P
OCKET
R
EFERENCE
G
UIDE
— 22
Board Feet and Cost
Find the total Board Feet for the following
boards: 2x4x16, 2x10x18 and 2x12x20.
What is the total cost at $275 per Mbm*?
*Per thousand Board Foot measure
KEYSTROKE
DISPLAY
o o
0.
2 x 4 x 1 6 b µ
BDFT 10.66667
2 x 1 0 x 1 8 b µ
BDFT 30.
2 x 1 2 x 2 0 b µ
BDFT 40.
® ®
BDFT 80.66667
x 2 7 5 Ç •
$ 22.
18
Carpentry —
Calculating Number
of Studs
Find the number of 16-Inch On-Center
studs needed for an 18 Feet 7-1/2 Inch
wall.
KEYSTROKE
DISPLAY
1. Divide Length by spacing:
o o
0.
1 8 f 7 i 1 / 2
18
FEET
7-1/2
INCH
÷ 1 6 i =
13.96875
(14 studs)
2. Add one for the end:
+ 1 =
14.96875
(15 studs)
Note: Also applies to trusses and joists.
M
M
M
Summary of Contents for Construction Master 5
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Page 46: ...POCKET REFERENCE GUIDE 42 AREA AND VOLUME FORMULAS Area Formulas Dgm AF 100...
Page 47: ...POCKET REFERENCE GUIDE 43 Volume Formulas Dgm VF 101...
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