AS 1657:2018 pdf free
AS 1657:2018 pdf free.Fixed platforms, walkways, stairways and ladders – Design, construction and installation
Except where otherwise specified in this Standard, design loadings shall be in accordance with AS/NZS 1170.1. Where loading due to wind or snow is foreseen, provision shall be made for the design loadings of AS/NZS 1170.2 and AS/NZS 1170.3 respectively.
Reference shall be made to AS/NZS 1170.0 for appropriate load factors and combinations of actions to determine the design actions (sce Notes 3 and 4).
NOTES:
1 For wind and snow loadings, the design for serviceability limit states is not required by this Standard.
2 Imposed actions for particular means of access are specified in the relevant sections of this Standard for that means of access.
3 Loads given in this Standard are the minimum imposed actions.
4 Destructive testing for ultimate strength requires the imposed actions specified in this Standard to be multiplied by the appropriate load factor in AS/NZS 1170.0 for design action effect, and again by a further factor for test load from that Standard.
I1 is very important for designers and specifiers to note that the issue of slip resistance should be addressed to ensure the risk of slipping is minimized, and the treatment needs to be in accordance with the likely use of the installation, especially in locations where material build-up, oils and liquids may be present, where users ‘ shoes may have slip- inducing material on them and where sloping surfaces may exist. Additionally, some grid-style flooring has superior grip in one direction to that at 90*,which also needs to be considered when selecting products. Designers are advised to take account of such issues when selecting flooring materials and to ensure a comparison is made between products before a final decision is made (see also Clause 4.3).
Where the difference in height between adjacent walkways, platforms or landings is greater than 300 mm but does not exceed 450 mm, a minimum of one intermediate step shall be provided.
Where the difference in height is 300 mm or less, access from one to the other may be gained without the provision of an intermediate step.AS 1657 pdf free.
