The principle
Separation and siting are everything. Solids and urine kept apart, every unit at least 10–15 m from any water source, vent stacks that actually draw. Volunteer induction before first use, always.
Materials
- Food-grade hose
- gravel
- sharp sand
- geotextile
- wooden frame
- inspection caps
Tools
- Spade
- tape
- hand saw
- pipe cutter
- raking tools
Reclaimed from
Plastic pipe offcuts + outdoor fittings + slate/timber scraps