3.15.2. Adjoining structure: Where there is any danger that the proposed digging might affect the stability of the adjoining structures and thus threaten the safety of workers, an adequate method of shoring or a sub-structure shall be provided, and a copy of the plans and specifications of such works shall be kept on the site.
R.R.Q., 1981, c. S-2.1, r. 6, s. 3.15.2; O.C. 807-92, s. 10.