water and wood
water and wood
(OP)
i have a 70' bowstring truss with the 6x6 bottom chord split through the bolts from the heel past the first panel point. the truss supports a mech load above the 1st top chord panel point (1st in from the heel), and there is evidence of water on the underside of the sheathing in this area. the top chord consists of 4-2x6 flat, apparently nail laminated together.
with the break, the top chord has essentially 'lost it's curvature' over that 1st top chord panel point, ie. 'flattening out'.
can you help me understand and quantify the impact that water may have had on this scenario?
with the break, the top chord has essentially 'lost it's curvature' over that 1st top chord panel point, ie. 'flattening out'.
can you help me understand and quantify the impact that water may have had on this scenario?





RE: water and wood
RE: water and wood
Mike McCann
MMC Engineering
RE: water and wood
This sounds a lot like a DIY job. Carpenters building something without engineering assistance.
RE: water and wood
RE: water and wood
RE: water and wood
can you provide me with reference(s) for 30% number?
thanks
RE: water and wood
Attached is Chapter 4 from the Wood Handbook (public domain)that outlines such changes.
RE: water and wood
RE: water and wood