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How many 2x4's needed to build shed 18x20?
360 square feet. Multiply the two dimensions - the result is the number of square feet.
Answer: It all depends on the thickness, which you left out of your question. At 4" thick, it would be about 4 1/2 cubic yards. At 6" thick, it would be about 6 3/4… cubic yards. At 8" thick, it would be almost 9 cubic yards.
10 studs for the walls for 16" on center and you need a single bottom plate and double top plate... 16 2x4's should do the trick
Wall studs are to be 16" on center in most places. 20 feet x 12 inches (# of inches per foot) = 240 / 16 (spacing of wall studs) = 15 15 x 2 (both of the 20 foot walls) = …30 30 x 12 = 360 / 16 = 23 x 2 = 46 Add 4 extra for the corners so 4 + 46 + 30 = 80. That's just the walls. The rest will depend on any doors or windows you have because those will require adding extra jack & king studs to carry the load as well as how you decide to handle the roof.
9 if the studs are on 16" center and 7 if on 24"
The material list is: 2 - 2 x 4 x 16 13 - 2 x 4 x 8 The first 16 footer serves as the base plate. The second 16 footer serves as the top plate. The thirteen 8 footers are the …studs which comprise the structural substance, if this wall calls for them to be spaced 16 inches apart which is the most common spacing. Since you didn't specify the spacing, this is assumed. The spacing of the final stud will only be 12.5" from its neighbor. This closer spacing gives an overall length of exactly 16 feet. If the prior 16" oc spacing is continued, the wall will be 16'-3.5" long
It depends upon whether or not the wall is load bearing. If load bearing, the distance between standard studs is nominally 16 inches. If not load bearing, it can be 24 inches.… There may be complications at the ends of the wall and doors and windows will also increase the number of 2x4's that are needed. A good rule of thumb is to figure one per foot. So in your case that would be 16.
The majority of garden sheds do not require planning permission or approval under building regulations. However, permission is required for any shed which covers over half the… garden, which is not for domestic use or which is over 3 metres high with a pent roof or 4 metres high with an apex roof. Larger sheds which are within 2 metres of a boundary and over 2.5m high (8'2") also require planning permission. Building regulation approval is also required for any shed with an internal floor area of more than 30 square metres whether the structure is temporary or permanent including garden sheds.
50 A good rule of thumb is to figure 1 - 2x4 stud per foot. This allows for extra cripple, jack and corner studs
12 feet is 12 x 12 = 144 inches. Divide by 16 inches spacing and you get 9 needed. Add one more for the end =10
Answer . You will need at least 13-9' 2x4's, on 16" centers, and 2-16' 2x4's for plates. (Deduct plate thickness from stud length)
Answer 20 10 Ft vertical studs plus 8 10 ft top/bottom plates, assuming double plates on the top.
figure 1 per foot so 30 + 30 foot of stud for bottom plate = 60 foot of stud for top plate .... if using 8ft lumber i would get 42 total.