ADA 5 percent cluster rule
Also called: ADA percentage, accessible unit ratio
The ADA cluster rule is the provision in the 2010 ADA Standards for Accessible Design that, where multiple single-user portable toilets are clustered at one location, at least 5 percent of the units in each cluster must comply with the accessible toilet requirements and be identified with the International Symbol of Accessibility.
The rule applies per cluster, not per event. Ten clusters of four units each across a festival need an accessible unit in each cluster, not one accessible unit for the whole site. Rounding always goes up, so a cluster of one to twenty units needs one accessible unit.
The rule applies to places of public accommodation and government facilities. Private parties are not covered, but local permit offices often require accessible units for any event open to the public.
See also: ADA-compliant portable toilet, Cluster, Special event permit
Questions that use this term
Search allDo I need an ADA porta potty at my event, and how many?
Yes, you need at least one ADA-compliant portable toilet at your community 5K event. Your permit application specifies accessible units, and the ADA…
How to start a porta potty rental business: what you actually need before the first unit goes out
Starting a portable toilet rental business requires more than just buying a few units. You need a complete operational system before your first…
ADA (handicap) porta potty rental cost: why the accessible unit is priced differently ✓ Solved
An ADA-compliant portable toilet costs more to buy, maintain, and deliver than a standard unit, which drives the higher rental price. The ADA unit is…