Diaphragm Chord in Deep Bottom Bearing Wood Trusses
Diaphragm Chord in Deep Bottom Bearing Wood Trusses
(OP)
Does anyone have any good ideas about providing a wood diaphragm chord in 3'-8" deep bottom bearing parallel chord wood trusses on a stud bearing wall? I normally design the stud wall top plate for this force, but am not happy with OSB diaphragm tension and compression forces going through the OSB wall sheathing to get into the top plate that is > 3'-8" away. Detailing a double top plate up near the diaphragm boundary seems better, but this does not look easy to build.
Also, does the permanent end bracing for such a system want to be wood or strap x-bracing? I know this is the truss manufacturer's deal, but would appreciate any comments here. Thanks in advance. Eric
Also, does the permanent end bracing for such a system want to be wood or strap x-bracing? I know this is the truss manufacturer's deal, but would appreciate any comments here. Thanks in advance. Eric






RE: Diaphragm Chord in Deep Bottom Bearing Wood Trusses
DaveAtkins
RE: Diaphragm Chord in Deep Bottom Bearing Wood Trusses
RE: Diaphragm Chord in Deep Bottom Bearing Wood Trusses
Regarding permanent end bracing, that is usually the responsibility of the building designer, not the truss designer, according to the "Commentary for Permanent Bracing of Metal Plate Connected Wood Trusses", by the WTCA. The truss designer has to indicate where individual truss members need to be braced.
RE: Diaphragm Chord in Deep Bottom Bearing Wood Trusses
Check past postings on the wood section of this forum, I think your question has came up several times before.