Rammed Earth Foundation

Foundations out of rammed earth plus stabilizer are very low-cost but not very structurally stable and not very resistant to moisture.

Auroville Earth Institute

This is a protocol for building foundations of rammed earth. It is from the Auroville Earth Institute. See full description here (website pdf-copied [xxxx here]).

Basics:

• used in Auroville for all kinds of buildings (up to 4 floors high).
• soil is excavated, sieved, then sand added
• 5 % by weight of cement (500 litres soil + 200 litres sand = 1 bag cement, 50 Kg)
• start ramming

Links

• Page from "Appropriate Building Materials: a Catalogue of Potential Solutions" "Rammed earth foundations"