There is going to be a large industrial construction project starting in the near future in my town. Yesterday 10 port-a-potties magically appeared next to the job site. 10 of them, all in a row. The job site is 4 vacant city blocks. Is there a certain number of the port-a-potties for the number of people expected to be working? If so, what is the number of people per potty? If it is not the number of people, is it the dependent of the size of the job site? Or do you think the company doing the work just put an arbitrary number of the potties there? The company follows OSHA standards fairly well.
It's usually a 10 person per PP at most jobsites. But there are no real 'rules' available....You can only have a real count on your own employees (being the General Contr) but you cant tell which subs might show up on certain days, you can only guess. I would say that a large company will order an ample number because they'll want to avoid issues that could make them look bad (like a smelly area that the public walks by)
They'll typically have a weekly cleaning schedule and the cost is only about $100 per month ea.
10 people for one week. They can get pretty gross with less than that too. If they dropped off 10 then I would guess they expect up to 100 full time workers.
OSHA standard is at least One portable toilet per 20 workers.
Call the contractor and ask how many he expects, for how long, and when, realizing that when may be a soft number.
That call might be a call to your bird dog (so to speak), so maybe go visit with 12 pack and leave 10 when you go with some pre-printed maps and rental rate flyers.