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Plumbing - Formulas and Equivalents Troise

Mechanical Engineering33 CardsCreated 3 months ago

A deck of flashcards covering various plumbing formulas and equivalents related to water pressure, volumes, and temperatures.

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atmospheric pressure in feet of water head?

33.9 feet

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Key Terms

Term
Definition

atmospheric pressure in feet of water head?

33.9 feet

  1. Atmospheric pressure in lbs per sq in?

14.7 psi

  1. Atmospheric pressure in inches of mercury?

29.9”

  1. Weight of 1 cubic inch of water?

.0361 lbs

  1. Weight of 1 cubic inch of mercury?

.49 lbs

  1. What is specific gravity of mercury?

13.6

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Plumbing - Formulas and Equivalents Troise
TermDefinition

atmospheric pressure in feet of water head?

33.9 feet

  1. Atmospheric pressure in lbs per sq in?

14.7 psi

  1. Atmospheric pressure in inches of mercury?

29.9”

  1. Weight of 1 cubic inch of water?

.0361 lbs

  1. Weight of 1 cubic inch of mercury?

.49 lbs

  1. What is specific gravity of mercury?

13.6

  1. Weight of 1 cubic foot of water?

62.4 pounds

  1. Weight of 1 U.S. gallon of water?

8.33 pounds

  1. How many gallons has1 cubic foot of water?

7.48 gallons

  1. How many cubic inches has 1 U.S. gallon of water?

231 cu. in.

What is the pressure at the bottom of a column of one foot of water?
.434 lb. per sq. in.
What is the pressure in feet of pressure head at the bottom of a column of water that exerts pressure 1 lb. per sq in?
2.31 foot or 27.7 inches
How can you find pressure if you know Head?
Pressure = Height (Head) x .434 for each foot high

  1. How can you find head of pressure that water will rise if you water pressure?

Head in feet = pressure x 2.31

  1. Temperature of freezing of fresh water?

32* F

  1. Temperature of freezing of salt water?

27*F

  1. How can you find dimension of right triangle?

C = |** AxA + BxB
A = |** CxC - BxB
B = |** CxC - AxA.

  1. How can you find tje diameterbofna circle that is equivalent to twongiven circles?

D = |** dxd - dxd
D = |** dxd + dxd.

  1. Formila for the ratio of pipe capacities?

\R = |**[D/d)^5, were R - number of smaller pipes the larger one will supply.

  1. What number has Pi?

22/7 or 3.1416

  1. Formula for circumference?

C = D x Pi

  1. Formula for diameter of circumference?

D = C/Pi

  1. Formula for area of a circle?

A = Pi x D x D / 4.
A = .7854xDxD.
A = Pi x R x R.

Formula area of a triangle?

A = base x height / 2

  1. Volume of a cylindrical tank?

A = .7854x DxDxH.

  1. Area of rectangle?

A = base x height.

  1. Area of a square rectangle?

A = length x width.

  1. Volume of a square or rectangle?

A = length x width x height.

  1. Volum of a sphere?

V = 3.1416 x D x D x D / 6.
V = .5236 x D x D x D.

  1. Volume of a hemisphere?

V = .2618xDxDxD.

  1. Area of an ellipse?

A = .7854xDxd.

  1. Capacity of water in a cylindrical tank in gallons?

C = .0034xD"xD"xH".
C = .0408xD"xD"xH'.
C = .7854/231xD"xD"xH".