AS 1428.1-2009 PWD Code

AS 1428.1—2009                                       46




                                  FIGURE 25(D) DOORWAYS AT LANDINGS


       11 STAIRWAYS
       11.1 Stair construction
       Where required, stairs shall be constructed as follows:
       (a)    Where the intersection is at the property boundary, the stair shall be set back
              by a minimum of 900 mm so that the handrail (complying with Clause 12) and
              TGSIs do not protrude into the transverse path of travel, as shown in
              Figure 26(A).
       (b)    Where the intersection is at an internal corridor, the stair shall be set back in
              accordance with Figure 26(B).
              NOTE: Examples of stair handrail terminations are given in Figures 26(C) and 26(D).
       (c)    Stairs shall have opaque risers.
       (d)    Stair nosings shall not project beyond the face of the riser and the riser may
              be vertical or have a splay backwards up to a maximum 25 mm, as shown in
              Figures 27(A) and 27(B).
       (e)    Stair nosing profiles shall—
              (i)       have a sharp intersection;
              (ii)      be rounded up to 5 mm radius; or
              (iii)     be chamfered up to 5 mm × 5 mm.
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