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How many porta potties do I need for a construction crew?
Start with OSHA 1926.51(c): one toilet seat for 20 workers or fewer on site. Once you cross 20 workers, the rule shifts to one toilet seat plus one urinal for every 40 workers, and at 200 or more workers it drops to one seat and one urinal per 50. A 12-person framing crew working a standard week needs just one standard porta potty rental. A 75-person site sits in the 40-worker bracket and needs two seats plus urinals to stay compliant. Crews doing painting, staining or pesticide work also trigger washing facility requirements under OSHA 1926.51(f)(1), which covers paints, coatings, herbicides and insecticides specifically, so budget a handwashing station rental alongside the toilets, not instead of them. For multi-week jobs, a monthly porta potty rental usually beats renewing a weekly contract, and delivery within Savannah keeps logistics simple compared to a haul from Pooler, 14.7 miles northwest, or Richmond Hill, 19.0 miles southwest.
How many porta potties do I need for an event?
Use headcount and hours together, not headcount alone. A wedding of 100 guests running 5 hours needs roughly two to three standard units, or one ADA accessible porta potty plus one or two standard units to meet ADA Standards 213.2, which requires at least one accessible unit in any cluster. A festival pulling 1,000 attendees over 8 hours needs a different math entirely. Here is a rough guide for planning an event restroom rental in Savannah:
| Guests | Event length | Units needed (no alcohol) | Units needed (with alcohol) |
|---|---|---|---|
| 50-100 | 4 hours | 2 | 3 |
| 100-250 | 4 hours | 4 | 5-6 |
| 250-500 | 6 hours | 7-8 | 10 |
| 500-1000 | 8 hours | 12-14 | 16-18 |
Alcohol service pushes usage up because guests drink more fluids and visit more often. A festival restroom rental or concert restroom rental plan should always assume the higher column if a bar is involved.
Does alcohol change how many units I need?
Yes. Alcohol adds roughly 20 to 30 percent more restroom visits per guest compared to a dry event. A 300-guest wedding reception with an open bar running 6 hours should add at least two extra standard units beyond the dry-event number, plus consider a deluxe flushable porta potty for the bridal party area. Multi-day events compound this further. A three-day county fair does not need three times the daily unit count, but it does need daily servicing built into the contract, since ANSI/PSAI Z4.3 sets a baseline service interval of once per week for up to 10 users across a 40 hour week. High-traffic, multi-day events need service far more often than that baseline, so confirm servicing frequency when booking county fair restrooms or a golf tournament restrooms package.
What about worked examples for a real jobsite?
Take a Savannah renovation crew of 35 people working 10 hour days for six weeks. That crew crosses the 20-worker threshold, so OSHA 1926.51(c) calls for one toilet seat and one urinal per 40 workers, meaning this crew needs one full combo unit at minimum, though most contractors add a second standard unit for wait-time relief. A home renovation porta potty order for a job this size typically pairs one standard unit with a second for redundancy, since a single unit failure on a six-week job stalls the whole crew. Compare that to a small deck-building crew of 6, which stays comfortably under the 20-worker line and needs just one unit for the full job, a case covered in more depth on the porta potty rental checklist page.
What about a worked example for an event?
Picture a golf tournament outside Savannah with 400 golfers spread across an 18-hole course over 8 hours, no alcohol until the clubhouse reception. Course restrooms should be spaced along the back nine and front nine separately, not clustered at the clubhouse, since golfers will not walk back mid-round. That means roughly 8 units total, with at least one accessible unit near the clubhouse per ADA Standards 213.2, and a mobile portable restroom rental cluster near hole 9 and hole 18 where foot traffic peaks. A marathon with 800 runners over 4 hours needs a similar count concentrated at the start and finish lines rather than spread along the course, since runners use restrooms in short windows, not evenly across the route. That pattern shows up again in marathon restroom rental planning across the region.
How does dumpster size factor into a jobsite plan?
