| Water purification, distribution and sewage disposal for Peace Corps volunteers |
|Section 4: Characteristics of an adequate system|
ARRANGEMENT OF THE NETWORK
There are two main systems of distributing water in a community:
This consists of direct lines from the mains to the outlet without inter-connected lines (see Fig. 35 ).
1. Easy to install
2. Takes less material for pipes
3. Best for small, unplanned community layout.
4. Disadvantage: If water not used often may breed bacterial at the stagnant end.
In this, the ends of all the supply lines are connected so there is continuous flow of water in the system while it is being drawn from any point in the loop (see fig. 36 )
1. No stagnant water
2. Less vulnerable to breakdowns since valve arrangements may be made to re-route the flow of water, isolation small trouble areas.
3. Suitable for well-planned community.
Generally, in a large community. the loop system can be used around main residential or business areas; sod the deed-end system for the rest of the system
The network of pipes should be arranged so large primary mains feed snarled secondary pipes. Branches or feeders carry water from mains to service connections. Service pipes carry water from the branch to the building.