISTANT HOSE 19 1 29.3.0904.00 TURNABLE HEAD 1 1 29.2.0904.01 CASING OF TURNABLE HEAD 3 1 29.2.0800.03 RING 4 2 29.2.O9O4.O4 5 PRESSURE RING 2 29.2.O8OO.O5 6 SHAFTING COLLAR 1 29.2.0800.06 7 LOCKING PIN 1 29.2.0800.07 8 2 HITCH PIN N4O.5 9 2 SEAL 7286.065 10 CIRCLIP 2 1222.080020 11 2 HEXAGON SCREW 9873.032.1 20 3 80165 GREASE NIPPLE 25 1 nipple 29.2.0806.02 26 1 29.2.0816.14 HOSE COUPLING RING 27 4 29.2.0806.11 HOSE COUPLING' 28 380 M 508.12 HOSE COUPLING RING 29 1 HOSE 29.2.0816.15 30 2 29.2.C3O6.O1 HOSE COUPLING 31 20 M WS.16MM.HD30.T HOSE COUPLING RING 32 1 WATER HOSE 29.2.0818.01 33 1 29.2.0804.01 HOSE COUPLING EXTRUSION HEAD •STEEMBERGEM HOLLANDDRAIN BGR. : 3000 NR. : 34.3 6005.00A01REEL / J^STEEMBEHGKN ^9? HOLLANDDRATN / / BGR. : 3000 NR. : 34.3.6005.00A01 ITEM 500 501 502 503 504 505 QUANTITY PARTNUMBER DESCRIPTION 1 2 34.3.6OO5.OO REEL SY55TF BEARING BLOCK 4 4 1313.160130 HEXAGON BOLT 4 5389.160 ELAT WASHER 6189.160 4 RING 0011.160 HEXAGONAL NUTBGR. • 3640 NR ; 34,3.6012 00A02 L 90 SUPERHOSE ROLLER+WINCH L STEENBERGEN hollajtddrain BGR. : 3640 NR. : 34.3.6012.00 AO 2 ITEM 1 2 3 4 5 6 7 8 9 10 11 12 quantity partnumber 1 1 1 1 1 1 1 2 34.2.6009.06 34.2.6009.04 34.2.6009.05 34.2.0035.05 34.2.O835.O6 34.2.0835.10 34.2.6O12.O7 SY25TF 1213.120035 6189.120 0011.120 X 3,3 M 6X36X8 TWK. 13 14 15 16 17 18 19 20 DESCRIPTION WINCH HINGE LOCKING PAWL ARM ADJUSTING BOLT FORK+GUIDE ROLLER ROD BEARING HOUSING HEXAGON SCREW SPRING WASHER HEXAGONAL NUT STEEL WIRE GALVANIZED PROF.KOUS 8MM. GUIDE LOOP 4 KLEM 5/16" WIRE CLAMP 4 1313.100080 HEXAGON BOLT 4 5389.100 FLAT WASHER 4 6189.100 RING 4 0011.100 HEXAGONAL NUT 1 1313.160120 HEXAGON BOLT 2 0011.160 HEXAGONAL NUT CM CM CM CM CMBGR. • 5040 NR. : S0.3.0002.00A09 1 (CPT.Jtools L STEENBEEGEN HOLLANDDRAIN 7 ITEM quantity partnumeer 1 3 4 5 6 7 8 9 1 11 4 13 1 14 1 1 4 1 1 1 1 1 10 1 11 1 12 1 13 1 14 15 1 1 SE 33.2.0814.00 1349.191064 0042.127 1350.127076 115.20.05.001 3806.24T. 301.10.11.013 600.10 600.13 600.17 600.19 600.24 304.10.89.007 303.90.10.011 303.90.10.005 2100.7R 585010024 BGR. : 5040 NR. : 50.3.0002.OOA09 DESCRIPTION HOSE PINCING DEVICE HEXAGON BOLT HEXAGONAL NUT HEXAGON BOLT SAW FRAME SAW BLADE BENCH HAMMER OPEN ENDED-RING SPANNER OPEN ENDED-RING SPANNER OPEN ENDED-RING SPANNER OPEN ENDED-RING SPANNER OPEN ENDED-RING SPANNER ADJUSTABLE PLIERS ADJUSTABLE WRENCH 15” ADJUSTABLE WRENCH 8” ALLEN KEY PIPE PLIERSgV, STEENBERGEN HOLLANDDRAIN kef: L-90 Super TECHNICAL ITEMIZED DESCRIPTION OF THE DRAINCLEANING MACHINE TYPE L-90 SuperSTEENBERGEN / HOLLANDDRAIN / L-90 Super Draincleaning machine in salty water resistant execution: For circumstances where drain cleaning has to be performed with salty water and where it might be expected that no fresh water will be available for cleaning of the pump system a Tier system after operation with salty water, J . -i_____ - —. — 1 -* m ■» r>/-i ,/hinoc i Steenbergen insists on providing the pumpsystem of its draincleaning mac ]n salty water resistant execution. The salty water resistant execution of the pumpsystem mainly consists of: - Suction strainer in synthetic material - Nipples to suction hose in stainless steel execution - Suction pipe to pump in stainless steel execution - suction chamber to pump in stainless steel execution - Pump valve case in special coated execution - Ball valves and seatings in stainless steel execution - Pressure relief valve in stainless steel execution - Pressure limitation valve in stainless steel execution - Bypass line valve in stainless steel execution - Nipple and pipings on pressure side in stainless steel execution - Turnable coupling to hosereel in special seawaterresistant bronze execution - Central pipe in hosereel in stainless steel execution All technical data are subject to modification without prior notice. STEENBERGEN HOLLANDDRAIN B.V.steenbergen / HOLLA NDDRAIN I L 90 Super Group 4: REEL WITH FLUSHING HOSE Flushing hose : The flushing hose, cons isting of a special selected material type, which copes with Jet Head and provided with rearwards directed holes for