Ah, I’m starting to get it. If you are able to, add in just a few ceiling joists and strut plates so I can really study this.
There is a lot of extra wood that goes into these hand framed roofs, wow. Lot of respect for the guys that can do this kind of construction, manufactured trusses have made us lazy in some respects.
Okay that is handy extension. I’ve got SU 2024 but I’ve since mostly backed off to SU 2023 since I don’t like that it doesn’t have the ability to save to previous versions and I need that functionality when I’m creating components for the plugin libraries.
I get what you are doing here with the struts, purlins and strut plates. Quite a bit going on here.
In the past we mostly do this:
If you mean purlin braces perpendicular to the ceiling joists, I’ve seen it done a few different ways:
I will need to spend some quality time looking all of this over and seeing if it could somehow be reduced to some clever algorithms. Thank-you for putting this together.
Can you do that and make the required fire separation work for a garage? I guess if you wrapped the beam in fire rated drywall?
Each specific application would be different I suppose. What a particular building department would allow is often a mystery! I worked on some condos putting in large beams that were non structural only for looks. Between each adjoined unit they required continuous double 5/8 drywall firewall and there were framing connections that sandwiched the drywall. I thought it was a bad solution. I would think the fire wall wouldn’t need to pass through the floor system but could be interrupted by the floor. I dont see fire wall required to continue through to the attic space if the garage has a Gyp lid.