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Workshop office framing question

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Forum topic by dan_fash posted 09-20-2020 06:09 PM 1082 views 0 times favorited 18 replies Add to Favorites Watch
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dan_fash

65 posts in 4674 days


09-20-2020 06:09 PM

Hello fellow jocks. I’ve got a 30×50 metal shop with concrete floor. I’ve decided to build an office into one end, but want to utilize the space above the framed in office for storage. My question is, to make a safe floor on the second level, do I need to frame the office in 2×6 or will 2×4 walls be sufficiently strong to support the load of a decked ceiling?

Office space will be [email protected] 10×15 rooms, with a bathroom and storage closet between the two. Maximum floor joist span for attic space will be 10’, and I’ll build floor joists 2×8 12 IOC

-- "If I find in myself a desire which no experience in this world can satisfy, the most logical explantion is that I was made for another world." -C.S. Lewis


18 replies so far

View Richard Lee's profile

Richard Lee

438 posts in 2023 days


#1 posted 09-20-2020 06:19 PM

Well if you knew the load going up there then im sure its easy.
If you dont know then over build it.

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dan_fash

65 posts in 4674 days


#2 posted 09-20-2020 06:24 PM

It will be dual purpose. About half will be lumber storage, and half will be typical “attic” type storage, of holiday decorations, other seasonal items etc.

-- "If I find in myself a desire which no experience in this world can satisfy, the most logical explantion is that I was made for another world." -C.S. Lewis

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PCDub

306 posts in 1492 days


#3 posted 09-20-2020 07:19 PM

Millions of homes are framed with 2×4s with no regard to what people might be stashing inside…very few have fallen down because they were overloaded.

But I agree, if you’re not sure, or you want extra security, use 2×6s.

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ibewjon

2652 posts in 4041 days


#4 posted 09-20-2020 10:43 PM

And the 2×6’s give more space for insulation.

View gmc's profile

gmc

75 posts in 3404 days


#5 posted 09-21-2020 11:05 AM

The cost difference isn’t worth thinking about. It was $900 dollars more for my 2500sq ft house.

-- Gary, Central Illinois

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Robert

4747 posts in 2728 days


#6 posted 09-21-2020 01:36 PM



The cost difference isn t worth thinking about. It was $900 dollars more for my 2500sq ft house.

- gmc

Have you checked lumber prices recently? That might not be true anymore.

2×4 walls are plenty strong enough.

-- Everything is a prototype thats why its one of a kind!!

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Madmark2

3104 posts in 1836 days


#7 posted 09-21-2020 01:42 PM

Lumber is dense & heavy. Use 2×6’s.

-- The hump with the stump and the pump!

View Axis39's profile

Axis39

549 posts in 845 days


#8 posted 09-21-2020 02:02 PM

Are you asking about the walls, or the floor/ceiling joists?

If it’s walls, 2×4s will hold just fine.

If it’s joists, that’s a whole ‘nuther nut to crack and will require referencing some load/span tables to size properly.

-- John F. SoCal transplant, chewer uppper of good wood

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ibewjon

2652 posts in 4041 days


#9 posted 09-21-2020 02:35 PM

Compromise. Use 2×6 for the walls holding the floor above, and 2×4 for walls parallel the the joists.

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bondogaposis

6048 posts in 3599 days


#10 posted 09-21-2020 03:47 PM

2×4’s will be adequate for the walls, the real question should be, what is the span of the ceiling? The longer the span the wider the ceiling joists need to be.

-- Bondo Gaposis

View dan_fash's profile

dan_fash

65 posts in 4674 days


#11 posted 09-22-2020 04:34 AM

Thanks all. I think I’ll likely go 2×6 assuming cost is reasonable. I addressed the ceiling span and upper floor joists in the original post.

-- "If I find in myself a desire which no experience in this world can satisfy, the most logical explantion is that I was made for another world." -C.S. Lewis

View david2011's profile

david2011

163 posts in 4955 days


#12 posted 10-10-2020 12:09 AM

I went with 2×6s for the studs in my new shop for two reasons. One was to keep cooling costs down on the Texas Gulf Coast and the other was to control noise going out of the shop. It’s easy to find joist load tables on the Internet.

-- David

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LumberZac

27 posts in 331 days


#13 posted 11-29-2020 11:43 AM

If it’s for walls there’s really no reason you’d need to use 2×6’s. 2×4’s are used almost universally for residential construction and it’s the spacing that’s adjusted in most cases(followed by timber grade). For a space that size 2 foot spacing’s would be fine even but go for 1+1/2 if you’re feeling nervous.
If you’re really determined to spend more on the wall members I’d recommend going thicker not wider. Or you could simply spend the money on anything else.
But yeah, good idea using 2×6’s for your bearers to support your loft. I could check a span table(Australian Standards but I don’t see why that would matter for this sort of fit-out) if you want but they should be just fine for spaces that size, assuming the connections line up neatly and everything’s fastened well.

-- I like to go against the grain, except when I'm planing...

View John Smith's profile

John Smith

3007 posts in 1410 days


#14 posted 11-29-2020 12:34 PM

an office space is always a good idea inside the shop.
you don’t have to get crazy with the design, or creature comforts,
but – a small fireplace with a small vintage park bench across the room is pretty cool.

.

-- I am a painter: that's what I do, I like to paint things. --

View Jeff's profile

Jeff

553 posts in 4442 days


#15 posted 11-29-2020 01:02 PM

2×6’s use less lumber overall because you can use 24” spacing between and corners only need two studs for enough space for drywall attachment while 2×4’s need three. And, yes there’s the advantage of allowing more insulation volume. Disadvantage is slightly less room volume.

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