In the afternoon I measured the diagonals to make sure the whole structure is a square and not a trapezoid. One diagonal was 288" and the other is 289", a quick check with Google and I came across this:
Handbook of Construction
Tolerances by David Kent (McGraw-Hill) lists hundreds of suggested
tolerances for various phases of construction.
According to the Handbook , horizontal building layout (including the foundation) involves both dimensional accuracy and squareness. For measurements less than 10 feet, the tolerance is 1/8 inch; between 10 and 100 feet, it’s 1/4 inch (see illustration, below). For squareness, the tolerance for the dimension of the 5-leg in a 3-4-5 triangle measured with a steel tape is 3/4 inch in 100 feet. Use the same ratio for diagonals of less than 100 feet. For example, when measuring a 50-foot diagonal, the acceptable tolerance would be 3/8 inch (one-half the tolerance for the 100-foot diagonal).
Foundations walls should be level within 1/4 inch in 10 feet, while the entire foundation should be level within 1/2 inch.
The Handbook states that there is no single accepted tolerance for rough framing, although a tolerance of 1/4 inch in 10 feet is frequently used and is acceptable. The second edition of Standards for the Professional Remodeler (NAHB Remodelors Council, available from the NAHB Bookstore at 800/223-2665) requires that walls and floors be plumb and level within 1/4 inch in 32 inches. This seems overly generous when you consider that it would allow an 8-foot wall to be up to 3/4 inch out of plumb.
According to the Handbook , horizontal building layout (including the foundation) involves both dimensional accuracy and squareness. For measurements less than 10 feet, the tolerance is 1/8 inch; between 10 and 100 feet, it’s 1/4 inch (see illustration, below). For squareness, the tolerance for the dimension of the 5-leg in a 3-4-5 triangle measured with a steel tape is 3/4 inch in 100 feet. Use the same ratio for diagonals of less than 100 feet. For example, when measuring a 50-foot diagonal, the acceptable tolerance would be 3/8 inch (one-half the tolerance for the 100-foot diagonal).
Foundations walls should be level within 1/4 inch in 10 feet, while the entire foundation should be level within 1/2 inch.
The Handbook states that there is no single accepted tolerance for rough framing, although a tolerance of 1/4 inch in 10 feet is frequently used and is acceptable. The second edition of Standards for the Professional Remodeler (NAHB Remodelors Council, available from the NAHB Bookstore at 800/223-2665) requires that walls and floors be plumb and level within 1/4 inch in 32 inches. This seems overly generous when you consider that it would allow an 8-foot wall to be up to 3/4 inch out of plumb.
So on my 24' diagonals I was allowed to be out 3/16 of an inch from each other, I'm at 1". I'm going to have to pull all the screws and plywood, square it up and re-screw it. Crap.
Expenses to date $,538
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