approximate inside dementions?

[action fab]

I have been designing my new shop/apt. and need to know what the int. dimensions would be?

It would be a 40x80 with a 30x40 loft that we will live in. leaving a full 40x80 work spase. I will use 2x4's for all the walls so I figure that the actual loft space will be 28'10"x38'4"... is that acurate?

 

[akdiesel]

Off subject a little.
I am not a full time contractor but I would look into using 2x6 for the framing of the walls. I am assuming you are going to be going at least 16' interior hight.
This will give you more structural stability for the hight you will need and support for any additonal lofts you want to use.

 

[JSBriggs]

It would be 29'4" x 39'4" if you use 2x4's with 1/2" drywall. You don't subtract the exterior siding as the rough framing is flush withe foundation and the siding actually adds to the exterior dimension.

-Jeff

 

[action fab]

that only subtracts one of the walls from each side. I will be building from the inside of the perlin.

 

[ddawg16]

Not sure the have a cure for 'demention'.....oh, you mean 'dimensions'.

Depends on what you are using for a reference.....if your building it where your dimensions are for the inside....then your outside 'space' could be 30'6" x 40'6" up to 31'x41' depending on if you use 2x4 or 2x6 and what you put on both sides of the walls.

I agree with akdiesel....2x6....especially with a loft....cost is very little more....but adds a whole lot more strength....and a lot straighter.....

So...assuming you use 2x6's....they will actually be 5.5" wide....then add to that what ever is going to be on the outside and inside....that will be how thick the wall is.

BTW....what ever the bottom dimensions are...the loft will be the same width...unless you using a non-standard method of construction.

 

[Mr. Jean]

Yes, another vote for the 2x6

 

[ket-tek]

Agreed with above, there's no way I would build a 40x80 2 story open structure with 2x4's... Go at least 2x6 for sure.

My 28x38 two-story garage is built with 2x6 and it is noticeably more stable than a 2x4 structure, and the cost was minimal.. The other huge benefit I gained is the use of 6" r-19 insulation instead of 4" r-13.. Huge difference in helping to regulate the temperature inside.

 

[action fab]

You guys aren't really getting my question or what I am building. I am drawing plans right now so when I am done I will upload them to show you.

thanks any way.

 

[Cryptic1911]

just knock a foot off your "outside" dimensions.. figure roughly 6" for each wall. Build it with 2x6's instead of 2x4's

 

[akdiesel]

just knock a foot off your "outside" dimensions.. figure roughly 6" for each wall. Build it with 2x6's instead of 2x4's

Exactly.
Is this for a contract to see how much the build will be per sf?
40x80 is 3200 sf. Taking the above rule of thumb that comes out to be approx. 39x79 which is 3081 sf., with a loft of approx. 29x39 at 1131 sf.

 

[Red05GT]

Figure the loft @ 30 x 40 = 1200 sf. If your budget is so tight that 69 square feet
makes a difference, then you can't afford the 2 x 6's. Is pole construction a consideration, or does your location rule that out? Keep in mind sidewall height to have
adequate head room on top of mezzanine. Could use scissor trusses to give extra head
room above loft area. Are you looking at acting as GC or hiring everything done?

 

[JSBriggs]

Lets back up a bit. In your second post you mention "perlin". What type of structure are you building? Stick framed? Steel building with stick framing on the interior?

-Jeff