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Hi, Found some old threads in a similar vein but none really answered my question. First of all this is in Canada so NBCC2020 applies. The deck is up at a ski hill and the snow load is 90+psf (GSL=160+). The occupancy live load is 40 psf. Can I ignore the 40 psf as the snow load is...

Thanks! I was literally just looking through the Simpson catalogue for this hanger (I forgot the model#). BTW, its actually THA422. The THJAs are hip/jack hangers.

Fortunately here I an designing the floor and the roof. I do share your concerns though. I have put the girder as far back as I can get (against the stair well). Once I actually got into the design I noticed that they have a post at the corner of the cant that supporting the porch roof beam...

Thanks. Good food for thought.

I'm designing a floor truss system that has a short cantilever (1'6") that is perpendicular to the trusses. Generally I follow the 150% rule of thumb which would give a 4'6" back span, which will end up being 5'4" to keep the 16"oc truss spacing nice and neat. The question I have is, can you...

No offence but this looks like a school assignment/homework.

I mostly do part 9. Almost all the part 4 stuff I do has a structural package with it so the headers are usually out of my scope.

Thanks. Article looks interesting...printing it off now.

Thanks. I'd call that a 'rule of thumb' for a preliminary design. I'll stick that in my back pocket.

Thanks. I generally start with a 2-ply 2x8 and upsize as loads dictate. I also try to make as few unique things as well, especially when designing trusses, as there are real savings to be had. I guess my irk is probably related more to my own personality. My scope is usually design of the...

Thanks. Didn't occur to me.

A bit of background to my question: I have seen on house plans (architectural and structural) minimum header requirements of 2-ply 2x10 for <6' span and 3-ply 2x10 for >6' span or some similar variation. I have also had people tell me that these are code requirements (BCBC 2024, etc.). When I...

I have some questions about king and jack (trimmer) studs. Some of its generic but also pertains to 9.23.10.6 of the NBCC (National Building Code of Canada). I size headers/lintels primarily using iStruct taking into account loads from floors, roofs, decks, girders...everything. Based on...

For us it’s a manufacturing thing. Our machine can only do max 24” depth. Most of the time that’s enough. Anything bigger goes to our regular table. Last year I did a floor with ~4’ depth. There was no reason from a structural viewpoint. Just what the architect had in his head.

Attached is a picture of the truss. The bearings are aligned with the walls of the seacans. From my understanding, people put a 2x plate along the top of the walls. This is a much larger span than what we normally design so in this case there is a large 1000lb+ uplift (with 24"oc) on the...

Awesome! Thank you.

Thanks. The load will be bear on one wall (the inside wall) and I assume a 2x6 plate will be on top of the seacan wall to secure the trusses. The outside wall will see an uplift from the trusses. The loads on the inner wall are 463 plf DL and 814 plf SL. This is not high at all for a wood...

As I mentioned, the building design is not in my scope...just the trusses. I am just curious and trying to build some knowledge with the help form others.

I have designed several roof truss systems for garages/storage buildings constructed with seacans as the 'walls'. They are increasingly popular, especially with homesteaders. Most of the time the trusses bear on the walls with a sill plates running up the 40' (or 20') sides. We have a...

It helps if you read the fine print. Found a note that explains it all. 2S2C means two studs and 2 cripples...that's a lot more detail than we normally get for window headers.