The building slab is a 5” thick concrete slab with part of it bearing on the ground while the rest is located on top of rammed earth tire walls. The tire walls are topped with an 8” deep concrete bond beam to stabilize them and the building slab is supported by a concrete beam framing tying into this bond beam and concrete columns founded on individual square footings at the level below.

The building structure consists of two rows of 9’ tall concrete columns carrying a continuous 30’ long concrete beam following the North-South axis. Most of the columns are sitting right above the tire walls located below and thus do not require proper foundations.

The roof structure is a concrete slab supported by beams sitting on the two rows of supports mentioned above. The flat roof is not a structural choice but a constraint due to the water tanks the roof needs to carry.

Non-structural walls fill the space between the columns creating the delimitation with the outdoor space. The interior space measures 550 sq ft.

Most of the walls are made of ecobricks and cob (earth + sand + straw) and glass-bricks (two bottle bottoms taped together) added to illuminate the room. The remainder of the walls is made out of compacted trash bricks.