The nice thing about a stiff beam is that it won’t sag much. The not-so-nice thing is that it won’t `give’. In new construction, wood framing more or less starts from the ground up; wood members are placed on top …

Jamming Jack Studs Read more »

The modulus of elasticity (MOE, E) of wood is most commonly used in the calculation of deflections (sag) of wood beams. By `beams’ I include joists, rafters, girders, decking boards, any … wood used structurally to support loads across spans …

E (modulus of elasticity) of Wood Read more »

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 »

(c) Jeff R. Filler, Pell City, April 2023 `Components and Cladding’ … or C & C or `see and see’. In earlier posts we looked at the Main Wind Force Resisting System (MWFRS) wind forces on a couple buildings, specifically, …

C & C Read more »

(c) Jeff R. Filler, Pell City, April 2023 In earlier posts we looked at the `main’, or `overall’, wind forces on a rather low, wide `shop’ (here and here), and on a relatively narrower and taller `house’ (here).  Specifically, we …

`Corners’ Read more »

In our earlier posts we determined the horizontal and vertical components of wind load on a `shop’ (here). The horizontal force was/is 500 lb, as acting on an 8-ft wide `swath’ of shop, which is framed with wood trusses at …

Minimum Design Wind Load – ASCE 7-22 Section 28.3.6 (Envelope Procedure) Read more »

Now let’s look at the wind loading on the shop eaves. We ignored them previously, as we were getting `big picture’ wind loads on the building as a whole … or at least an 8-ft `swath’ of building, as a …

Wind Load on Shop Eaves – ASCE 7-22 – Envelope Procedure – MWFRS Read more »

(c) Jeff R. Filler, Pell City, April 2023 In previous examples (here and here) we looked at the horizontal and vertical wind forces on a `shop’. The shop is/was a `pretend’ structure in a real location, Latah County, Idaho. It …

Wind Forces on a House (Compared to a `Shop’) – ASCE 7-22 – MWFRS – Envelope Procedure Read more »

In an earlier example (here) we looked at the total horizontal force acting on an 8-foot `swath’ of a shop building, the idea being that the shop is supported by trusses on posts at 8 foot (ft) on center (o.c.), …

Wind Load on a Shop – Envelope Procedure – Part 3 – Vertical (Uplift) Forces Read more »

Let’s look at a post, say in a shop, or a barn, acting as a vertical cantilever. This means that the base of the post is held rigid (not allowed to rotate), while a lateral (horizontal, or sideways) load is …

Cantilever Post Deflection (Post and Bracket) Read more »