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.