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

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3.24.18. Beam-column connection of a multi-span steel structure: During beam-column connection work, a beam must not be supported by a spanner. The type of connection must be designed so as to take that prohibition into account.
The type of beam-column connection may be designed in one of the following manners:
(1)  the beam is attached to the column while being supported by a bracket previously attached to the column;
(2)  the upper right corner of the plate or angle seat is notched to clear the first supporting bolt of the beam placed previously in the manner specified in Schedule 6.
O.C. 391-2011, s. 2.