Designing an Ablution Block for a Worker Camp

Camp accommodation gets the attention and ablution gets the budget cut, which is why the first complaint on a new camp is almost always about showers. The fix at design stage is cheap; the fix after occupation is a new module.

Provision ratios

These are planning figures. Local labour codes and client HSE standards frequently specify tighter ratios, and the tighter figure governs.

Layout principles

• Dry and wet separated: a changing/drying zone before the shower cubicles, so boots and clothing do not enter the wet area.
• Privacy: cubicles with full-height doors and a gap at the floor for ventilation, never a single open shower room for a mixed workforce.
• Line of sight: no direct view from outside into any cubicle; consider a screened approach.
• Accessible unit: at least one WC and one shower designed for reduced mobility.

Water and drainage

Peak hot water demand is the design case: count showers assumed to run simultaneously at roughly 8 litres per minute for 5 minutes each. A storage cylinder plus a suitably sized heater covers the peak that an instantaneous heater alone cannot. On the drainage side, showers need a trap and a fall to a gully; floor drains in the drying area stop water tracking into the accommodation.

Ventilation and condensation

Ablution blocks are the most humid space in any camp. Mechanical extract sized on air changes, running continuously or on a humidistat, prevents the condensation that otherwise drips from the ceiling panel and corrodes the fixings. Insulate the extract duct where it passes through a cold zone, or the duct itself becomes a drip tray.

Maintenance reality

Specify fixtures with replaceable cartridges, provide isolation valves to every group of fixtures so one failure does not shut the block, and keep a stock of shower heads, tap cartridges and trap seals. In a camp of 300 workers, a blocked shower drain is a daily event; the design should make clearing it a ten-minute job with a rodding eye outside the cubicle.