Journeyman Plumbing| 451 Questions| With Complete Solutions

Travel correct answer: The Distance from the initial offset to the second fitting Advance correct answer: Distance parallel to the pipes between the offset fittings Offset correct answer: Distance the pipe is offset from original position to new position Rolling offsets formula correct answer: Travel = Rise x 2 = Spread x 2 What are the three ways water is present? correct answer: Solid - Ice Liquid - Water Gas - Steam Pressure formula? correct answer: Pressure= Head x .434 Head Formula? correct answer: Head = Pressure x 2.3 Calculate the travel of 45 degree offset with a rise of 8" and a spread of 20" correct 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? correct answer: Pressure = Head x .434 30 x .434 = 13.02 loss ( Uphill ) 60 - 13 = 47 Answer = 47 psi Volume of a pipe formula? correct answer: .0408 x D^2 x L Calculate the volume of a tank ( pipe ) 20 feet in height, with a diameter of 48" correct 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" correct answer: Answer = 64 7/8 " Travel = 1.414 x advance 1.414 x 48 = 67 7/8 " Minus 3 ( 1 1/2 for both fittings ) = 64 7/8" Payment formula? correct answer: Payment = Base x Rate Rate formula? correct answer: Rate = Payment divided by Base You estimated a job at $2195, you need $900 upfront, what is the percent you collect upfront? correct answer: Answer = 41% Rate = 900 divided by 2195 = 41% When calculating offsets, what must be given? correct answer: Offset(Base) and Advance(altitude) When can you use PVC schedule 40 water pipe? correct answer: Cold Water distribution systems When can you use CPVC water pipe and fittings? correct