Main page
New page
Upload file
Help
Community portal
Recent changes
Talk
Contributions
Create account
Enable dark mode
Enable read mode
Log in
View history
What links here
Related changes
Page information
Editing
Rainwater Harvesting (Practical Action Technical Brief)
(section)
From Appropedia
Warning!
You are not logged in.
Log in
or
create an account
to have your edits attributed to your username rather than your IP, along with other benefits.
Anti-spam check. Do
not
fill this in!
==== Storage tanks and cisterns ==== [[File:pract.act.rain.water.fig.4a.jpg|thumb|Figure 4a: An owner-built brick tank in Sri Lanka]] [[File:pract.act.rain.water.fig.4b.jpg|thumb|Figure 4b: A corrugated iron RWH tank in Uganda]] [[File:pract.act.rain.water.fig.5.jpg|thumb|Figure 5: Ferrocement tank in Ruganzu Village, Tanzania.]] [[File:pract.act.rain.water.fig.6.jpg|thumb|Figure 6: Small jars used in Cambodia as part of a multi-sourced water supply.]] The water storage tank usually represents the biggest capital investment element of a domestic RWH system. It therefore requires careful design to provide optimal storage capacity while keeping the cost as low as possible. The catchment area is usually the existing rooftop or occasionally a cleaned area of ground, as seen in the courtyard collection systems in China. The guttering for the system can often be obtained relatively cheaply, or can be manufactured locally. There are an almost unlimited number of options for storing water. Common vessels used for very small-scale water storage in developing countries include plastic bowls and buckets, jerrycans, clay or ceramic jars, cement jars, old oil drums, empty food containers, etc. For storing larger quantities of water, the system will require a tank or a cistern. For the purpose of this document, we will classify the tank as an above-ground storage vessel and the cistern as a below-ground storage vessel. These can vary in size from a cubic metre or so (1000 litres) up to hundreds of cubic metres for large projects. The typical maximum size for a domestic system is 20 or 30 cubic metres. The choice of system will depend on a number of technical and economic considerations listed below. * Space availability * Options available locally * Local traditions for water storage * Cost of purchasing new tank * Cost of materials and labour for construction * Materials and skills available locally * Ground conditions * Use of RWH β whether the system will provide total or partial water supply One of the main choices will be whether to use a tank or a cistern. Both tanks and cisterns have their advantages and disadvantages. Table 1 summarizes the pros and cons of each: [[File:pract.act.rain.water.table.1.jpg]]
Summary:
Warning!
All contributions to Appropedia are released under the CC-BY-SA-4.0 license unless otherwise noted (see
Appropedia:Copyrights
for details). If you do not want your writing to be edited mercilessly and redistributed at will, then do not submit it here! You are also promising us that you wrote this yourself, or copied it from a public domain or similar free resource.
Do not submit copyrighted material without permission!
Cancel
Editing help
(opens in new window)
Cookies help us deliver our services. By using our services, you agree to our use of cookies.
OK
Discussion