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
When calculating offsets, what must be given? - ANSWER-Offset(Base) and
Advance(altitude)
,When can you use PVC schedule 40 water pipe? - ANSWER-Cold Water
distribution systems
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 ( 1 1/2 for both fittings )
= 64 7/8"
Payment formula? - ANSWER-Payment = Base x Rate
Rate formula? - ANSWER-Rate = Payment divided by Base
, You estimated a job at $2195, you need $900 upfront, what is the percent
you collect upfront? - ANSWER-Answer = 41%
Rate = 900 divided by 2195 = 41%
When can you use CPVC water pipe and fittings? - ANSWER-Cold + Hot water
distribution water systems
What is the blue print symbol for cold water? - ANSWER-Long line - long line -
Long line -
Blue print symbol for hot water return line? - ANSWER-Long line short line
short line long line
Potable Water, Sanitary Drainage, Fuel Gas piping, Storm Water. Which one
is not included in Plumbing Systems in buildings? - ANSWER-Fuel Gas Piping
What is Galvanic action? - ANSWER-Electrolytic chemical reaction between
dissimilar metals such as copper and iron
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