AS 1428.1-2009 PWD Code

                                                 47                                 AS 1428.1—2009



      (f)    At the nosing, each tread shall have a strip not less than 50 mm and not more
             than 75 mm deep across the full width of the path of travel. The strip may be
             set back a maximum of 15 mm from the front of the nosing. The strip shall
             have a minimum luminance contrast of 30% to the background. Where the
             luminous contrasting strip is affixed to the surface of the tread, any change in
             level shall comply with Clause 7.2 and Clause 7.3.
      (g)    Where the luminance contrasting strip is not set back from the front of the
             nosing then any area of luminance contrast shall not extend down the riser
             more than 10 mm.
      (h)    TGSIs shall be installed in accordance with AS 1428.4.1.




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