User's Guide — 39
Back-Fill on a Slope
with Percent of Grade Known
You’ve built 55 linear feet of a three-
foot high retaining wall 3 feet out
from the base of a 65% grade. You
plan to back-fill to within 12 inches of
the top of the wall (for a 2’ depth).
How many cubic yards of fill should
you have delivered?
2’
3’
3’
A
B
?
?
65%
Grade
Keystroke Display
[On/C] [On/C]
0.
1. Find Volume for “A”
55 [Feet]
55 FT
[x] 3 [Feet]
3 FT
[x] 2 [Feet] [=] [M+]
330 CU FT
2. Find Run/Diagonal of “B”
65 [%] [Conv][Pitch]
PTCH 0.65
2 [Feet] [Rise]
RISE 2 FT
[Run]
RUN 3 FT 0-15/16 IN
[Diag]
DIAG 3 FT 8-1/16 IN
