The maximum height of a BTC (Compressed Earth Brick) wall is generally limited by a lifting (height/thickness ratio) of 10 to 20, often limiting load-bearing walls to around 2.5 m - 3 m in height for standard thicknesses.
. The settlement is low, about
per meter of height.
Key points of height and BTC design:
Lifting: To ensure stability, the height/thickness ratio should not exceed 15, and in some cases 20.
Practical height:
BTC on chant (10 cm) : Height from 1.5 m to 2 m.
BTC flat (15 cm) : Height from 2.2 m to 3 m.
Safety (slenderness 10) : A wall 30 cm thick can reach up to 3 m in height.
Creep : The estimated settlement is
per meter of height.
Stability : The use of chains and stiffening posts is recommended for tall walls.
For exterior walls, protection against rain (roof overhangs, coatings) is crucial for the longevity of the structure.