For a construction crew of 10 to 19 workers, OSHA wants 1 toilet on site. For an event, plan on 1 portable toilet per 50 guests for a 4-hour event, more if you're serving alcohol. Rock Hill Porta Pros builds every quote around your headcount, hours and site conditions, not a flat guess.
OSHA 1926.51(c) sets the baseline: 1 toilet seat for 20 workers or fewer, then 1 toilet seat and 1 urinal for every 40 workers once you cross 20, and 1 seat plus 1 urinal per 50 workers once you hit 200 or more. A 15-person framing crew needs 1 unit. A 45-person site crosses into the next bracket and needs 1 toilet plus a urinal. Run the math against your actual headcount, not the trailer count, because subcontractors count too. For agricultural crews doing hand labor, the ratio is different: OSHA 1928.110 calls for 1 facility per 20 employees, and it has to sit within a quarter mile walk of where people are working. If you're not sure which bracket your crew lands in, our construction site services page walks through setup by trade, and the standard porta potty rental page has the unit specs you'll need for the quote.
Events run on hours and thirst, not just headcount. A rough guide: 1 unit per 50 people for a 4-hour event without alcohol. Add units if the event runs longer or if beer and wine are flowing, since alcohol pushes people through restrooms faster and adds lines. Here's a starting table for planning:
| Guests | Event length | Units (no alcohol) | Units (with alcohol) |
|---|---|---|---|
| 50 | 4 hours | 1 | 2 |
| 100 | 4 hours | 2 | 3 |
| 150 | 4 hours | 3 | 4 |
| 250 | 6 hours | 5 | 6-7 |
| 500 | 8 hours | 9-10 | 12-13 |
Multi-day festivals need units serviced daily, not just dropped and left. If you're planning a wedding, a wedding restroom rental setup usually leans toward deluxe flushable porta potty units instead of standard ones. For county fairs, races or concerts, check festival restroom rental, marathon and race restrooms or concert restroom rental for setup notes specific to those crowds.
At least 5 percent of clustered portable toilet units must be accessible, and never fewer than one, per ADA Standards 213.2. That accessible unit needs a 60 inch turning circle inside per ADA 304.3.1, a door opening at least 32 inches wide per ADA 404.2.3, and a route to reach it at least 36 inches clear per ADA 403.5.1. The ground leading up to it has to be stable, firm and slip resistant under ADA 302.1, which matters on a muddy Rock Hill jobsite in spring. Operable parts like latches can't require tight grasping or more than 5 pounds of force, per ADA 309.4. Our ADA accessible porta potty page has the full unit rundown, and ADA restroom requirements covers how this applies beyond just placement counts.
A 20 yard dumpster generally holds somewhere in the 2 to 3 ton range depending on material density, and it measures out to roughly 22 feet long, giving you about 20 cubic yards, or 540 cubic feet of capacity when people ask how many cubic feet in a 20 yard dumpster or how many feet is a 20 yard dumpster. That's enough for a mid-size kitchen gut or a roof tear-off on an average Rock Hill home. Weight limits vary by what you're loading, since shingles weigh a lot more than framing scrap per cubic foot. Full sizing details live on dumpster sizes and dimensions and dumpster weight limits, and if you're not sure this is the right size, 20 yard dumpster rental breaks down what typically fits.
A 30 yard dumpster runs about 810 cubic feet of capacity and typically handles somewhere around 3 to 4 tons of mixed debris when people ask how many tons can a 30 yard dumpster hold, though that swings with material type. It's a common pick for whole-house cleanouts or larger renovation jobs where a 20 yard fills too fast. A 40 yard dumpster steps up again, holding roughly 1,080 cubic feet, which answers how many cubic feet in a 40 yard dumpster, and it often carries a similar or slightly higher tonnage ceiling depending on what's loaded when people ask how many tons does a 40 yard dumpster hold, useful for new construction or commercial demolition. A 10 yard dumpster, by comparison, measures closer to 12 by 8 by 3.5 feet, about 270 cubic feet, which covers how many cubic feet in a 10 yard dumpster, right for a small bathroom remodel or garage cleanout. See 30 yard dumpster rental, 40 yard dumpster rental and 10 yard dumpster rental for load examples matched to project type, plus what cannot go in a dumpster before you start tossing.
