You need at least one accessible unit per cluster of portable restrooms, and never fewer than one, per ADA Standards section 213.2. That rule holds whether you have 3 units on a driveway job in Louisville or 30 at a festival. Louisville Porta Pros builds every order around that minimum.
Size and clearance, mostly. ADA Standards section 304.3.1 calls for a 60 inch turning circle inside the unit, which is why an ADA accessible porta potty is built noticeably bigger than a standard porta potty rental. The door has to open at least 32 inches clear per section 404.2.3, and the path leading to it needs 36 inches of clear width under section 403.5.1. Ground has to be stable and slip resistant under section 302.1, so gravel or soft turf near a Louisville job site sometimes needs a mat or a pad before placement. Grab bars, a lower sink, and hardware you can operate one-handed with under 5 pounds of force, per section 309.4, round out the build. None of this is optional trim. If your site has any portable restrooms at all, one of them has to meet this spec, and it has to sit on the same accessible path as everything else. Check the porta potty placement guide before you set delivery day, because a unit that meets every ADA spec still fails if the route to it is blocked by mud or curb.
One is the floor, not the ceiling. ADA Standards section 213.2 sets the baseline at 5 percent of a cluster, rounded up, with one unit minimum no matter how small the order. A 2 unit delivery still needs one accessible stall. A 20 unit festival order needs at least one, and likely more once you're past that 5 percent line. This runs alongside OSHA 1926.51(c), which sets toilet counts by crew size on construction sites: one facility for 20 workers or fewer, then one seat and one urinal per 40 workers as the crew grows past that. The two rules solve different problems. OSHA is about enough toilets for the headcount. ADA is about making sure someone using a wheelchair or a walker in Louisville can actually reach and use one of them. Run both numbers before you order. The how many porta potties do I need guide walks through the math, and the OSHA portable toilet requirements page breaks the crew-size table down further.
On the same firm, level path as every other unit, close enough to reach without crossing a hazard. Section 302.1 wants stable, slip resistant ground under the whole route, not just under the unit itself. That matters on a lot of Louisville sites where the flat pad is 20 or 30 feet from where the trucks park. If your event sits near Parkway Village, about 1.4 miles south of downtown, or out toward Audubon Park, 1.7 miles southeast, plan the accessible unit placement before delivery day rather than after. A ramp into any elevated unit can't run steeper than 1:12 under section 405.2, so a curb or a slope on site can force the delivery crew to reposition the whole cluster. For events with paid tickets or reserved seating, ADA accessible porta potty placement near the accessible parking or accessible seating block is usually the right call. Weddings and other single-day bookings covered on the event restroom rental and wedding restroom rental pages carry the same placement rule, just at a smaller scale.
Yes, and the trailer version usually solves it more cleanly than a cluster of single units. A restroom trailer rental with an ADA stall built in gives you the 60 inch turning circle, the 32 inch door, and the lower reach range under section 308.2.1 (48 inches max, 15 inches min) inside one climate controlled space, instead of a separate unit sitting apart from the rest. That's often the simpler answer for a 2 stall restroom trailer or 4 stall restroom trailer booking where space on site is tight. Bigger bookings, like an 8 stall restroom trailer for a multi-day event, still need that same one-accessible-stall minimum worked into the layout. If you're pricing this out, the restroom trailer rental cost page has the range, and it's worth comparing against a mixed order of portable restroom rental units before you commit either way.
Yes, if there's more than one unit or the event is open to the public. Section 213.2 sets a one-unit minimum regardless of cluster size. A single-user job site with one crew member might skip it, but any public-facing job in Louisville should default to including one. Confirm with request a quote before delivery.
60 inches in diameter, per ADA Standards section 304.3.1. That's enough room for a wheelchair to turn fully around inside the stall. Standard units don't come close to that footprint, which is why ADA models are built on a separate, larger chassis than a porta john rental.
Yes, that's the normal setup. Most Louisville orders run several standard units plus one or more ADA units on the same pad, connected by the same accessible path. The porta potty rental cost page shows how pricing splits between unit types.
Often yes, separate from the OSHA 1926.51(c) headcount rule. ADA accessibility isn't tied to crew size the way toilet counts are. If the public or visiting inspectors could access the site, plan for at least one accessible unit regardless of how few workers are on site day to day.
Generally yes. A trailer with a built-in ADA stall handles the door width, turning circle, and reach ranges inside one enclosed unit. Compare that against ordering a separate accessible porta potty by checking the portable toilet rental options against trailer availability for your date.
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