![]() So in a perfect world, even the shortest sensor flush valve I could find has a 1/8-inch clearance conflict with the ADA. Looking at the grab bar, 36 inches less the 2-inch diameter and 1-1/2-inch clearance gives you 32-1/2 inches. I would bet my paycheck that the valve interferes with the 1-1/2-inch clearance requirement at the grab bar.Įven with the shortest valve of those mentioned, adding the 16-1/8 inches plus the 16-1/2 inches fixture height gives you 32-5/8 inches. The Toto product lists no dimension to the top of the valve, but it has an installation note about mounting the grab bar at the maximum 36 inches or using a split grab bar for ADA installations. Of the sensor operated flush valves I have researched, Sloan’s product is 16-1/2 inches tall, American Standard’s is 16-1/8 inches tall, and Zurn’s is 16-3/8 inches tall. If you add up the dimensions, the typical wall mounted ADA water closet is installed with the rim at 16-1/2 inches, and floor mounted ADA water closets are also 16-1/2 inches tall to ensure that the seat is at least 17 inches above the floor – the ADA minimum. All of the ADA flush valves had to be replaced with a shorter model to resolve the issue. On one recent project all of the ADA flush valves had a fractional interference with the grab bar clearance ranging between 1/8 and ¾ inch. ![]() As of late, projects have ADA specialists who check clearances for all the ADA elements before project closeout – another niche industry adding complexity, cost, and frustration to the construction process. This is where the fun begins.įor some reason I have been specifying (and my company has been installing) ADA sensor operated water closet flush valves and no problems have arisen - unless there was a physical conflict with the grab bar. The grab bar is 2 inches in diameter and has a requirement of 1-1/2-inch clearance all around. The height requirement for ADA grab bars is 33 to 36 inches measured from the floor to the top of the grab bar, not the centerline. Meanwhile, the criteria for ADA water closets has changed – or at least the enforcement of it has. Today, of course, sensor operated flush valves are the norm for commercial installations – either battery operated or hard wired. This was back in the day when manual flush valves were the norm. Years ago, I learned a lesson that you can’t have a flush valve tailpiece trap primer on an ADA water closet because it raises the height of the flush valve and causes a conflict with the ADA grab bar.
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