Math Flashcards

Learn stupid formulas

1
Q

What’s the formula for center line perimeter?

A

(length x width) x 2 - (4 x wall thickness)

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2
Q

1 foot cubed is equilvelent to how many yards cubed

A

27 cubic yards to 1 foot

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3
Q

1 cubic yard is how many cubic metres?

A

0.7647m cubed

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4
Q

How many cubic yards is 27 cubic feet?

A

27cubic feet is equivalent to 1 cubic yard

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5
Q

What’s the formula to find end area of a battered wall?

A

end area =(L + W /2) x H

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6
Q

What’s the formula to find volume of concrete In a battered wall?

A

vol= end area x wall length

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7
Q

what is the formula for contact area for walls?

A

contact area =CLP x 2 x height of wall

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8
Q

How do you find the volume for your footing?

A

CLP x L x W

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9
Q

How do you calculate bd. ft. if a pile of lumber consisting of 24 pcs. 2” x 10” @ 18ft long?

A

24 x 2 x 10 x 18 / 12

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10
Q

if you have exactly 1510bd. ft and a waste factor of 4% how much board feet of lumber would need to be ordered?

A

1510 x 1.04 = 1570.04bd. ft.

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