89th Edition, June 30, 1989
Wood stairs - Part 1: Specification for stairs with closed risers for domestic use, including straight and winder flights and quarter or half landings
Includes all amendments and changes through Reaffirmation Notice , September 2, 2013
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Description / Abstract:
Includes plywood risers and treads, edge-to-edge jointed timber and glue-laminated wood components. Recommendations for fixing stairs on site and for the design of stairs with winder flights. Open risers, stairs wider than 122 mm and flights having a total going exceeding 3800 mm are excluded.