generating the reaction power for Reel drive Group 5: CLAMPING DEVICE the pump's pulsation, is composed of a first part of hose with *eel reinforcement, a second composed part or hose without steel reinforcement and a final part of 5/8" hose. The composing parts of the flushing hose are interconnected by means of hose clamps with special copper rings for tightening. Connected to the end of the flushing hose penetration of the hose into the drain and one forward directed hole for spouting away of the dirt in the drain pipe. The jet head assy is exchangeable for different diameters of drainpipe. While penetrating into the drainpipe, the flushing hose is pulled from the reel (and consequently the reel rotates) by the pulling force created by the jethead. A, by handlever in/out shiftable, driving mechanism, drives the reel when winding up the hose, via a V-belt pulley mechanism and a chain transmission, from the pump shaft. A device for clamping the copper rings of the hose clamps is delivered with the machine. The device consists of a split circular steel frame, which can be opened in order to locate the hose with the clamp 22 i1hS Aenteir‘ After.th«. frame is closed around the clamp, it is tightened by means \ CJ' ew in9 thightening bolts with their press-blocks - 'uin,?n re?u1ar sequence the 4 Vice Connected to the machine's chassis operating the clamping device. forL 90 Super Pulsation Pressure line Quick relief valve Pressure limitation valve Average working pressure Pressure gauge Coupling to reel Reel STEENBERGEN i hollanddrain The suction hose is about 10 m. long at 1,5" diameter. Incorporated in the suction line on the machine, an airchamber, ensuring a most constant suction flow. The suction hose is coiled-up for transport on a coil-holder. A bypass line from the suction line to the pressure side of the first cylinder is fitted. A pulsation on the pressure side of the pump is created via this bypass line. The bypass line can be closed by means of a built-in valve. The pressure line is composed of steel tubing and rubber hose and connects the pump's pressure side to the reel, holding the flushing hose. Incorporated in the pressure line, a hand lever operated quick relief valve for immediate relief of pressure, for safety reasons. This valve is also used during starting up. Incorporated in the pressure line, the adjustable springloaded pressure limitation valve, which can be set at every required pressure up to the maximum of 80 Bar. The average working pressure is 45 up to 65 kg/cm’ A pressure gauge is built-in for controlling the discharge pressure of the pump. The gauge can be shut off from the pressure line by means of a valve in order to avoid unnecessary wear of the gauqe due to pulsation. The pump pressure line is connected to the rotating reel with the flushing hose via a watertight-sealed, turnable coupling. The reel consists of a heavy constructed steel sheet drum, which is supported with its axle by 2 reel supports. A suncover is mounted over the reel to protect the hose from direct radiation.I Si STEENBERGEN I tP? HOLLANDDRAIN L-90 Super Group I: PUMP DRIVE SYSTEM Group 2: CHASSIS Wheels and axle Drawbar Hose guidance device Group 3: PUMPSYSTEM Pump A standard cardan shaft, delivered with the machine, drives the pump drivingshaft from the standarized P.T.O. of a tractor at 540 r.p.m. The machine's chassis consists of a welded steel structure in Heavy Duty execution. One heavy and sturdy type of axle is connected to the lower side of the chassis. On each end of the axle a wheel with a rubber pneumatic tyre of size 10.00 x 15. Suitable to connect the machine to every type of suitable tractor or jeep equipped with towing eye. In vertical sense turnable con-nected to the machine's chassis is the holder pipe wherein the guidance-roller-carrying pipe can be shifted up or down. The carrying pipe holds on its topend the hose guidance roller. The carrying pipe can be fixed in required position by mean of a fixation screw. The holder pipe is kept in vertical position by 2 steelwires which are