Page 48 - Dubai Universal Design Code
P. 48

5.8.  Stairs


               Stairs should include as many accessible elements as possible.


               5.8.1.      Steps


               Steps shall the following characteristics:

               1.  Rises shall have a maximum height between 150 mm and 176 mm.


               2.  In straight flights, the dimension of the stair tread must be between 300 mm and 340
                   mm.

               3.  The rise R and tread T must meet the following relation: 650 mm < 2R + T < 700
                   mm.


               4.  Curved stairs should be avoided.

               5.  No open risers or discontinued treads are allowed.

































                                         Figure 19. Open risers are not permitted

               6.  The run of a step is the dimension measured from the edge of the nosing of a tread
                   to the vertical projection of the nosing of the next step.








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