What is the maximum slope for a ramp in an existing business occupancy?

What is the maximum slope for a ramp in an existing business occupancy?
A . 1 in 8
B . 1 in 10
C . 1 in 12
D . 1 in 14

View Answer

Answer: C

Explanation:

The maximum allowable slope for ramps in existing buildings, including business occupancies, is specified in NFPA 101®, Life Safety Code®.

1 in 12 (C) corresponds to a slope of 8.3% (1 unit of vertical rise for every 12 units of horizontal distance). This is the maximum allowable slope for ramps to ensure accessibility and safety for all occupants, including individuals with disabilities.

Steeper slopes, such as 1 in 8 or 1 in 10, exceed the limits and pose accessibility and usability issues.

1 in 14 (D) would be a gentler slope, but it is not required for existing occupancies.

Reference: NFPA 101, Section 7.2.5.4: Ramp slope limitations for new and existing buildings.

ADA Guidelines: Also enforce a 1:12 slope for accessibility compliance.