15. Permanent summer camps: The permanent summer camps are subject to the following measures:(a) tents may be used as camps during the period extending from 15 May to 1 October exclusively;
(b) the dimensions of sleeping-tents must be calculated on a basis of at least 250 ft3 for each single bed;
(c) each tent must be provided with a double top;
(d) sleeping-tents used as kitchens and dining-rooms must be provided with a wooden wall at least 4 ft high from the floor, but the total height of the tent wall must not be less than 8 ft high from the floor. The wall must be suitably weather-proofed and the outside walls earthened up;
(e) the floors must be 12 in from the ground and must cover the entire interior of the tent; a lower floor may be tolerated if the ground is very dry. Floors made of logs properly levelled and smooth enough to be easily washed and cleaned, may be tolerated;
(f) tents must be heated to the satisfaction of the inspector;
(g) a special tent, heated, must be pitched to allow employees to dry their working clothes; the wash-tubs may be installed in the tent. It is not necessary to provide the tent with a wooden wall, but it must have a wooden floor;
(h) a sink must be installed to provide for the use of a basin for each 5 men;
(i) the employer must take suitable means to protect the workers against flies and mosquitoes by installing insect screens at all openings;
(j) tents must be made of a material capable of providing good ventilation and sufficient light; sleeping tents and tents used as a kitchen or dining-hall must not be used as work-rooms;
(k) all other provisions concerning permanent camps and dealing with the site, water, latrines, stables, wash-houses, beds, cesspools and residual materials must be strictly observed.