The building is the latrines of a house which has three other rooms: a kitchen, bedroom, and bathroom.

The latrines are made of two stalls which are each composed of a toilet, a urinal and a sink. A single stall is used until the associated solid waste chamber is full. The second stall is then used in the same way. Once the second chamber is full, the solid waste in the first chamber has had enough time to be ready to be used as a fertilizer. The first chamber can therefore be emptied and the first stall can be used again.

The latrines structure consists of 10’ tall timber frame walls and timber posts creating 2 rows of supports for the roof structure. The roof is made of six vertical bamboo triangular trusses. These trusses are 5’ tall by 15’ wide and evenly spaced while their members are linked using plywood boards and bolted connections. They are covered by pine boards with nailed shingles made out of plastic bottles.

The timber frame walls sit on a 4” concrete slab founded on tire walls. These walls form the two 720-gallon solid waste chambers that each open on the South side to enable the extraction of the solid waste.

External timber frame walls are wrapped in plastic sheeting to limit water infiltration and covered on the outside with a softwood finish. Internal timber frame walls are filled with ecobricks wrapped into a thin metal grillage (usually called “chicken wire”) covered by a layer of mortar (cement + river sand).

In each stall, the greywater coming from the sink flows into the urinal where it acts as a flush. It then joins the toilet urine pipe before reaching a box located on the South of the latrines where greywater is collected for fertilization purposes.