AS 1428.1-2009 PWD Code

AS 1428.1—2009                                    52



       11.2 Stairway handrails
       Handrails shall be continuous throughout the stair flight and, where practicable,
       around landings (see Figure 28) and have no obstruction on or above up to a height
       of 600 mm and as follows:
       (a)    The design and construction of handrails shall comply with Clause 12.
       (b)    Handrails shall be installed on both sides of the stairs and as shown in
              Figures 26(A) and 26(B).
       (c)    Handrails shall have no vertical sections and shall follow the angle of the
              stairway nosings, as shown in Figure 28(b).
       (d)    Where a handrail terminates at the bottom of a flight of stairs, the handrail
              shall extend at least one tread depth parallel to the line of nosings plus
              minimum of 300 mm horizontally from the last riser (see Figure 28(b)).
       (e)    The handrail shall extend a minimum of 300 mm horizontally past the nosing
              on the top riser.
       (f)    Where the handrail is continuous, the 300 mm extension is not required in the
              inner handrail at intermediate landings as shown in Figure 28(a).
       (g)    The dimensions indicating the heights of handrails shall be taken vertically
              from the nosing of the tread to the top of the handrail or from the landing to
              the top of the handrail.


                         300 min.            One tread width




                               One
                               tread
                 B             width                                               B

                           1000 min.




                 A                                                                 A




                                                       One tread width      300 min.


                                                (a) Plan

                                       DIMENSIONS IN MILLIMETRES


             FIGURE 28 (in part) HANDRAILS TO STAIRS WITH INTERMEDIATE LANDINGS




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