FASTENING MULTI PLY WOOD BEAMS
FASTENING MULTI PLY WOOD BEAMS
(OP)
When a multi ply wood beam is loaded on its top flange, how does one go about determining the fastening of the plies. I think that when it is top loaded you can assume that all three plies receive equal load and thus do not have to worry about transferring shear forces across the vertical plane of the plies. Do you look at horizontal shear as the controlling factor? Thanks in advance.





RE: FASTENING MULTI PLY WOOD BEAMS
RE: FASTENING MULTI PLY WOOD BEAMS
RE: FASTENING MULTI PLY WOOD BEAMS
V=max shear
I=moment of Inertia of the composite section
t=thickness at location of joint
Q=(y')*(A') where A' is the area of the segment being connected to the beam and y' is the distance from the neutral axis of the composite section to the centroid of the connected part. This is probably explained a little better in a mechanics of materials textbook (look up shear flow for a more precise definition of Q)
RE: FASTENING MULTI PLY WOOD BEAMS
RE: FASTENING MULTI PLY WOOD BEAMS
I would just provide a nominal fastening (maybe 1/2" diameter bolts at 16"-24" o.c.) to help ensure they deflect together.
RE: FASTENING MULTI PLY WOOD BEAMS
RE: FASTENING MULTI PLY WOOD BEAMS