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30 Cards in this Set
- Front
- Back
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What is the wight of a gallon of water?
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8.22 lbs
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How many gallons in one cubic foot?
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7.48 gallons
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One cubic inch of water weights?
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.036 lbs
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The number 21 represents
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cubic inches in 1 gallons of water
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One cubic foot of water weighs?
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62.4 lbs
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The number 2.31 represents
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1 PSI raises water 2.31'
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The formula for finding head pressure is
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height divided by 2.31 = PSI
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A cube refers to a shape that has
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volume, all sides equal
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What is atmospheric pressure at sea level
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14.7 PSI
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The formula for perimeter is:
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L1 + L2 + W1 + W2= P
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To convert a fraction into a decimal :
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numerator divided by the demonimated
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How is the area of a rectangle or square calculated?
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LxW
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Name one formula used to find the area of a circle
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D(squared) times .7854
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The volume of a square or rectangle can be found by:
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LxWxH
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The answer for an area problem is given in :
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SQ FT
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What formula can be used to find the volume of a cylinder?
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D(squared) x .7854 x H
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How do we convert decimal feet to feet and inches?
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multiply the numbers to right of decimal by 12, then the numbers to the right of that decimal multiply by 8
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How do we convert feet and inches into decimal feet?
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feet go on left side of decimal. then divide inches and parts of an inch by 12
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What does the number 1728 represent?
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cubic inches in a cubic foot
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To find total fall:
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distance x grade
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To find grade:
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Total fall divided by distance
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To find distance:
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Total fall divided by grade
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When calculating total fall using %grade the answer will be in ______
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decimal ft
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How is circumference calculated?
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diameter times 3.14
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When finding percents the term (what is) means:
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?????????????
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The term (is over of) means:
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????????
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What are two other terms used for grade?
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pitch, slope
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The formula for travel is: (45 degree offset)
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offset/advance x 1.41 = Travel
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The formal for offset or advance is :(45 degree offset)
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Travel x .707 = Offset/ adv
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on a 45degree offset, how is the rise calculated?
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spread x .444 = rise
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