Yes, if your crew is handling food, doing hand labor in ag settings, or applying paints, coatings, herbicides or insecticides. That last case falls under OSHA 1926.51(f)(1), which requires washing facilities specifically where those contaminants are present, not as a blanket rule for every site. Separately, general potable water access is required under OSHA 1926.51(a)(1). Where handwashing stations are provided, 29 CFR 1910.141(d)(2) requires soap and towels or a hand-drying device; hand sanitizer alone doesn't satisfy it. A framing crew doing no chemical work may not need a dedicated wash station tied to that rule, but a painting crew almost always does. Pair units through handwashing station rental or a portable sink rental, and check handwashing requirements if you're trying to figure out which rule actually applies to your crew.
Placement drives usage more than headcount does. Units need level, stable ground, clear truck access for weekly service, and a route that doesn't cross active work zones or excavation. A roll-off delivery needs about 60 feet of straight clearance behind the truck to set the container safely, and the same clear-approach thinking applies to portable toilet placement near a jobsite entrance. Keep barricades to ANSI D6.1 spec near excavation per OSHA 1926.202, and don't let debris pile up around the unit door, since OSHA 1926.25 calls for cleared work areas generally. If you're placing units near a public sidewalk or right of way in Rock Hill, that placement needs confirming with the city before delivery; we don't guess on that. Full guidance sits on porta potty placement guide and porta potty permit requirements.
Jobsite example: a general contractor in Rock Hill has 35 workers on a framing crew, no paint or coatings work yet. That crew sits in the 20-to-40 bracket under OSHA 1926.51(c), needing 1 toilet seat plus 1 urinal. Once the crew grows past 40 or a painting sub joins and starts spraying coatings, the count and the wash station requirement both change. A porta john rental or two handles the early phase; add a handwashing station rental when the painters show up.
Event example: a 200-guest outdoor wedding near India Hook, 6.8 miles north of Rock Hill, running 5 hours with a beer and wine bar. That lands above the 150-guest row on the table above, so plan for roughly 5 to 6 units, leaning toward deluxe units for a wedding crowd. A fairground event near Lesslie, 7.1 miles southeast, drawing 500 people over 8 hours with alcohol service, needs closer to 12 to 13 units and daily servicing if it runs more than one day. Get a firm count through request a quote rather than guessing off a table alone, since ground conditions and hours both shift the number. For general delivery radius questions, porta potty rental in Rock Hill and service areas cover towns like Fort Mill, 8.3 miles northeast, and Tega Cay, 12.9 miles north.
Plan on 2 units for a 4-hour event without alcohol, per the standard 1-per-50 guideline. Bump to 3 if alcohol is served or the event runs past 4 hours. A event restroom rental quote will confirm the exact count once you share your hours and bar setup.
It's not per-person, it's per-bracket under OSHA 1926.51(c): 1 unit covers up to 20 workers, then ratios shift at 20 and again at 200. A 12-person crew and a 19-person crew both need just 1 toilet.
Standard units are the basic 60 to 70 gallon tank style; deluxe units flush and often include a sink. For weddings and upscale events, deluxe reads better and services easier over a multi-hour reception. Check deluxe flushable porta potty for the full spec.
Yes. Alcohol increases restroom trips and shortens the interval between visits, so add roughly one extra unit per bracket compared to a dry event of the same size and length, as shown in the table above.
Multi-day events typically need daily servicing rather than the standard weekly interval used on long-term rentals. How often are porta potties cleaned covers standard service intervals and how event schedules differ.
That depends on the scope: a 10 yard dumpster suits a single-room remodel, while a 20 or 30 yard fits a whole-house job. See dumpster rental cost and home renovation porta potty for pairing guidance.
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