When we examine deflections of wood members (beams, joists, rafters, girders, etc.) we generally look at two kinds, actually three … the deflection due to the `live load’, e.g., people walking on a floor, wind on a wall, and so …

Deflections of Wood Beams Read more »

6 x 6 wood post versus 3-ply 2 x 6 © Jeff R. Filler, May 2022, Pell City (DRAFT) If you are an a professional engineer providing designs (or fixes) for wood-frame construction, sooner or later you will be asked, …

6 x 6 sawn post vs 3-ply 2 x 6 Read more »

Differential Deflections … and the Simpson Strong-Tie Strong-Drive® SDPW Deflector Screw (c) Jeff R. Filler, May 2022, Pell City, AL I haven’t tried one out yet … the Simpson Strong-Tie Strong-Drive® SDPW Deflector Screw … but the idea is fascinating …

Differential Displacements and the SST SDPW Deflector Screw Read more »

In the example above (link) we calculated a deflection of 0.599 in. How accurate is this number? (I showed it to three significant figures … accurate to half a percent?) Leaving out, for now, the accuracy/precision of the other input, …

Accuracy of Deflection Calcs (and Eee) Read more »