80 for your studs, using the same for plates? If so, add the full linear footage for your rim and header, ALL around the building.
400 (20x20) square inches is 2.78 square feet.
20x20 = 400 2x4= 8 400/8= 50 needed
If that is 20ft by 20ft then there are 400 square feet
In England typical stud spacing is 16", so 10 studs. Sometimes people use 2' spacing, which would require 7 studs
80 for your studs, using the same for plates? If so, add the full linear footage for your rim and header, ALL around the building.
That cannot be answered without looking at the plans.
400 (20x20) square inches is 2.78 square feet.
400
400
20x20 = 400 2x4= 8 400/8= 50 needed
20 10 Ft vertical studs plus 8 10 ft top/bottom plates, assuming double plates on the top.
40
2.78 square feet.
If that is 20ft by 20ft then there are 400 square feet
it can have 6 or more studs
31 Studs not counting corners