connected to the 2 side arms on the holder pipe. The 2 steelwires are on the chassis side wound around an axle, carried on a support frame on the machine's chassis. The axle is turned around by a hand lever and in position secured by a ratchet gear. A 3 cylinder, se 1 f-prim1ng , positive displacement pistonpump • delivering 150 1/min at a max. discharqe pressure of 80 bar. The pump shall be driven at 540 r.p.m. max. at the tractor P.T.O. The suction line of the pump consists of a steel pipe to which the suction hose is fitted. The flexible suction hose 1s at its end equipped with a strainer. ur Suction lineSTEENBERGEN HOLLANDDRAIN Rqksstraahveg WO PB. 70n Te' (O)186J - WOO 3286 ZG Klaaswaal Hollano Fax (0)1664 • 1602 OPERATION PREVENTION OF ACCIDENTS This machine is entirely safe when used properly. For safeguarding personnel read the instructions here below: - check rubber hoses and nipples for external damage. - the operator is held responsible for the safety of the individuals around the machine. - pay special attention to instructions for adjusting pressure relief valve. - check steel cable of hose-guidewheel for signs of damage and deterioration. - do not drive over machine's hoses with any vehicle, especially the suction hose which can be damaged by doing so. - machine can in general be operated by one person it is, however, advisable to have another person available for general assistance. - when connecting machine behind the tractor the hinge-pin should be secured firmly so that it cannot get loose during transport. The working principle of the machine The cleaning action of the machine is achieved by the water jets leaving the jet head at the end of the high-pressure hose. The forward directed jet, leaving from the front hole, spouts away any obstacles which might prevent entering of the jet-head further into the drain pipe. The 3 backward directed jets, leaving from the rear holes, spout away the dirt to the outfall-end of the drain. These 3 jets do an very good cleaning job when the hose is pulled back to the the entrance, because they are acting then like a broom sweeping out all the dirt which is left. The forward pull causing the penetration of the jet head and the hose into the drain pipe is created by the reaction force of the 3 high velocity water-jets leaving the jet-head at the rear. The pulling force is sufficient to pull the hose into the drain and to unwind it automatically from the hose drum. The well-balanced composition of purp, drum mechanism, hose and jet head tf the HCLLAKITFAIK L90 Super mikvS it pcssible tc clean dram ;ipe length up to 500 r-STEENBERGEN Rijkssiraatweg 100 _ 4?? HOLLANDDRAIN "el (0)i66J - 1000 3286ZG Klaaswaai Holland Fax (0)1864 - 1602 IMF OaTANT Pulling cut of the hose from the drain pipe is done by driving the hcse-drum from the cardan shaft via the pump's gear-case. A coupling in the drive line to the hose drum is engaged when the hose is pulled out and disengaged when the hose pulls itself into the drain. The 3-cylinder high-pressure pump is self priming. Although the suction hose is 10 metres long, it is advisable to use the minimum possible suction height in order to obtain the maximum pump efficiency. The components parts of the complete cleaning hose are of materials, length and diameters, which have been carefully selected by the manufacturer to achieve the optimal performance of the machine. The use of other types of hoses, diameters and or length may cause incorrect working of the machine. When to clean the machine. The efficiency of the l-90 Super operation in drains immediately after substantial rain. The cleaning of composite drainage systems. ls improved by its For cleaning composite systems consisting of a collector drain with laterals, the following working sequence should be adopted: a. start with cleaning the collector drain. b. the cleaning of the lateral drains must be started from the highest installed one. In order to clean the laterals, procede as follows: 1. dig out the connection 2. take out the first 3 or 4 drain tubes in order to make room for penetration of the hose (if possible) . 