Foundation dimensions
ft
in
ft
in
Expected diagonal
—
Diagonal check
Measure both diagonals in decimal feet and compare.
3-4-5 method
Use 1 for 3-4-5, 2 for 6-8-10, 3 for 9-12-15…
Side A
9 ft
Side B
12 ft
Diag C
15 ft
Measure both diagonals in decimal feet and compare.
Use 1 for 3-4-5, 2 for 6-8-10, 3 for 9-12-15…