De quoi est fait hypocaust
Roman underfloor heating with hot air.
- Firebox — a pour partie. A furnace outside the building.
- Space under floor on brick pillars — a pour partie. A space under the floor on brick pillars.
- Wall heating flues — a pour partie. Pipes in the walls for hot air.
- Convection — utilise. Hot air under the floor.
- Combustion — utilise. Hot air from the furnace heats the floor.
- Brique — est fait de. The pillars of a hypocaust are brick.