I would like to frame off an extra room in my garage, but unsure what the best way/ size to frame it. Garage is a 40x72 14ft tall with 8ft truss spacing. I want to build a 27ft long x 15ft wide 11ft tall enclosed room with a 8ft tall and two 5ft wide doors. Basically want to park a car in there to keep clean and out of the way. On top of the room I would like to store so stuff like car parts. Fenders, doors, floor pans. Heavy items and other car related stuff would go on pallet racking. I figured it would be 16" on center studs on the 27ft side. Just unsure of stud size and best way to attach to wall.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an alternative browser.
You should upgrade or use an alternative browser.
Framing extra room
- Thread starter 70staged
- Start date
CraigStu
Well-known member
In my area 2x10s on 16" centers max out at a 14ft wide room. Not sure if that is a code thing or what. To go to 15ft maybe 12" centers would be OK or go to 2x12s. I am not knowledgable on how to attach to your wall but suspect you may need to build a conventional wall inside the existing wall as easiest way to do it. I am sure others will add info for you.
billconner
Well-known member
I'd use 2x4 studs with p.t. sill and double top plate. I dont know what exterior wall is - studs, post frame, sheathed, etc. An interior stud wall would certainly work but depending on framing and if the wall is covered and how you feel about opening it, there could be simpler ways.
I think SPF no. 2 - 2x10s joists 16" o c. would be fine for 40 psf, which is more than needed. 2x8s almost work for 30 psf which would be fine.
I think SPF no. 2 - 2x10s joists 16" o c. would be fine for 40 psf, which is more than needed. 2x8s almost work for 30 psf which would be fine.
billconner
Well-known member
If you can build a stud wall within - between - the 6x6s - that would seem cleanest, with jousts sitting on top plate. If already sheathed I'd cut sheathing and anchor a header to posts and use joist hangers. I'd be very tempted to lag a 2x4 at each post under header. I don't trust a lagged or structural screwed ledger much - to much force for it to rotate off the posts. It's a super conservative opinion.
I'd have to do some looking and calcs to size header and about to head to code hearings for next 4 days, so not now.
I'd have to do some looking and calcs to size header and about to head to code hearings for next 4 days, so not now.