Sonin dt110 Reference Guide
- 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
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