3. feed-in the hose in a slight curve so that it does not touch the rim of the drain tube and smoothly seeks its way into the drain. A plastic drain pipe must be dug-out far enough for a smooth penetration of the cleaning hose. c. clean the collector dram again after cleaning of the laterals. Remark It will generally be the case that at the beginning of a lateral, no direct water supply to the machine will be available. Vater must therefore be supplied to the machine from acontainer crrom the open drain to which the collector runs, by means of a small motor p»p sucking Iro, that drain .»« a long-d.Hv.ry hose to th. cleaning machine./ '-^VSTEENBERGEN I HOLLANDDRAIN Rijksstraaiweg 100 PB 7011 Tei (0)1664 • WOO Cleaning nf . 3286 ZG Kiaaswaai Holland Pax (0)186-^ • 1602 ---------- !13 £l - ^^ns ^lrectly_runnj g off n lnto an open drain -• put the machine with its towing tractor on the ditch bank opposite the drain pipe outlet m such a way that the hose can easily run-off the drum's lower end into the drain pipe. Leading-in of the hose in this way prevents it from touching the pipe-end to ensure a smooth running-off or on of the hose over the entire drum-width. 2. The reverse roller can be used in case the machine cannot be positioned on the bank opposite the drain (see Fig.l). Position the machine over the drainpipe cutlet in such a way that the hose runs off from the drum low side. Guide the hose over the reverse roller into the drain pipe. Lower the reverse roller far enough into the ditch so that the hose, runnning off the roller can move in a straight line into the drain pipe. The working principle with reel, (see fig.l) 1. Put the machine on the ditch bank where the drain pippe outlet end is. The drain pipe cutlet should be on the lefthand side of the machine. Lower the reverse roller far enough into the ditch so that the hose running off the roller can move in a straight line into the drain pipe. 2. Put the suction hose with an extra strainer box, into the water of the ditch (the basket may be wrapped with a jute sack). 3. Remove the concrete cutfall pipes or protect the hose from wear on the edges of the pipe. 4. Check the tightness of the jet head on the high-pressure hose. 5. Insert the hose with jet head by hand about 1 metre into the drain pipe (ensure rolling-off of the hose from the bottom of the hose drum). 6. Start the engine and run the pump at low speed. Open the valve on the pressure side so that and the water runs-off from the bottom of the valve . This must be done to pump the air out of the system. 7. Open the valve fitted on the first cylinder (this valve should always be in open position during pulling of the cleaning hose).I «■ tai ■ ta at a a K I I.STEENBERGEN HOLLANDDRAIN / Rijksslraahveg 100 PB 7011 Tei. (0)166- - ’.000 S. c • i ru , 3286 ZG Klaaswaal Holland Fax (0) 1664 - l602 • .he / . ail e c ,ldfel. th6 frfcssure-gauge. 9. How close the relief valve by pulling lever upwards. The pressure will now build up in the pressure line. 10. Increase the engine speed until pressure gauge on the pump indicates a pressure of 65 up to 80 kg/cm. Close the pressure gauge valve for protection of the gauge. During normal operation check the delivery pressure twice per day. 11. During the first fifty metres of penetration, the cleaning hose will tend, due to low friction, to run too fast into the pipe, therefore decrease the speed of penetration by decreasing the engine-speed. Damaged drain systems The cleaning hose pulls itself into the drain pipe with a speed of 2-10 centimetres per pressure-pulse. This speed depends on the gradient of the drain pipe. If the drain is interrupted (broken) the jet head will leave the drain pipe and penetrate into the surrounding soil, and a considerable amount of cleaning water will be injected into the soil. This will be indicated by a decrease in the amount of cleaning water running out of the drain pipe and from the fact that cleaning water suddenly carries a lot more dirt. The place where the jet head has left the drain pipe may be deduced after marking the hose. If the jet head left the drain pipe in an upward direction, it will appear. The surface of the field and the place of breakage of the drain pipe is easily located and the hose could be recovered. If the jethead left the drain pipe to either side or downwards it will be almost impossible to recover the hose. The jet head will stop at the end of the drain. Pulling out the hose and rewinding it onto—the reel 1. Decrease the engine speed to half speed. 