Technical Booklet H Stairs Ramps Guarding and Protection from Impact·Page 37·Table 4.1
Table 4.1 - Maximum length and rise of ramps
This table specifies the maximum ramp length in metres and maximum rise in millimetres for each gradient ratio from 1:20 to 1:12.
Table 4.1 Maximum length and rise of ramps
Gradient of ramp | Maximum length of ramp (m) | Maximum rise of ramp (mm)
1:20 | 10 | 500
1:19 | 9 | 474
1:18 | 8 | 444
1:17 | 7 | 412
1:16 | 6 | 375
1:15 | 5 | 333
1:14 | 4 | 286
1:13 | 3 | 231
1:12 | 2 | 166
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