This standard BS 2482:2009 Specification for timber scaffold boards is classified in these ICS categories:
91.220 Construction equipment
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:
two grades for 38 mm thick scaffold boards, as follows:
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;
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.
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 information on support centres.