BS 2482:2009 pdf free.Specification for timber scaffold boards.
BS 2482 This British Standard specifies requirements for timber scaffold boards with a width of 225 mm and a thickness of either 38 mm or 63 mm.
It covers board sizing, board construction, and timber quality and grading, for which it specifies:
a) two grades for 38 mm thick scaffold boards, as follows:
1) 1.2 m support centre — a grade that is suitable for support at centres up to 1.2 m, which may be selected by visual or machine strength grading;
2) 1.5 m support centre — a grade that is suitable for support at centres up to 1.5 m, which may only be selected by machine strength grading.
b) a single grade for 63 mm thick scaffold boards that is suitable for support at centres up to 2.5 m, which may be selected by visual or machine strength grading.
This British Standard does not cover laminated or finger-jointed scaffold boards.
NOTE Annex A provides information on performance characteristics. Annex B provides in formation on support centres.
Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
BS 1706, Method for specifying electroplated coatings of zinc and cadmium on iron and steel
BS 4978, Specification for visual strength grading of softwood BS 6100-4. Glossary of building and civil engineering terms – Part 4:
Forest products.
BS 6338, Specification for chromate conversion coatings on electroplated zinc and cadmium coatings.
BS EN 10143. Continuously hot-dip coated steel sheet and strip — Tolerances on dimensions and shape.
End bands shall be made from zinc-coated mild steel conforming to BS EN 10143, with a thickness of not less than 0.6 mm. The width of the end bands shall be not less than 20 mm and not greater than the thickness of the board. They shall extend for a minimum of 150 mm along the edge of the board.
The end bands shall be secured to the edge of the board along each side with:
a) not fewer than two 30 mm x 3.0 mm clout nails, galvanized in accordance with BS 1706 or zinc-plated and chromateconversion-coated in accordance with BS 6338; or
b) not fewer than two 1.8 mm wire x 11.3 mm crown x 30 mm long staples, galvanized to 85 6338 or made from stainless steel.
NOTE 1 When using staples to secure the end band to the board, the crowns of the staples should be fitted perpendicular to the edge of the board.BS 2482 pdf download.