Easy⏱ time1 hr$ cost6
Rainwater Harvesting
Model a rooftop catchment that channels rain into a storage tank.
Start building ↓
Result first
The build
Step 01
Build the roof
Slope a board over a stand.
Step 02
Add a gutter
Run a cut-bottle gutter to a downpipe.
Step 03
Feed the tank
Direct flow into a storage jar.
Step 04
Test rain
Pour water and measure what's captured.
Working Principle
The sloped roof channels rain to a gutter and downpipe into storage, capturing water that would otherwise run off and be lost.
The science behind it
A closer look
Capture volume scales with roof area and rainfall; harvested water eases demand on mains supply.
Take it further
Variables to test
- 1 Bigger roof area — more captured?
- 2 Add a first-flush diverter — cleaner water?
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