Tread for steel fixed ladders
  • Jeanne
    0
    Morning all, does anyone happen to know if there is a requirement for the tread/depth that a fixed steel ladder must be? We have an old one that has rungs that are fairly easy to slip off, and are welding new treads on to it, just not sure if there is a minimum depth the tread/plate needs to be for this kind of ladder, cheers
    Jeanne Options
  • Andrew
    405
    Min. 20mm round bar.
    Andrew Options
  • Jeanne
    0
    Thanks Andrew. That's actually what we had but were advised by a WorkSafe inspector that we had to change them to a flat surface.
    Jeanne Options
  • Andrew
    405
    I don't have the Standard (jeez - who can afford those!!!!!!) but as I recall its 20mm round or you can go flat but the external dimension needs to be equivalent to min. 20mm
    Andrew Options
  • Bruce Tollan
    32
    Try NZS/AS 1657:1992. sorry we don't have a copy
    Bruce Tollan Options
  • Andrew
    405
    Heres a nice free picture taken from the Compliance Document for
    New Zealand Building Code Clause D1 Access Routes – Second Edition 2011 version - which looks like the latest.
    Attachment
    07-Dec-18 11-20-01 AM (146K)
    Andrew Options
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