Most jobsites need 1 portable toilet per 10 workers on an 8 to 10 hour shift, per week. Events run different math: roughly 1 unit per 50 guests for the first 4 hours, adjusted for alcohol and extra hours. Richardson Porta Pros builds your count around OSHA 1926.51(c) for jobsites and headcount tables for events.
OSHA 1926.51(c)(1) sets the real bracket, and it is not one toilet per worker. For 20 or fewer workers, you need 1 facility. From 20 up to 200 workers, it is 1 toilet seat and 1 urinal per 40 people. At 200 or more, that ratio opens to 1 seat and 1 urinal per 50. A 35-person framing crew in Richardson falls in the second bracket: 1 toilet and 1 urinal, and most contractors add a second standard porta potty rental anyway to cut walk time. Pair that with OSHA 1926.51(a)(1), which requires potable water on site regardless of crew size. If your crew works with paints, coatings or insecticides, OSHA 1926.51(f)(1) kicks in a washing station requirement on top of the toilet count. Review the full bracket table on our OSHA portable toilet requirements page before you order.
Events scale by guest count and hours, not worker headcount, and alcohol changes the math fast. A rough starting point: 1 unit per 50 guests for a 4 hour event with no alcohol. Add a unit for every additional 2 hours, and add another 10 to 15 percent of your total if you are serving beer or wine, since drinking crowds cycle through restrooms twice as often. A 300 person wedding reception running 6 hours with an open bar in Richardson lands around 8 to 9 units once you factor both adjustments. See wedding restroom rental and event restroom rental for planning specifics, and check ADA restroom requirements since public events usually need at least one accessible unit under ADA Standards 213.2.
| Guests | Hours | No alcohol | With alcohol |
|---|---|---|---|
| 50 | 4 | 1-2 units | 2-3 units |
| 150 | 4 | 3-4 units | 4-5 units |
| 300 | 6 | 6-7 units | 8-9 units |
| 500 | 8 | 10-12 units | 13-15 units |
Multi-day runs need more service, not always more units, but tank capacity still matters. A standard unit carries a 60 to 70 gallon holding tank, and ANSI/PSAI Z4.3 sets a baseline service interval of once per week for up to 10 users across a 40 hour week. Stretch that to a 3-day festival with the same crowd density, and you either add units or add service visits mid-run. For jobsites running a full month, look at monthly porta potty rental pricing instead of pricing by the day, since the per-day cost drops once you commit to a longer term. Multi-day construction in Richardson often adds a deluxe flushable porta potty for foremen and office staff to spread demand off the standard units.
Debris volume follows a similar headcount logic once you know the box sizes. A 10 yard dumpster holds about 10 cubic yards, which works out to roughly 2,700 cubic feet, and fits driveways or small cleanouts. A 20 yard dumpster runs about 22 feet long and holds close to 5,400 cubic feet, handling 2 to 3 tons on a typical debris load. A 30 yard box can carry 3 to 4 tons depending on material, and a 40 yard dumpster, the largest standard size, can take 4 to 5 tons and holds around 10,800 cubic feet. Match dumpster size to your crew size the same way you match toilets: bigger crews generate more waste per day, and OSHA 1926.25 still requires clearing debris from active work areas regardless of box size. Full dimensions live on dumpster sizes and dimensions, and roll-off dumpster rental covers delivery logistics, including the 60 feet of straight clearance a delivery truck needs behind the drop point.
| Dumpster | Approx. cubic feet | Typical tonnage |
|---|---|---|
| 10 yard | 2,700 | 1-2 tons |
| 20 yard | 5,400 | 2-3 tons |
| 30 yard | 8,100 | 3-4 tons |
| 40 yard | 10,800 | 4-5 tons |
Check 10 yard dumpster rental, 20 yard dumpster rental, 30 yard dumpster rental, and 40 yard dumpster rental for size-specific pricing, and dumpster weight limits if you are hauling concrete or shingles, since those materials fill tonnage fast without filling the box.
Pricing runs by unit type and rental length, and the two move together: a longer rental costs more total but less per day. A standard portable toilet in Richardson typically rents for 100 to 350 dollars a day, 130 to 500 dollars a week, and 125 to 325 dollars a month. An ADA-accessible unit runs 200 to 400 dollars a day or 120 to 240 dollars a week. Roll-off dumpsters land between 51 and 112 dollars a day, and 426 to 778 dollars for a full week.
| Unit | Day | Week | Month |
|---|---|---|---|
| Standard toilet | 100-350 | 130-500 | 125-325 |
| ADA toilet | 200-400 | 120-240 | -- |
| Roll-off dumpster | 51-112 | 426-778 | 91-500 |
Delivery fees run separately, typically 100 to 500 dollars depending on distance and access. Full breakdowns sit on porta potty rental cost, porta potty rental per day, and dumpster rental cost.
Placement rules matter as much as the count itself. ADA Standards 403.5.1 requires a 36 inch clear route to any accessible unit, and 404.2.3 sets a 32 inch minimum door opening. Ground under the unit needs to meet ADA Standards 302.1 for stable, firm, slip-resistant surface, which rules out soft turf or loose gravel for accessible placements. If units sit near a public sidewalk or street in Richardson, placement in the right of way needs confirming with the city; we have not verified a specific ordinance for that, so check with Richardson before locking in a curbside spot. Our porta potty placement guide covers ground clearance and access lanes, and porta potty permit requirements walks through what to ask the city before delivery day.
Yes, if food service, painting work or general labor is involved, and the two contaminant contexts matter for which rule applies. OSHA 1926.51(f)(1) requires washing facilities specifically where crews apply paints, coatings, herbicides or insecticides. For general industry settings outside construction, 29 CFR 1910.141(d)(2) requires soap and towels or a hand-drying device at wash stations, and hand sanitizer alone does not satisfy that rule. A typical ratio is 1 handwashing station per 2 to 3 toilets on a food-service or painting crew. Farm labor sites fall under a different standard entirely: OSHA 1928.110 requires field sanitation with potable water, toilets and handwashing within a quarter mile walk for hand-labor employees. See handwashing station rental and handwashing requirements for setup specifics, or portable sink rental if you need a self-contained sink instead of a basic station.
For a 4 hour event with no alcohol, plan on 2 to 3 units per 100 guests. Add alcohol service and that climbs toward 3 to 4, since drinking crowds use restrooms more often. Multi-day events need added service visits, not just more units, to keep tanks from filling mid-event.
A 30 yard dumpster typically holds 3 to 4 tons, depending on material density. Concrete and shingles fill weight limits fast while barely filling the box. Check what cannot go in a dumpster before loading heavy debris, since some materials need separate disposal entirely.
A 10 yard dumpster holds about 2,700 cubic feet of debris. That size fits most driveway cleanouts, small remodels and single-room demolition jobs. It is the smallest standard roll-off size most Richardson contractors order for residential work.
A 20 yard dumpster runs about 22 feet long on most trucks, though exact dimensions vary by manufacturer. Confirm clearance before delivery, since the truck needs roughly 60 feet of straight approach space behind the drop point.
Yes, once you cluster multiple standard units. ADA Standards 213.2 requires at least 5 percent of clustered portable toilets to be accessible, and never fewer than one unit regardless of cluster size. A single event with 10 standard units still needs at least 1 ADA-compliant unit on site.
Book as early as you can once your headcount firms up, especially for weekend events near Murphy, 8.5 miles northeast, or Sachse, 10.3 miles east, where regional demand overlaps. Multi-day festivals and weddings should lock units weeks out. Visit request a quote to start the count conversation early.
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