For a construction crew of 20 or fewer, one unit covers you under OSHA rules. For an event, plan on one standard unit per 50 guests for a 4 hour stretch. Round Rock Porta Pros builds the exact count around your headcount, hours and whether alcohol is served, since that last part changes everything.
Start with OSHA 1926.51(c). It sets the bracket: one toilet seat for 20 workers or fewer, then one seat and one urinal per 40 workers once you pass 20, dropping to one seat and one urinal per 50 workers at 200 or more. That is the floor, not the ideal number. A 15-person framing crew in Round Rock needs just one standard porta potty rental, but a 60-person site crosses into the 40-worker bracket and needs two seats plus urinal capacity. Multi-trade sites with staggered shifts often run a unit high to avoid lines at breaks. If your crew works with paint, coatings or insecticides, OSHA 1926.51(f)(1) kicks in separately and requires washing facilities beyond the toilet count, which is where a handwashing station rental earns its spot on-site. Check the full bracket table on our OSHA portable toilet requirements page before you order. For general contractors juggling several trades under one gate, our construction site services page bundles fencing, dumpsters and toilets so nobody's guessing twice.
Events run on headcount and hours, not headcount alone. A 200-guest wedding lasting 4 hours needs fewer units than a 200-person festival running 10 hours with a beer tent. Use this as a starting table, then adjust:
| Guests | Duration | Units Needed |
|---|---|---|
| 50 | 4 hours | 1 standard |
| 100 | 4 hours | 2 standard |
| 200 | 4 hours | 3-4 standard |
| 300 | 6 hours | 5-6 standard |
| 500 | 8 hours | 8-10 standard |
Add one accessible unit under ADA Standards 213.2, which requires at least 5 percent of a cluster to be accessible with never fewer than one. That single ADA unit needs a 60 inch turning circle per ADA Standards 304.3.1 and a route at least 36 inches wide per ADA Standards 403.5.1, so leave room on the pad. Our ADA accessible porta potty page covers spacing in more depth. For weddings specifically, see wedding restroom rental; for anything with a stage and a crowd, festival restroom rental and concert restroom rental both walk through the math by attendance.
Yes, and it changes it a lot. Alcohol service pushes bathroom trips up by roughly a third compared to a dry event of the same size, mostly because trips get shorter and more frequent as the night goes on. A 150-guest backyard party serving beer and wine for 5 hours should add one extra unit over the dry-event math, and a full open bar for a corporate party should add two. Multi-day events compound this: a 3-day festival does not need 3 times the units, but it does need daily service, not once-a-week service, since ANSI/PSAI Z4.3 sets the weekly baseline for steady office-style use, not a weekend crowd cycling through units for 10 hours straight. If your event runs Friday through Sunday near Old Settlers Park or a similar Round Rock venue, factor servicing into the quote up front. Our event restroom rental page breaks down service intervals for multi-day bookings, and golf tournament restrooms and marathon and race restrooms cover the spread-out, walk-to-station scenarios that don't fit a simple headcount table.
Toilets and dumpsters get ordered together more often than not, so the sizing question comes up fast. A 10 yard dumpster holds about 10 cubic yards, roughly 270 cubic feet, which answers how many cubic feet are in a 10 yard dumpster, and it runs about 12 feet long on the ground, which answers how many feet a 10 yard dumpster measures, making it the right call for a bathroom remodel or small cleanout. A 20 yard dumpster holds around 540 cubic feet, and that answers how many cubic feet in a 20 yard dumpster, and it runs closer to 20 feet, and it typically takes 3 to 4 tons of debris before you're pushing weight limits, which is how many tons a 20 yard dumpster holds on a mixed load. A 30 yard dumpster holds about 810 cubic feet and can carry up to roughly 5 to 6 tons depending on what's inside, which is how many tons a 30 yard dumpster can hold on a typical job, and wood versus shingles versus concrete debris hits weight limits very differently. A 40 yard dumpster tops out near 1,080 cubic feet, which is how many cubic feet a 40 yard dumpster holds, and can carry 6 to 8 tons on a mixed construction load, answering how many tons a 40 yard dumpster holds. Weight always matters more than volume with heavy debris, since you can hit the ton limit long before the box looks full. Our dumpster sizes and dimensions page has the full breakdown, and dumpster weight limits explains what pushes a load over. If you're not sure between two sizes, 20 yard dumpster rental and 30 yard dumpster rental are the two most commonly ordered for home renovation jobs around Round Rock.
