How many toilets does a construction crew need?
The federal construction standard sets the minimum by crew size. OSHA's table starts at one toilet for a crew of 20 or fewer and sets more seats and urinals as the headcount rises.
OSHA's table is the starting point. For a crew of 20 or fewer workers, one toilet meets the minimum. Above that number the table sets the count of seats and urinals by headcount, so a larger crew needs more units, and the superintendent should check the headcount against the table before the order is placed. Be wary of a one-per-20-workers rule of thumb, which circulates in rental material and is not how the table reads.
Why do units have to stay sanitary?
Under the federal guidance, a toilet in unsanitary condition does not count toward the minimum, so a unit that is not serviced is not a unit the site really has.
The count only works if the units are usable. A unit that has filled, run out of paper or lost its door latch may be taken out of use by the crew, and the site falls below the minimum without anyone noticing. A technician sets the service interval to the crew's use, so the unit is pumped before it fills and restocked on each visit. A unit that is tipped, broken or fouled is taken out of service and replaced rather than left in place.
Where should the units go on a job site?
Units go on firm, level ground close to the work area and off the haul route, with a truck lane that stays clear while the site is working.
The best spot is a short walk from the work but outside the path of heavy equipment, material deliveries and open excavations. A unit beside a trench or a stacked load is a hazard, and a complaint, at once. The technician asks the superintendent where the active work will be over the next few weeks, because a unit placed for the framing crew can end up in the path of the concrete trucks.
How is the service interval set on a job site?
The interval follows the crew's use and the site's activity. A crew of twenty uses a unit far more than a crew of four, so the visit schedule is set from the headcount and the weeks ahead.
A holding tank fills in proportion to use, not to the calendar. A crew working a busy frame or pour uses a unit heavily through a shift, and the service visits go up with the headcount. The technician agrees a weekly or twice-weekly visit for most sites and adds visits when the site is busy. The first two visits show whether the schedule needs to change.
What changes the price?
Crew size, the number of units, how long they stand, how often they are serviced and the access to the ground all change the quote. The price is explained and approved before work starts.
The count is the largest factor. Each unit needs its own placement and its own place on the route, and a larger crew needs more units to meet the minimum. The length of the job matters next. A unit on a remodel for a month is a different job from one that stays on a multi-year build, and the service visits follow the length of the job.