TGD M 2010 – 1.3.4.4 – Internal ramps

1.3.4.4 Internal ramps If a change in level is unavoidable within a storey a gentle slope should be provided (refer to 1.3.3.3 (d)). Where this is not possible and the change in level is 300 mm or more, two or more clearly defined steps (in accordance with 1.3.4.2) identifiable by means of visual contrast (refer to 1.6.4) should be provided in addition to a ramp. A ramp is defined as a gradient of 1:20 or steeper. Limits for ramp gradient and flight length are defined in Table 1. Where the change in level is not greater than 300 mm, a ramp alone is sufficient. Where an internal ramp is provided (a) it should comply with guidance given for external ramped access routes in 1.1.3.4; (b) it should be easy to locate or clearly sign-posted; (c) it should have no flight with a going greater than 10 m or a rise of more than 500 mm (refer to Table 1 and Diagram 3). (d) where the area beneath a ramp has a soffit height less than 2100 mm above floor level, it should be protected by either enclosure, guarding and low level cane detection or a permanent barrier giving the same degree of protection.

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