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PROJECTS |
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Establishment of a
Rain Water
Harvesting System at Royal College, Colombo |
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Project Area |
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Royal College, Colombo 7 |
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Duration |
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August 2010
(Project
Completed) |
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Funded
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Royalty Pledge
Management Committee, Royal College
Union (Behalf of Royal College,
Colombo 7) |
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Objectives |
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Collect water for home gardening |
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Promote
green concepts among students |
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Design of the
RWH System |
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Rain fall: |
Annual 1,700 mm |
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Roof size: |
59 m x 11 m = 600 m2 |
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Distribution line: |
Estimated
170 ft |
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Water requirement: |
Gardening
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Estimated supply of water per day during
dry period: |
From Total 16 m3 (16,000 liter) of
capacity tanks = 1,350 per day |
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Layout plan of the RWH system |
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Specification of RWH Tanks |
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Tank capacity and Type: |
2 tanks of 8 m3
(16,000 liters), Ferrocement tanks with
a brick
base (2ft height) for each tank (Picture
3) |
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Down pipe: |
Water Supply from down pipe to tanks of 4” pipes estimated
length 40 m (Picture 1) |
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First flush & Plug: |
First flush of 4” pipe
with plug (Picture 2) |
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Over
flow
& Washout: |
Over flow directed to
drain Washout from each tank is
accessible from drain (Picture 4) |
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Distribution pipe |
Water distribution pipe
from tanks to vegetable garden ½ “ pipe
estimated length 60 m |
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Photos |
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