Grade Marking

(1)  Lumber for joists, rafters, trusses and beams and for the uses listed in Table 9.3.2.1. shall be identified by a grade stamp to indicate its grade as determined by the NLGA, “Standard Grading Rules for Canadian Lumber”.

Article 9.3.2.1 Ontario Regulation 332/12 Building Code,   Information published by oncodes.ca for educational purposes only.