Architectural · A-3QJ3M

Accessible Lavatory Knee Clearance and Piping Insulation

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An accessible lavatory installation requires specific knee and toe clearances measured from the finished floor. The knee clearance demands a minimum nine-inch toe clearance height, a twenty-seven-inch minimum knee clearance height, and an eight-inch minimum knee depth at the twenty-seven-inch height. Additional dimensions govern the rim height at thirty-four inches maximum and overall clearances for wheelchair access. Hot water supply and drain pipes within the clearance zone must be insulated to protect users from burns. Faucet controls and operating mechanisms must be operable with one hand without tight grasping, pinching, or twisting of the wrist, requiring no greater than five pounds of force.

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