wood truss floor diaphragm boundary element
wood truss floor diaphragm boundary element
(OP)
If you have a wood diaphragm comprised of wood floor trusses bearing on an intermediate stud bearing wall, how and what is engineered as your diaphragm boundary element? See attached detail. Thanks






RE: wood truss floor diaphragm boundary element
RE: wood truss floor diaphragm boundary element
RE: wood truss floor diaphragm boundary element
Mike McCann
MMC Engineering
RE: wood truss floor diaphragm boundary element
For the case that you have attached I don't think that this interior/intermediate wall would be part of a chord member (taking compression and tension). It may be an intermediate shear wall in which it would need to take shear from the diaphragm in which case I would think blocking without strapping would be ok. However because the plywood deck is continuous over the intermediate wall the tension and compression cord members will be at the exterior walls (or where the plywood is discontinuous) in which case you would need a strap/blocking or rim board.
EIT
RE: wood truss floor diaphragm boundary element
If the detail was at the juncture of a drag collector extending to the shear wall and in a seismic zone, blocking with strapping will be required.
If only wind, then, generally only the blocking, unless there is a huge suction force on the leeward wall.
Mike McCann
MMC Engineering
RE: wood truss floor diaphragm boundary element
Are you talking about chord members or boundary elements of a intermediate diaphragm panel?