Barefoot Architect Benchmarking

• Elizabeth Primus• 2:1 ratio (sand to

cement)• Water (average slump)• Onion bag sheets• 3 Layers (cement-onion

bag)

Laying up• Results

– Dry weight: 66.5 lbs.– Dimensions: 31.25”x30.5”x1.25”

• 10” Diameter-waste hole– Max Load: ~350 lbs.

• Conclusions– 1.25” thickness gets us marginal

strength requirements (270 lbs.)– 96 lb./ft^3 (no course

aggregates)– Onion bag improves tensile

strength – Rice bag deconstruction could

create jobs