JOURNEYMAN PLUMBING QUESTIONS AND ANSWERS

JOURNEYMAN PLUMBING QUESTIONS AND ANSWERS Travel - answer - The Distance from the initial offset to the second fitting Advance - answer - Distance parallel to the pipes between the offset fittings Offset - answer - Distance the pipe is offset from original position to new position Rolling offsets formula - answer - Travel = Rise x 2 = Spread x 2 What are the three ways water is present? - answer - Solid - Ice Liquid - Water Gas - Steam Pressure formula? - answer - Pressure= Head x .434 Head Formula? - answer - Head = Pressure x 2.3 Calculate the travel of 45 degree offset with a rise of 8" and a spread of 20" - answer - Travel = 21.54 x 1.414 = 30.45 Answer = 30 1/2" Pressure is 60 psi, you must run a water service to a house built on a 30 foot rise. What is going to be the pressure at the house? - answer - Pressure = Head x .434 30 x .434 = 13.02 loss ( Uphill ) 60 - 13 = 47 Answer = 47 psi Volume of a pipe formula? - answer - .0408 x D^2 x L Calculate the volume of a tank ( pipe ) 20 feet in height, with a diameter of 48" - answer - Answer = 434,294,78 cu inches * when we have cubic inches, must multiply volume by 231 (1880.06 gallons x 231) Calculate 1 1/2" pipe with an advance of 48" - answer - Answer = 64 7/8 " Travel = 1.414 x advance 1.414 x 48 = 67 7/8 " Minus 3