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Plumber Red Seal · Question

A plumber is installing a wall-mounted lavatory in a public washroom that must comply with barrier-free requirements. What is the maximum height, from the finished floor to the top of the lavatory rim, permitted by code?

Barrier-free design guidelines, such as those found in the National Plumbing Code of Canada (NPC), typically specify a maximum height of 838 mm (33 inches) from

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Question: A plumber is installing a wall-mounted lavatory in a public washroom that must comply with barrier-free requirements. What is the maximum height, from the finished floor to the top of the lavatory rim, permitted by code?

Answer options:

  • 810 mm ✅ 838 mm
  • 865 mm
  • 915 mm

Correct answer: 838 mm

Explanation: Barrier-free design guidelines, such as those found in the National Plumbing Code of Canada (NPC), typically specify a maximum height of 838 mm (33 inches) from the finished floor to the top of the lavatory rim to ensure accessibility for individuals using wheelchairs. Options A, C, and D are not standard maximum heights.

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