2. Close the valve on the first cylinder. 3 Move the engaging lever of the reel drive system to the right so that the V-belt drive is engaged and the hose reel starts to turn Pulling-out of the hose is to be done at moderate speed in order to achieve the highest benefit of the secondary (broom) cleaning action of the jet head which allows for optimal cleaning of the drain pipe. a TaI-p care the hose is rewound properly onto the reel. Cross 4. Take c vinaing of th hos mig) m Qht lead to disconnecting cf the hose- i fce _ outZ ^-gV, STEENBERGEN <^r HOLLANDDRAIN RijksstraaHveg WO PB 701l Tel (0)1664 • WOO 3286 ZG Kiaasv.aai Holland Fax (0)1864 - 1602 hcse from dangerous swinging. The hose shall always be wound onto the reel, filled with water. 5. Vhen the jet head is about to leave the drainpipe the relief valve should be operated by hand in order to relieve the water pressure immediately when the jet head leaves the drainpipe. Open the valve on the first cylinder again before closing the relief valve and increasing the engine's speed. 6. It is advisable to clamp the drain cleaning nozzle in the benche vice of the machine. MAINTENANCE Preventive maintenance The pump's crank case is filled with 13 litres lubrication oil, type Spirax HD 90. The oil must be changed every 1000 operation-hours or every 6 months (whatever comes first). The oil is drained-off through the drainplug (Item 951-Group 1400.) Regularly check the air pressure of the tyres, which should be 3 Atm. Bearing and the spiders of the cardan shaft shall, be greased every week during regular operation. Hose repair with the aid of the hose clamp device - Using a hack saw, cut the damaged part out of the hose. - Slide the hose clamps onto the hose ends. - Position the hose ends over the connector pipe. - Put the complete assembly in the clamp device. Pay attention that the proper size of clamp elements are used, i.e. for the 1" - 3/4” - and 5/8” hose and that the elements are properly placed in numbered sequence in the device. - Position the clamp rings properly over the hose ends and tighten the clamp elements again. Repeat this over the total hose circumference and in the same way for the other rings. - Open the clamp device and remove the hose./ ; STEENBERGEN 45? HOLLANDDRAIN Rilkssnaaiweg 100 PB 70n Tei (0)166-2 - "000 3266 ZG Kiaasv.aai Holland Fax (0)166-2 - 1602 STORAGE Long storage of the machine or frost prevention - Store the machine, when possible, frost free. - If frost free storage is not possible, drain the pump's cylinderbody via the two drain plugs item 952,group 1400. - Remove the 3 pump valve-covers and lift the ball valves (943) from the seats in order to release the water from the cylinders. - Take off the hose at the reel connection item 13, group 1420 and blow the water, out of the cleaning hose using copressed air. If no compressed air is available, drain the hose in another way. - Grease the ball valves of the pump and its seatings when extended storage is expected. - The machine should be properly protected from sunrays whenever it is stored for extended periods in tropical climate conditions. Strong sunlight might atack the hose, dry it out, and make it useless.DITCHfl fl fl fl fl ■ i N fl fl fl fl fl fl fl fl fl fl J J 3T3ENBEHGEN *orkng auth reverse roll from s.iae site of the ditch. * e r e dram-end located FIG.1 IsT [/■® « o^S^I ' .....' DRAINAGE GLEANING HOSE GUIDER USE HOSE GUIDER to prevent hose damage on sharp edges ! COST SAVING BY - INCREASE LIFETIME HOSE • FASTER OPERATION • LESS