Technical requirements for safety in metal scaffolding Appendix – Boards and planks in working platforms, gangways and runs

3. Boards and planks in working platforms, gangways and runs

Every board or plank forming part of a working platform, gangway or run shall

(a)    be of sound construction, adequate strength and free from patent

defect;

(b)     be of a thickness capable of affording adequate security having regard to the distance between the supports and be not less than

200 millimetres in width and not less than 25 millimetres in thickness or not less than 150 millimetres in width when the board or plank exceeds

50 millimetres in thickness;

(c)    not  protrude  beyond  its  end  support  to  a  distance  exceeding

150 millimetres unless it is sufficiently secured to prevent tipping;

(d)    rest securely and evenly on its supports; and

(e)     rest on at least 3 supports unless, taking into account the distance between the supports and the thickness of the board or plank the conditions are such as to prevent undue or unequal sagging.