Download Upgrade Raceived Tanaka. The revised Australian Standard AS1657 for fixed ladders, platforms and walkways released in October 2013 plugs some serious holes. Guard rails made of rubber, for example, are now explicitly unacceptable. While absurd, rubber guard rails technically complied with the 21-year-old AS1657 and the example shows just how sorely an. AS 1657—1992 Australian Standard Fixed platforms, walkways, stairways and ladders — Design, construction and installation First published as AS CA10-1938.

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