- 12 -
EXAMPLE PROBLEM
CARPENTRY - ROUGH OPENING
Given 5 windows, each 2'- 11 7/16 wide, find their
overall width if they are placed side-by-side in a
wall.
Press:
Answer:
Press:
to see the
fif
answer
2' 11 7/16" × 5 = ??
1
2
ENTER
1
ENTER
3
7
/ 16
5
5
14.765625
'
3
16
14- 9
'
''
fifdfm
modes
- 13 -
EXAMPLE PROBLEM
CARPENTRY - RAFTER LENGTH
Right triangle problems are easy with
I
. In this example enter the two known
sides, A and B, and press
C
to automatically
solve for the 3rd side:
Press:
To find the unknown Rafter Length:
Press:
Answer:
Note:
Press
A
,
B
,
C
, or
S
to review the 4 variables
associated with this right triangle.
C = ??
diagonal
run
A = 12' - 2 1/2"
rise
B = 4' - 6 1/4"
2
ENTER
1
2
ENTER
A
1
/ 2
6
ENTER
4
ENTER
B
1
/ 4
C
1
4
13- 0
'
''
- 14 -
EXAMPLE PROBLEM
CARPENTRY - STAIR RISERS
Given 8'- 10 3/ 4" for a Floor-to-Floor dimension,
how many risers will be required approximately
8" high? What is the exact height of each riser?
Press:
Remember:
Store in memory for later use.
Press:
Answer:
Remember:
The answer reads as 13 units (risers)
plus a remainder. If the answer is 13.4 or less
round down to 13 risers.
To find the dimension of each riser you must now
recall the Floor-to-Floor dimension from memory...
Press:
Answer:
13.34375
'
0.6842948
'
ENTER
0
1
8
ENTER
STO
3
/ 4
2nd
FN
1
3
4
STO
RCL
5
5
8
4
ENTER
All manuals and user guides at all-guides.com
