E (E and shear-free E) (c) Jeff R. Filler, 2022 The deflections calculated in earlier examples (link and link) are based on the standard engineering formula for beams based on beam-curvature theory – where the beam curvature is a result …

Shear-Free Eeee Read more »

In the example (here) I discussed a person standing on a wood plank, and `examining’ the deflection. Talk is cheap. I grabbed three pieces of lumber (that I milled) in my shop: one piece a 1 x 5 Southern Pine …

Case(s) in Point Read more »

`E app’ E app (`Eee app’, `Eee apparent’, Apparent Modulus of Elasticity) is a design property for wood construction. It comes from the Modulus of Elasticity of the wood (E, MOE, Young’s Modulus). It’s not a `true’, or `pure’ property, …

E app (Apparent Modulus of Elasticity) Read more »

As an engineer I tend to design structures from the top down. First the roof loads, which determine rafters, or trusses, or whatever roof framing members. Then the beams/headers/girders supporting the rafters, then the columns or walls supporting the headers, …

… and now for the headers Read more »

Designing a roof rafter … (bending stress) … Linda wants a barn-shelter for her goats. Okay – I’ll do it. `Twelve by twenty-four.’ `Let’s go walk the site. It’s got some slope. I’ll make a stepped-barn, each section will be …

roof rafter calcs … BENDING STRESS Read more »