Foundation for shed


  #1  
Old 05-26-05, 05:19 PM
doodle302
Visiting Guest
Posts: n/a
Question Foundation for shed

I'm designing a shed and I'm wondering if the foundation is over/under built ??

I'm looking at building it 12' wide by 16' deep. I would like to use 2 x 6 treated lumber ( running 12' wide ) spaced at 16' o/c. with 5/8 flooring. The shed is going to be used for storage ( two ATV's, garden tractor, etc, etc )

I'm wondering if the 12' span should be braced in the middle or will it be able to hold the weight ??????
 
  #2  
Old 05-29-05, 09:45 PM
C
Member
Join Date: Nov 2001
Location: Taylors, SC
Posts: 9,483
Likes: 0
Received 0 Likes on 0 Posts
You will need at least 2x8 to span 12 feet for a live load of 40 pounds per square foot and a dead load of 10 psf. A 2x6 is good for 9 feet 9 inches. You will need the larger lumber or bracing.
 
  #3  
Old 05-30-05, 08:50 PM
L
Member
Join Date: Mar 2000
Location: Arlington, WA
Posts: 9,238
Likes: 0
Received 1 Like on 1 Post
Your shed is over 120 sq. ft. -- check with your local bldg. dept. about needing a permit for it. If you need the permit, pull it!! Don't go shooting yourself in the foot to save $100!!!
 
  #4  
Old 05-31-05, 03:01 PM
S
Member
Join Date: Jan 2005
Location: northern, NJ
Posts: 228
Likes: 0
Received 1 Like on 1 Post
I am looking to put a 10'x10' Duramax vinyl shed (http://www.durasheds.com/10-series.html). I was thinking of doing this as the base, let me know if this would work..

Buy FOUR pieces of 10' x 4" x 4" pressure treated lumber, make a square out of them and nail them together. Sit the wooden square on the flat dirt ground. Next, build the shed ontop of this square. Once the shed is all built, then go and dump gravel inside of the wooden square frame 4" high and this will be the floor of the shed. This way I don't have to worry about building a plywood floor and making sure to add enough beams to support the weight of an ATV, etc. All of the stuff inside the shed will just sit directly ontop of the gravel which is sitting ontop of dirt. Plus the nice thing about gravel is you don't have to worry about a wooden floor ever rotting, you don't have to worry about if you spill something inside the shed or have a gas leak from a atv, tractor, etc, because any liquid will just seep through the gravel and into the ground. Plus doing it this way would be very inexpensive, quick and easy I believe.

I figure I would need about 1.3 cubic yards of gravel for the base.
10'x10'x4" (deep) = 400 / 324 = 1.23 cubic yards of gravel

So you figure the cost of 4 pieces of wood, and the gravel, I think this is the cheapest foundation you could get!
 
  #5  
Old 06-01-05, 06:05 PM
L
Member
Join Date: Mar 2000
Location: Arlington, WA
Posts: 9,238
Likes: 0
Received 1 Like on 1 Post
I would use 4X4X12's. That way they are outside of the base for the shed, and would be much easier to replace once they rot. Would take a bit more base (1-3/4 yds.). And, in addition to nailing the corners together, I would add 3 or 4 steel concrete stakes (12" or 18") to the outside of the 4X4's on each side to keep them in place.
 
  #6  
Old 06-01-05, 07:39 PM
S
Member
Join Date: Jan 2005
Location: northern, NJ
Posts: 228
Likes: 0
Received 1 Like on 1 Post
what do you mean they are outside of the base for the shed?
 
  #7  
Old 06-02-05, 09:57 PM
L
Member
Join Date: Mar 2000
Location: Arlington, WA
Posts: 9,238
Likes: 0
Received 1 Like on 1 Post
Just that.

Your shed is 10 X10. Make the base 12 X 12. The PT 4X4's are going to rot at some point. Get them out away from the shed so that you can replace them without tearing the shed apart.

Question is what to anchor the shed to. A vinyl shed will be there forever. I would pour a 4" wide by 6" deep concrete footing around the perimeter of the shed and anchor it to that. The 4X4's are only there to keep the gravel in place.
 
  #8  
Old 06-03-05, 07:10 AM
S
Member
Join Date: Jan 2005
Location: northern, NJ
Posts: 228
Likes: 0
Received 1 Like on 1 Post
no no, I am mounting the base of the shed to the 4x4's, that's why the 4x4's have to be the same size as the base of the shed (10'x10') Then I am filling in the middle with crushed rock that they use on driveways to make a floor.
 
 

Thread Tools
Search this Thread
 
Ask a Question
Question Title:
Description:
Your question will be posted in: