Maximum Spans for Steel Beams Supporting Floors in Dwelling Units Table 9.23.4.3.Forming Part of Sentence 9.23.4.3.(1) Table 9.23.4.3. Ontario Regulation 332/12 Building Code, Information published by oncodes.ca for educational purposes only. Similar articles Maximum Spans for Glue-Laminated Floor Beams – 20f-E Grade(1) Support of Tail and Header Joists Size of Wall Plates Floor Framing