It's been up for 20 years, so it's obviously holding.but I sure wouldn't let my kids play underneath it with any type of load up there. I'm not any type of structural engineer, but it would be a cold day in.well.you know ) before I relied on the shear strength of two fasteners two cary a two span load.especially when that load is circumference focused down into long grain (bottom most edge of the bolts) into non cross-reinforced timber. (1) Except as required in Sentence (2) and Article 9.23.13.10. Anything more than a couple 2x12' or 12" LVL would be a waste of wood carrying a 4' span in my opinion.īill RWait.so the load on that beam AND the other double 2X10 is being carried entirely by the two (what appear to be 1/4") face lags evident in the picture? ago 5 ply 2x12 was all that was required to hold up your house with a 22' span and an allowance for a 2.5" sag. Ontario Regulation 332/12 Building Code, Information published by oncodes.ca for educational purposes only. storeys number of storeys supported by the footing. sjs the sum of the supported joist spans on each storey whose load is transferred to the footing, and. Not that I'm recomending 2x10's but this may give you some indication of what you'd feel comfortable building. The Ontario Building Code Basic Footing Widths and Areas 9.15.3.4. or so no sign of sagging and has loaded many times with more than 50# psf. of a double 2x10 - 16' beam carrying a double 2x10 -16' beam in the center with an 8' span of 2圆 covered with 5/8" ply. This new edition of The Span Book includes added tables for deck joists and beams, more lintel options, and recalculates all spans using revised shear properties.