What happens on install day

1. Excavation

The crew digs to the depth on the stamped drawings, slopes or benches the walls or sets shoring, and keeps the spoil at least 2 feet back from the edge. A competent person inspects the excavation at the start of each shift and after rain or anything else that could change it.

2. Bedding and drainage

A level bed of compacted granular material goes down to the grade on the drawings, with perimeter drain pipe to carry water away from the structure.

3. Setting the cubes

Cubes arrive one to a truck. The crane lifts each one by its lifting points and lowers it into place. Alignment points bring each new cube square to the one beside it.

4. Mating and sealing

At every joint, a mate package on each cube is bolted and sealed with gaskets, opening two cubes into one room. Outside walls get the exterior door, the emergency exit, or a blank end cap. The exterior is waterproofed at the seams.

5. Backfill

Backfill goes in layers, compacted as it goes, with material that will not damage the coating. The air intake, exhaust, entry and exit are brought up to the surface.

6. Commissioning

The air, power, water and plumbing systems are started and tested, and the household is trained on each one before handover.

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