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08-19-2012, 01:49 PM   #1
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## How do I figure out how many studs for a wall?

I have a wall that is 24' long by 10' an then my other wall is 20' long how do I figure how many studs are needed and how much insulation? The walls will be 16"oc

08-19-2012, 01:58 PM   #2
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Usually figuring one stud per foot will get you pretty close. Insulation generally comes by the sq ft. Length of wall times height. Don't forget that you will need plates for the wall as well.

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08-19-2012, 03:30 PM   #3
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Quote:
 Originally Posted by oyates I have a wall that is 24' long by 10' an then my other wall is 20' long how do I figure how many studs are needed and how much insulation? The walls will be 16"oc
You have the key numbers. Now if you do not know how to do basic math, find a third grader that can take the length and figure out how many inches, then take that number and divide by 16.

 08-19-2012, 03:51 PM #4 Member   Join Date: Mar 2010 Location: PENNSYLVANIA Posts: 2,329 Rewards Points: 1,186 Yeah that one foot rule is good, somehow somewhere I am sure if you have any left over you will find a use for them. Guaranteed.
 08-19-2012, 04:01 PM #5 JOATMON     Join Date: Aug 2011 Location: S. California Posts: 10,580 Rewards Points: 320 Blog Entries: 2 I use a different method..... Since I want to make sure that studs land on 16" OC.....I think of it terms of a sheet of OSB (or drywall)....each sheet takes 3 studs (plus the end stud).....so if I have a wall 20' long....that is 5 sheets of OSB for the shearwall....5 x 3 + 1....16 studs....plus 2 20 footers for the top plate..... Don't forget that if you windows or doors....you will need you jack stud and trimmers..... When I first started off doing DIY....I tried to get my counts exact....after awhile I realized I was making too many trips back to HD for "one more piece".....now I make sure I buy extra.....I can always return what I don't use.....which in most cases, I end up using it anyway. __________________ Even if you are on the right track, you will still get run over if you just sit there. My 2-Story Addition Build in Progress Link ... My Garage Build Link and My Jeep Build Link
 08-19-2012, 04:17 PM #6 Framing Contractor   Join Date: Feb 2009 Location: NE Ohio Posts: 1,161 Rewards Points: 20 2x4's are never technically "left over" There is always a use for a couple of them. Not to mention, they are very inexpensive and have a great shelf life.
08-19-2012, 04:23 PM   #7
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Quote:
 Originally Posted by sixeightten 2x4's are never technically "left over" There is always a use for a couple of them. Not to mention, they are very inexpensive and have a great shelf life.
^^^^+1

If its just stud wall you can go length in ft x .8 But you will have corners that will eat up a couple.
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08-19-2012, 07:57 PM   #8
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Quote:
 Originally Posted by COLDIRON Yeah that one foot rule is good, somehow somewhere I am sure if you have any left over you will find a use for them. Guaranteed.

Add an extra 10--that is what I always do--with doors--wall ends and blocking you will use them and more--
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 08-19-2012, 09:02 PM #9 In a little over my head   Join Date: Jan 2011 Location: Atlanta, GA Posts: 838 Rewards Points: 706 Windows and doors really add to the stud count. Especially if you want particular sizes or need them in a particular place.
 08-19-2012, 09:18 PM #10 Member   Join Date: Mar 2011 Location: Hoffman Estates, IL Posts: 104 Rewards Points: 83 Good shelf life....!.? No offense, but it seems I spend an hour picking out studs at Home Depot....Then I end up using half of them through the weekend, and must leave town for business (a slow DIYer . ) When I come home 5 days later....its a warped mess. lol I have found if you don't use 2x4s right away...they may twist. Of course mildly twisted and warped ones are still usable in many instances Last edited by D270; 08-19-2012 at 09:21 PM.
 The Following User Says Thank You to D270 For This Useful Post: mae-ling (09-26-2012)
 08-19-2012, 09:43 PM #11 Member   Join Date: Dec 2006 Posts: 17,158 Rewards Points: 6,652 I have had 2x4's laying up in the attic of our garage, and never had any twist on me. Matter of fact, I have lumber up there from nine years ago, and still as straight as it was, when I brought it home.
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08-19-2012, 10:38 PM   #12
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Quote:
 Originally Posted by D270 Good shelf life....!.? No offense, but it seems I spend an hour picking out studs at Home Depot....Then I end up using half of them through the weekend, and must leave town for business (a slow DIYer . ) When I come home 5 days later....its a warped mess. lol I have found if you don't use 2x4s right away...they may twist. Of course mildly twisted and warped ones are still usable in many instances
First problem is you said home depot for studs lol
You let then suck up moisture then yes they will warp like mad.
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 08-20-2012, 01:07 AM #13 Registered User   Join Date: Mar 2009 Posts: 11,301 Rewards Points: 4,668 Figure 1 per foot as said, on a house. Individual walls, almost as easy; 24'wall= 1/2 length(12) plus 1/2 that # =(6) plus (1)starter stud = 19 studs. 20' = 10+5+1 = 16 studs Gary __________________ If any ads are present below my answer or words underlined/colored, I do not condone/support/use the product or services listed/linked to, they are there without my consent. 17,000 dryer fires a year, when did you last clean the inside of the dryer near motor or the exhaust ducting?
 The Following User Says Thank You to Gary in WA For This Useful Post: mae-ling (09-26-2012)
09-26-2012, 02:46 PM   #14
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Quote:
 Originally Posted by gregzoll I have had 2x4's laying up in the attic of our garage, and never had any twist on me. Matter of fact, I have lumber up there from nine years ago, and still as straight as it was, when I brought it home.
Wow you must be lucky.

Every contractor I have known will come right out and say if you don't nail it up, it will bow/twist.

09-26-2012, 02:56 PM   #15
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Quote:
 Originally Posted by D270 Wow you must be lucky. Every contractor I have known will come right out and say if you don't nail it up, it will bow/twist.
Not always... This all depends on how you store the 2x4s.

Pressure Treated ones will definitely bow.

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