Pricing scales with unit type and how long you keep it. A standard unit runs in the $100 to $350 range per day depending on delivery and service needs, while a full week typically lands between $130 and $500. Monthly rentals for ongoing job sites run $125 to $325 a month, which is the better deal per day for anything past two weeks.
| Unit | Day | Week | Month |
|---|---|---|---|
| Standard | $100-$350 | $130-$500 | $125-$325 |
| ADA accessible | $200-$400 | - | - |
| Deluxe flushable | $85-$1200 | $150-$290 | - |
Delivery fees run separately, typically $100 to $500 for a day rental and $50 to $150 for a weekly booking. See porta potty rental cost for the full pricing picture, porta potty rental per day if you're renting for a single weekend job, and monthly porta potty rental if the job runs long.
A job running longer than two weeks needs the same headcount math as day one, but service frequency becomes the real variable. ANSI/PSAI Z4.3 sets a baseline of one service visit per week for up to 10 users across a standard 40 hour week, so a 20-person crew working 5 days a week fits comfortably on that schedule with two units. Push the crew to 6-day weeks or add a second shift, and you're better off adding a unit rather than doubling up service visits, since queuing at breaks costs more in lost time than an extra rental costs in dollars. Sites near Hutto or Brushy Creek job sites, both within a short drive of central Round Rock, often start with a two-unit order and add a third once framing crews and finish crews overlap. Our porta potty rental checklist walks through timing that add-on before the site gets crowded, and construction dumpster rental covers pairing debris removal with the same schedule.
Placement affects how many units you actually need, because a poorly placed unit gets skipped and a well placed one gets used evenly. ADA Standards 405.2 caps ramp slope at 1:12 for any accessible unit needing a ramp, and the ground under any unit should meet ADA Standards 302.1's requirement for stable, firm, slip-resistant surface, gravel and packed dirt both qualify if compacted. Keep a roll-off's drop zone in mind too: delivery trucks need about 60 feet of straight clearance behind the truck, so don't cluster toilets in that lane. If placement will sit in a public right of way anywhere in Round Rock, confirm with the city before delivery day, since we have not verified a blanket rule allowing it. Our porta potty placement guide covers ground surface and clearance in more detail, and porta potty permit requirements is the place to start that city conversation early.
Two standard units for a 4 hour event, three if alcohol is served or the event runs past 6 hours. Add one accessible unit under ADA Standards 213.2 regardless of headcount, since the rule requires at least one even for smaller clusters.
Plan one unit per 50 guests for a 4 to 5 hour reception, plus one ADA unit. A 150-guest wedding with an open bar should round up to four units instead of three to keep lines short during toasts and dancing.
Roughly 5 to 6 tons for mixed construction debris, though heavier material like concrete or shingles hits that limit faster. Check dumpster weight limits before loading anything dense, since overage fees apply past the ton limit.
About 540 cubic feet, and the box runs close to 20 feet long on the ground. See dumpster sizes and dimensions for full length, width and height specs.
Yes, if your crew is 20 workers or fewer, per OSHA 1926.51(c). Once you cross 20 workers you need a second seat plus urinal capacity, so recount anytime the crew grows mid-project.
Yes. ADA Standards 213.2 requires at least one accessible unit any time units are clustered, with no exception for small guest counts. Budget for it from the first quote rather than adding it later.
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