6 x 6 sawn post vs 3-ply 2 x 6
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, …
Tag: wood
Shear Deflection – Prefab Wood I-Joist
Shear Deflection – Prefab Wood I-Joist Example Calc (c) Jeff R. Filler, Pell City, 2022 Continuing our discussion on shear deflection of wood beams (joists, etc.), let’s look at a prefabricated wood I-joists. Basic design information for prefabricated wood I-joists …
E min
E min (c) Jeff R. Filler, Pell City, Alabama, 2022 But First, E apparent and E true `E min’ is calculated wood property used in the design of structural wood members (beams, columns, etc.). It is a derived property, derived …
Accuracy of Deflection Calcs (and Eee)
Deflections and Average Modulus of Elasticity (c) Jeff R. Filler, 2022 A word on the accuracy of deflection calculations … wood beams, joists, etc. In the example above (link) we calculated a deflection of 0.599 in. How accurate is this …
E app (Apparent Modulus of Elasticity)
`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, …
rafter check using the AWC Span Calculator
Now let’s check our roof rafter design. Recall that we (I) came up with 2×6 rough sawn (actual dims) stressed to 900 psi, which is probably doable in SP lumber, and likewise doable with 2×6 dimension lumber, but because the …
roof rafter calcs … BENDING STRESS
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 …
a truss for Miles
Miles asked me to design a truss for his shop. I grabbed my clipboard. Wood? Yes. Rough sawn? Yes. Rise/Run? 4/12. Width? 21 feet. (Hmmm … I am sketching as we go along.) Oh, 20. You mean 20 to center? …