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EXAMPLE PROBLEMS
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.
Enter:
Feet Inch / 167
5
12
3
1
5
Answer: 14 Ft- 9 3/16 INCH
Carpentry Joist Numbers
Find the number of joists on 16" centers needed for a 32' 4"
long room.
Enter:
Feet Inch4
61
23
4
5
Inch
Answer: 24.25
( Add 1 for the end = 25.25 and round up to 26 )
2' 11 7/16" × 5 = ??
32' - 4"
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Costing a Concrete Walkway
To find the cost of concrete for this courtyard when the
concrete costs $50.00 per cubic yard:
Press
RCL2ND
to clear Memory.
First you must find the area of {a} Enter:
Feet Inch5 6 3 0
3 5
Inch
Answer: 13.75 SQ Ft Press
M+
to add to memory.
Find Area of {b} Enter:
Feet Inch9 6 3 0
3 5
Inch
Answer: 23.75 SQ Ft Press
M+
to add to memory.
Find Area of {c} Enter:
Feet Inch53 0
3 5
3
Answer: 87.5 SQFt Press
M+
to store in memory.
Press
RCL RCL
to recall 125 total SQ Ft
then multiply by depth
Inch4
3 5
Answer: 41.66667 CU Ft
To convert to Cubic Yards press
Yard
Answer: 1.54321 CU Yd
Press:
5 0 Cost
3
Answer: $77.16
EXAMPLE PROBLEMS
35'
30"
12'
8'
9' 6"
5' 6"
30"
b
c
a
30"
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Squaring a Foundation
Calculate the
DIAGONAL
of this rectangle
Press:
RunFeet Inch / 2856 1
Then
Rise Diag
Feet Inch
/ 4
9 41
3
Answer: 68 Ft - 6 9/64 INCH
To convert answer to /8ths press
/ 82ND
Stair Run Known
Build a stairway where the value of the Run (22' 5 1/4") is
known with a floor-floor height of 20' 6 1/2" using the default
riser height of 7 1/2".
Operation: Reset
Enter:
CE/CLRCE/CLR
Display: 0.
Operation: Enter floor to floor height
Enter:
RiseFeet Inch / 26 12 0
Display: RISE 20 Ft - 6 1/2 INCH
Operation: Enter Run
Enter:
RunFeet Inch / 45 12 2
Display: RUN 22 Ft - 5 1/4 INCH
EXAMPLE PROBLEMS
65' - 8 1/2"
19' - 4 3/4"
diagonal
?
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