- 18 -
EXAMPLE PROBLEM
ROOF RISE
This is a useful calculation in determining wall
heights. This example will figure the
RISE
of a
roof knowing the
SLOPE
is 4 in 12 and the
RUN
is 13'- 2 3/8"
Remember:
The
SLOPE
of a roof equals its
RISE
in
INCHES
over a
RUN
of
12"
, thus a 4/12 roof
has a
SLOPE
of "4".
When using the
SLOPE
function always enter it
in
INCHES
.
Press:
Answer:
Note:
Inputs may be reviewed by
pressing the or keys.
13
16
4- 4
'
''
rise
A = 13- 2 3/8
B = ??
4
slope
12
run
ENTER
2nd
FN
1
3
4
ENTER
B
S
B
A
2
3
/ 8
ENTER
A
2nd
FN
B
S
- 19 -
EXAMPLE PROBLEM
ROOF SLOPE - GIVEN RISE & RUN
Press:
Answer:
Remember:
"slope"
is always "
rise
" in
INCHES
over a
"run"
of 12 inches.
4
''
rise
A = 20- 0
B = 6 8
slope = ??
12
run
0
2
6
B
8
A
ENTER
2nd
FN
B
S
- 20 -
EXAMPLE PROBLEMS
SQUARING A FOUNDATION
Calculate the
DIAGONAL
of the above rectangle.
Press:
Answer:
The sides will be
SQUARE
when the
DIAGONAL
measures
68'- 6 1/8"
.
1
8
68- 6
'
''
65' - 8 1/2"
A
19' - 4 3/4"
B
diagonal
C
1
9
A
ENTER
1
5
6
8
/ 2
ENTER
C
B
ENTER
3
4
/ 4
ENTER
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