WATER NEEDED HOSE GUIDER r Damage hose NO DAMAGE HOSESpare parts I I Type I Serial .WI. 600Q. WT4 I I Prod, Year J992 Chassis nr. HD2700 I Motor nr. I I I I I I I I ! Steenbergen Hollanddrain B.V. Rijksstraatweg 100 Tel (0)186* ' Fax (0)1864-1602 STEENBERGEN HOLLANDDRAIN Postbus 7011 3286 ZG Klaaswaal Hollano Telex 24653 stexa niWZATERTRAILER <V«e, STKBNBBBOB1V / HOLLAKDDHAnr / TYPE WT6000 2980 1410 331 10 70SPARE PARTS BOOK PAGE 1 MACHINETYPE : WT 6000 CHASSISNUMBER PRODUCTION YEAR: 1992 SERIALNUMBER DESTINATION : ETHIOPIE DELIVERY DATE CUSTOMER NUMBER: 118232 WEIGHT : HD 2700 • WT4 : 4.12.1992 : 2.855 KG NAME : WATER RESOURCES DEVELOPMENT AUTHORITY P.O. BOX 5673 ADDIS ABABA ETHIOPIA BWGRP 0010 DESCRIPTION CHASSIS QTY 1 0070 WHEEL AXLE 1 0331 P.T.O. SHAFT 1 1410 2980 3920 SUCTION SYSTEM 1 WATER TANK 1 AIR PUMP 4270 1 PARKING BRAKE 1 COMPONENT 01.3.5339.00A01 46.3.2451.00A01 W2100.1010MM.A01 29.3.0919.00A01 27.3.5213.00A01 MEC.5AO1 31.3.5414.00A01—a 8TEENBBHOBN HOLLANDDRAIN BGR. ■ 0010 NR. : 01 3.5339 00A01CHASSIS STEENBEHGEN hollanddrain 0010 01.3.5339.00A01 ITEM QUANTITY PARTNUMBER DESCRIPTION 1 1 1 1 6 6 01.3.5339.00 01.2.5339.01 01.2.5339.02 01.2.5339.03 1212.200050 0010.200 CHASSIS CHASSIS TOW BAR SUPPORT WHEEL HEXAGON SCREW HEXAGONAL NUT 6 6189.200 SPRING WASHERa a a a a < a a STEENBEHGEN HOLLANDDRAIN BGR. ; 0070 NR. : 46.3.2451.00A01 904 901 902 903 1 j iWHEEL AXLE /STEENBERGEN / HOLLA.NDDRAIN BGR. : 0070 NR. : 46.3.2451.00A01 ITEM 1 2 3 901 902 903 904 QUANTITY 1 4 4 4 4 4 8 PARTNUMBER 89601112 83002150 58100399 83000001 83000002 83000003 83000004 DESCRIPTION TANDEM AXLE WHEEL RIM TYRE TAPER ROLLER BEARING TAPER ROLLER BEARING OIL SEAL BRAKE LININGSTEENBEBGKN hollanddhain BGR. : 0331 NR. : W2100 1010MM.A01P.T.O.SHAFT BGR. : 0331 NR. : W2100.1010MM.A01 ITEM 500 901 902 903 904 905 906 907 908 QUANTITY 1 2 2 1 1 0,85 M 0,85 M 1 1 PARTNUMBER W2100.1010MM. 10.10.00 10.01.00 10.48.00 10.49.00 75.06.00 75.12.00 SCO5.75O.BU. SCO5.75O.BI. DESCRIPTION CARDAN SHAFT SINGLE JOINT UNIVERSAL JOINT FORK FORK PROF IL OOA PROF IL OA PROTECTION PIPE HALF PROTECTION PIPE HALFL 8TEEMBERGEN HOLLANDDRAIN 7 BGR. : 1410 NR. : 29.3.0919.00A01SUCTION SYSTEM I STEENBERGEN [ HOLLA1WDRAJK BGR. : 1410 NR. : 29.3.O919.OOAO1 ITEM 1 2 3 4 5 6 7 901 902 QUANTITY 2 PARTNUMBER 6.10.40.00 DESCRIPTION HOSE CONNECTION 4 2 162/174 6.00.05.04 HOSE CLIP 1 1 6.20.40.00 279647 HOSE HOSE CONNECTION SUCTION BASKET 12,5 M 1 DIAM.6MM. DSL.6MM. NYLON CORD 1 SE 1 6.15.00.00 6.65.00.00 D-CLOSING BRACKET O-RING SET WITH RIVETS8TKENBEHGEN HOLLAKDDRAIN BGR. : 2980 ______ ____ _______ _________________________________ NR ; ?7 3.5213.00A01 910 914=INC 929 925 915=INC 930WATER TANK STEENBEROEN ' hollanbdrain BGR. : 2980 NR. : 27.3.5213.OOAO1 ITEM QUANTITY 1 1 901 8 902 8 903 904 l l 905 3 906 3 907 l 908 1 909 910 911 912 913 914 915 916 l l i l l i l l 917 2 918 919 920 921 922 923 924 l l l i l i i 925 2 926 2 927 3 928 3 929 930 l i PARTNUMBER 6000L. 27.2.5213.01 27.2.5213.02 27.2.5213.03 27.2.5213.04 27.2.5213.05 27.2.5213.06 27.2.5213.07 27.2.5213.08 27.2.5213.09 27.2.5213.10 27.2.5213.11 27.2.5213.12 27.2.5213.13 27.2.5213.14 27.2.5213.15 LKM.l 1/2" 6.OO.OO.72 6.03.05.00 6.01.05.00 6.04.05.00 6.06.05.00 6.09.05.72 6.05.05.72 6.02.05.72 6.08.05.00 6.89.00.00 O.2O.OO.4O 0.20.05.40 6.65.00.00 3.65.00.00 DESCRIPTION TANK HOOKBOLT NUT SEALING COVER CLAMPING STRIP HOSE BRACKET RUBBER PLATE SAFETY SAFETY BALL HOSE VACUUM PRESSURE GAUGE MOISTURE RESERVOIR HOSE COUPLING PIECE COUPLING PIECE BALL COCK VALVE COCK FORK ROD NUT RING UPPER CAP CASING SLIDE O-RING CONTROL SET GAUGE GLASS GLASS O-RING O-RINGZ /W E E ; e n huLLAjmuuh-AIN BGR 3920 NR, : MEC5A01 26 25 2 24 23 43 29 28AIR PUMP BGR. : 3920 NR. : MEC.5A01 ITEM QUANTITY PARTNUMBER DESCRIPTION 1 1 AM.l ROTOR HOUSING 2 1 AM. 2 GEAR WHEEL CASE 3 1 AM. 3 COVER 4 2 AM.4 GASKET 5 1 AM. 5 ROTOR 6 1 M/AM.6 KEY 7 7 PALETTA MEC.5 PUMP VANE 8 1 M/AM.8 HOSE PILLAR 9 1 M/AM.9 HEX.SOCKET SET SCREW 10 1 AM. 10 OIL DIPSTICK 12 3 6307.2RS1 BEARING 13 1 M/AM.13 GASKET 14 1 M/AM.14 FLANGE 15 1 M/AM.15 GREASE