How to use — sloped diagonal
- Measure the length and width of the foundation.
- Find the rise from one corner to the opposite corner across the diagonal.
- Compare the expected slope-tape reading to what your tape reads on the hill.
- Enter both slope diagonals to check if the foundation is square in plan view.
Tip: If the ground drops 2 ft across a 40 ft diagonal, your slope tape will read about 40.05 ft.
Foundation dimensions
ft
in
ft
in
Sloped / hillside
Or compute from rod readings below.
Compare measured slope diagonals
Enter each slope tape reading. Per-diagonal rise is optional — leave blank to use the rise above.