P
OCKET REFERENCE GUIDE — 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
P-MD 10.66667
2 x 1 0 x 1 8 b μ
P-MD 30.
2 x 1 2 x 2 0 b μ
P-MD 40.
® ® P-MD 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 PIES 7-1/2 PULG
÷ 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.
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