NIPPLE 16 12 M/AM.16 BOLT 17 12 M/AM.17 RING 18 4 M/AM.18 RING 21 1 M/AM.21 PLUG 22 1 AM.22NW HANDLE 23 1 M/AM.23 PLUG 24 1 M/AM.24 RING 25 1 6304 BEARING 26 1 M/AM.26 GEAR WHEEL 55 T. 27 1 35X62X10SL OIL SEAL 28 1 M/AM.28 GASKET 29 1 M/AM.29 COVER 30 1 M/AM.30 OIL GAUGE GLASS 31 1 AM.31NW CONNECTION PIECE 32 1 AM. 32 NUT 33 1 M/AM.33 GEAR WHEEL 21 T. 34 14 M/AM.34 BOLT 35 14 M/AM.35 RING 36 1 AM. 36 EXHAUST 37 1 AM. 37 GASKET 38 1 AM. 38 COVER 39 1 AM. 39 GASKET 40 1 M/AM.40 RING 41 1 M/AM.41 BALL 42 1 AM. 42 GASKET 43 1 M/AM.43 PROTECTION CAP 44 1 M/AM.44 OILFLOW REGULATOR 45 1 AM. 45 PRESSURE SPRING 46 1 M/AM.46K. HOSE 47 1 AM.47NW CONNECTOR 48 1 M/AM.46L. HOSE 49 1 M/AM.49 HOSE 51 1 M/AM.51 COUPLING PIECE 52 3 M/AM.52 ANGLE HOSE PILlAR 99 1 M/AM.99 OIL PUMP CPL. 100 1 AM.100 GASKET SET 500 1 MEC.5 AIR PUMP CPL.< 4 8TBKNBXBOBN hollanddratn BGR. : 4270 NR. 31.3.5414.00A01 II M N I acm cn kj m ld PARKING BRAKE ITEM 1 QUANTITY 1 PARTNUMBER 884.600.618.270 BGR. : 4270 NR. : 31.3.5414.00A01 description PARKING BRAKE 3,25 M 6X19X8 TWK. WIRE CABLE 4 KLEM 5/16” WIRE CLAMP 2 PROF.KOUS 8MM. GUIDE LOOP 2 0SL.10MM. D-CLOSING 1 207007070000 CABLE REEL 901 2 O6O1.12O.O ADJUSTING SCREW'vgr STEENBERGEN HOLLANDDRAIN STEENBERGEN HOLLANDDRAIN Watertrailer : type WT 6000 The Steenbergen llollanddrain watertrailer consists of a heavy and welded steel constructure in heavy duty execution with swiveling tandem tyres, a galvanized tank and a PTO driven airpump. The machine is suitable to connect to every average class agricutural tractor with a 540 rpm PTO shaft. Recommendable is a tractor of about 50 HP because of the total weight of the machine in completely filled condition. About 8000 kilos. OPERATION: Prevention of accidents: This machine is entirely safe when used properly. For safeguarding personel read the instructions here below: Check regular the tyres, hoses, couplings and locks of rear "door", lenght and condition of PTO shaft, valves and the oil level of the airpump. The operator is held responsible for the safety of the individuals around or near the machine. Check regular the steel cables of the brake mechanism for signs of damage or deteriation. Do not drive over the machine hoses with any vehicle. The machine can in general be operated by one person, it is, however advisable to have another person available for general assistance. Special when this machine will be applied in combination with a Steenbergen Hollanddrain flushing machine. When the machine will be connected behind a agricultural tractor, the hinge pin should be secured firmly so that it cannot get loose during the transport. THE WORKING PRINCIPLE OF THE MACHINE: The watertrailer does have a capacity of 6000 liters. The watertrailer will be filled by wans of a airpump. The airpump will create a vacuum inside the watertank. When the inlet valve will be opened, the tank will fill itself by meant of pressure difference. By means of underpressure inside the tank en standard pressure on the waterlevel the tank will be filled. 1STEENBERGEN HOLLANDDRAIN The contens of the watertrailer will be made visible by level eyes on the front of the watertank (PTO side). For discharging the tank, it won't be necessary to use the airpump. The t m*khine can be conr>ected directly to the outlet of the watertrailer at the rear side of the machine. OPERATION: Filling of the tank: Be sure that the machine or combination has been put on the parking brake. Be sure that the lenght of the cardan shaft is correct. Connect the suction hose(s) to the side inlet of the tank and put the strainer in the waterreservoir. Connect the watertrailer PTO shaft to the 540 rpm PTO shaft of the tractor. Fix the outer cover of the PTO shaft. Start tractor engine and engage the PTO shaft at idle speed. Put the lever on the topside of the airpump on position ''suction” and open manual the inlet valve of the tank. Increase engine speed up to max. 500 rpm . Pay special attention to the grease system of the airpump during operation. On top of the pump is a oilflow regulator with check