Code of Massachusetts Regulations
521 CMR - Architectural Access Board
Title 521 CMR 29 - FLOOR SURFACES
Section 29.2 - LEVEL CHANGES
Universal Citation: 521 CMR 29 MA Code of Regs 29.2
Current through Register 1531, September 27, 2024
Ground and floor surfaces shall be of a common level throughout, except for the following permitted changes in level.
29.2.1 Changes in level up to and including 1/4 inch (1/4" = 6mm) may be vertical and without edge treatment. See Fig. 29a.
29.2.2 Changes in level greater than 1/4 inch (1/4" = 6mm) and less than 1/2 inch (1/2" = 13mm) shall be beveled with a slope no greater than one-in-two (1:2) (50%). See Fig. 29a.
29.2.3 Changes in level greater than 1/2 inch (1/2" = 13mm) are not allowed unless a ramp, walkway, or means of vertical access complying with 521 CMR is provided.
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