Emergency Ground Water Development Project (Akaki)
Contract No. I: Civil Works - Bill of Quantities
Project Overview
Client: Transitional Government of Ethiopia - Addis Ababa Water and Sewerage Authority (AAWSA)
Consultant: Water Supply and Sewerage Agency (WSSA) with sub-consultant Metaferia Consulting Engineers (MCE)
Date: December 1994
Project Components: Well field development, reservoirs, pump houses, transmission pipelines, and distribution systems
Project Components Summary
| Bill No. | Description | Pages |
|---|---|---|
| 11 | General Items | 2 |
| 12 | Well Field Area D: Collector & Transfer | 22 |
| 13 | Collecting Tank (CT) | 47 |
| 14 | Ground Water Site 1 (GW1) | 39 |
| 15 | Ground Water Site 2 (GW2) | 39 |
| 16 | Ground Water Site 3 (GW3) | 38 |
| 17 | Ground Water Site 4 (GW4) | 15 |
| 18 | Transmission Pipeline | 19 |
| 19 | Distribution System (S2) | 11 |
Key Project Elements
Well Field Area D (Bill No. 12)
- Access road construction (63,120 mĀ² stripping, 5,900 mĀ³ excavation)
- Construction of 15 well heads
- Collector and transfer pipe laying (various diameters from DN250 to DN500)
- Generator houses for three substations
Collecting Tank (CT - Bill No. 13)
- 1,000 mĀ³ capacity reservoir
- Pump house with concrete works and electrical installations
- Operation building & chlorine cylinder shed
- Generator house, operator's dwelling, and guard house
- Drainage and foul water disposal system
Ground Water Sites (GW1-GW4)
- GW1: 1,000 mĀ³ reservoir
- GW2 and GW3: 2,500 mĀ³ reservoirs each
- GW4: 2,500 mĀ³ reservoir (simpler configuration)
- Each site includes pump houses, generator houses, operator dwellings, and guard houses
Transmission Pipeline (Bill No. 18)
- Four portions: CT-GW1, GW1-GW2, GW2-GW3, GW3-GW4
- Various pipe diameters with associated excavation and installation works
Distribution System (Bill No. 19)
- Pipe laying for water distribution network
Construction Details
The document provides detailed quantities and specifications for:
- Earthworks (excavation, backfilling, compaction)
- Concrete works (foundations, walls, slabs, columns)
- Reinforcement steel (various diameters from 6mm to 20mm)
- Pipe laying (DCI pipes from DN250 to DN500)
- Structural works (roofing, masonry, finishes)
- Electrical installations (distribution boards, lighting, power sockets)
- Mechanical installations (valves, fittings, water meters)
Project Organization
The document is organized as a detailed Bill of Quantities with:
- Item numbers and descriptions
- Units of measurement
- Quantities
- Unit rates (to be filled by tenderers)
- Amount columns (to be filled by tenderers)
All amounts are to be provided in Ethiopian Birr (BIRR) and Foreign Currency (FC).