glass. The oil should drip and not flow constantly. Check the filling and level through the leveleyes. If the tank is filled (std. advisable up to 90% of the total capacity) shut manual the inlet valve and disengage the PTO shaft and decrease at the same time the engine speed. Disconnect the suction hose. When the suction hoses cannot be left at the reservoir, they can be laid on the suction hose carriers on the side of the watertrailer. But after filling the tank, the suction hose will stay filled with water, because of the non return valve in the strainer. Lift the non return valve of the strainer by means of the rope which is connected to a lever on the non return valve, and the water will flow away. When the suction hoses are empty they are much better to handle. Release parking brake. Machine is ready now for transportation to the work location. Be aware of the fact that a completely filled watertrailer does have a weight of about 8000 kilos. Discharging of watertrailer: When the trailer arrives at the workspot, the combination should be put on the parking brake again. For discharging or when the trailer will have a function of water reservoir, it won't be necessary to use the airpump. The suction hose can be connected to the rear outlet of the watertrailer by means of special adaptor. When the drainflushing machine is ready for operation, the outlet valve can be manualy opened, and the water flows to the drainflusher.STEENBERGEN HOLLA NDDRAIN Safety: The operation pressure of this machine is adjusted at 0,8 bar overpressure, and tne pressure relief valves are normally secured. But in case the water trailer will be used in combination with the flushing machines, the adjusted overpressure is not relevant. Changing the pressure regulator, or other items of the machine without permission of the manufacturer will automatically result in lapse of warranty or any reponsibi1ity to the manufacturer. Summary: This machine does have a very long lifetime if it will be used and serviced properly. It is recommendable to put the agricultural tractor ip line with the machine during using of the PTO shaft. Maintenance: The watertrailer is equipped with a double moisture reservoir, 1 on top of the tank and one in front of the tank. This reservoir on the front of the tank must be tapped after every 2 to 3 fillings. On the bottom of the reservoir there is a cock. When the water trailer is empty and put in line with the tractor, the airpump must be switched on position pressure, which normally never will be used. The tractor must be started and PTO must be enqaged to drive the pump, (rpm between 300 and 500 rpm). If it will be visible on the pressure meter that the pump build up a oressure of about 0,5 bar, the cock on the bottom must be opened and closed again, repeat this once or twice. Hereafter the PTO must be stopped and the airpump must be switched to the suction position again. For cleaning of the inside of the tank it is possible, when the tank is complete empty, to loosen the hook bolts of the rear cover, and to swing away the rearcover. When closing the tank again, be sure that the sealing strip is still in proper position. Every 10 operation hours: Check oillevel of pump. Oillevel must always be visible on the dipstick. If necessary refill with oil according the standard ISO VG 220. Oil level of the drive case must be checked, see oillevel eye on the side of the housing. Refill if necessary with oil acc. std. SAE 90 (cardan oil). Every 40 operation hours: Check wheel nuts and adjust if required. Check protection of PTO shaft and grease the joints and the profile tube of the shaft. Every year: H Exchanqe oil of drive case and pump. ._ . . Check wheel bearings and lining of the the brakes, and -If required adjust them, 3L STEENBERGEN HOLLANDDRAIN If there are questions, problems or any other information required, please apply to the SERVICE of: STEENBERGEN HOLLANDDRAIN B.V. P.O.BOX 7011 3286 ZG KLAASWAAL HOLLAND TEL. 01864-1000 FAX. 01864-1602 4 /RESER V EDT
🔊 Read Aloud
⏹ Stop
<
Summery
<
×
Summery