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

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3.9.7. Putlogs: Putlogs supporting the platform shall:
(a)  be fixed in a greater vertical dimension;
(b)  be sufficiently long so they extend at least 75 mm beyond the braces of the inside and outside rows of uprights; and
(c)  be attached to the main structure by one end if they have a single row of uprights. They shall be embedded at least 100 mm in the masonry.
R.R.Q., 1981, c. S-2.1, r. 6, s. 3.9.7; 640-2019O.C. 640-2019, s. 3.
3.9.7. Putlogs: Putlogs supporting the platform shall:
(a)  be fixed in a greater vertical dimension; and
(b)  be sufficiently long so they extend at least 75 mm beyond the braces of the inside and outside rows of uprights.
R.R.Q., 1981, c. S-2.1, r. 6, s. 3.9.7.