S-2.1, r. 4 - Safety Code for the construction industry

Full text
3.9.9. Scaffolding assemblies: Scaffolding assemblies shall be performed in the following manner:
(a)  if nails are used, they shall:
i.  be of a length and size appropriate to the thickness of the assembled pieces;
ii.  be sufficiently numerous in relation to the weight being supported;
iii.  not be subject to a drawing effect;
iv.  be completely driven in, except for double-headed nails in which case the first head shall be completely driven in;
v.  have their points flattened should they extend beyond the exterior surface of the last piece assembled; and
vi.  be pulled out of any dismantled wood;
(b)  when nuts are used, wrenches shall be:
i.  the appropriate size, to avoid sliding on the head of the nut;
ii.  such that while tightening, the elasticity limit of the metal with which the nut is made is not exceeded; and
iii.  equipped with a strap to enable the workmen to suspend them from his wrist or belt;
(c)  when devices such as clamps or metallic points are utilized, these devices shall:
i.  be specially designed for this purpose; and
ii.  be so fixed as not to slip under the pressure brought to bear upon them.
R.R.Q., 1981, c. S-2.1, r. 6, s. 3.9.9.