Restrooms are only half of a site services order. Most Savannah renovation and demo jobs also need a dumpster, and sizing that follows the same headcount-and-duration logic as toilets. So how many feet is a 10 yard dumpster and how many cubic feet does it hold. A 10 yard dumpster runs about 10 feet long and holds roughly 1,350 cubic feet, right for a single-room gut job. A 20 yard dumpster is closer to 20 feet long, holds about 2,700 cubic feet, and answers how many tons does a 20 yard dumpster hold with a typical 2 to 3 tons of debris, which covers most kitchen or bathroom remodels. Move up to a 30 yard dumpster and you get roughly 4,000 cubic feet, and for how many tons can a 30 yard dumpster hold the answer is a 3 to 4 ton capacity, suited to whole-house flooring or roofing tear-offs. For how many cubic feet in a 40 yard dumpster and how many tons does a 40 yard dumpster hold, expect around 5,400 cubic feet and 4 to 5 tons, the size most demolition contractors order for full structure teardowns. Details on dumpster sizes and dimensions and a breakdown of what cannot go in a dumpster are worth reviewing before delivery, since a roll-off delivery needs about 60 feet of straight clearance behind the truck to place the container safely. Pair a 30 yard dumpster rental or 40 yard dumpster rental with your restroom order and both show up on the same delivery run.
Should I add extra units for hot weather or long jobs?
Yes, and Savannah's summer heat makes this more than a comfort issue. Crews drink more water in July and August, which increases both toilet visits and handwashing needs. A site running June through September should add roughly 10 to 15 percent more units than the same crew size would need in cooler months, and should not skip the handwashing station rental even on jobs without paints, coatings, herbicides or insecticides, since OSHA 1926.51(c) still governs general sanitation and OSHA 1926.51(a)(1) still requires an adequate supply of potable water at every jobsite. Jobs running past 90 days should also plan for tank servicing frequency, not just unit count, since a 60 to 70 gallon holding tank on a standard unit fills faster with more frequent use in hot weather. Long-duration jobs in Savannah or nearby Garden City, 7.5 miles north, often shift from weekly to twice-weekly service rather than adding units, which is usually the cheaper fix.
Pricing for any of these configurations depends on unit type and rental length. A standard unit runs in the range of a single day up through a full month, and weekly and monthly rates drop the per-day cost compared to a one-off delivery. Full current figures live on the porta potty rental cost and porta potty rental per day pages. For a fast answer tailored to your headcount, hours, and site address, request a quote and a Savannah-based coordinator will size the order before delivery day.
How many porta potties do I need for 100 guests?
Plan on 3 to 4 standard units for 100 guests over a 4 to 5 hour event without alcohol, or 5 to 6 if a bar is involved. Add one accessible unit to meet ADA Standards 213.2. A wedding restroom rental at this size usually pairs two standard units with one deluxe unit for the wedding party.
How many tons does a 30 yard dumpster hold?
A 30 yard dumpster typically holds 3 to 4 tons of debris, depending on material density. Heavier loads like concrete or shingles fill the weight limit long before the container looks full, so check dumpster weight limits before loading mixed demolition debris.
How many cubic feet are in a 20 yard dumpster?
A 20 yard dumpster holds about 2,700 cubic feet of debris and runs close to 20 feet long. That size fits most single-room remodels and matches the volume of a small deck or fence teardown, covered further on the 20 yard dumpster rental page.
Do I need an ADA unit even for a small event?
Yes, if you have any cluster of portable toilets on site. ADA Standards 213.2 requires at least one accessible unit whenever single-user toilets are grouped, regardless of guest count. A single stand-alone unit at a small gathering does not require this, but two or more units together do.
How often do porta potties get serviced during a multi-day event?
ANSI/PSAI Z4.3 sets a baseline of one service per week for up to 10 users across 40 hours, but multi-day events with hundreds of guests need daily or twice-daily servicing. Confirm the schedule in writing before the event starts, especially for county fair restrooms running three or more days.
Can I mix standard and deluxe units on the same jobsite?
Yes, and many Savannah contractors do exactly that. Crew areas typically get standard porta potty rental units, while a site office or VIP area at an event gets a deluxe flushable porta potty or a small restroom trailer rental instead.
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