ELECTRICAL AND PLUMBING SYSTEMS EXAM QUESTIONS WITH COMPLETE SOLUTIONS

ELECTRICAL AND PLUMBING SYSTEMS EXAM
QUESTIONS WITH COMPLETE SOLUTIONS


THE DISTANCE FROM THE TRAP TO THE VENT IS
CALLED ____ AS GENERAL RULE OF THUMB, A 1 1/2"
FIXTURE DRAIN CAN HAVE TYHE TRAP ARM ____ AND
A 2" CAN HAVE ____
1. TRAP ARM
2. 3'6"
3. 5'
IF MORE THAN ONE FIXTURE IS ON THE LINE IT MUST
BE _____
VENTED
SLOPE ALL PIPES __
1/4" PER FOOT
ON STACKS, ____ MAY BE USED FOR BRANCHES
SANITARY TEES
BRANCH SOIL WASTE PIPES MAY BE MADE OF:
. IRON
. BRASS
. GALVANIZED STEEL
. COPPER
. ABS PLASTIC
. PVC PLASTIC

,A VENT PIPE HAS 2 PURPOSES:
. FRESH AIR
. PREVENT SIPHON BACK PRESSURE
A VENT STACK IS CONNECTED TO THE SOIL OR
WASTE STACK WITH A WYE FITTING____
AT OR BELOW THE LOWEST BRANCH
VENT STACKS ALSO CALLLED___ MAY CONNECT
BACK TO THE MAIN STACK AS LONG AS ITS AT LEAST
___ ABOVE THE HIGHEST FIXTURE
1. REVENTS
2. 3'
THE SIZE OF THE VENT PIPE NEEDS TO BE AT LEAST
____ OF THE WASTE PIPE
1/2 THE SIZE
A___ IS THE CONTINUATION OF THE VERTICAL
WASTE PIPE UP, PAST THE FIXTURE AND BACK INTO
THE A BRANCH VENT, VENT STACK, OR STACK VENT.
ITS ALSO KNOWN AS____
1. CONTINOUS
2. BACK VENT
THE TEE IN THE WASTE PIPE MUST NOT BE
PLACED____ OR SIPHONAGE MAY OCCUR
BELOW TRAP

, IN BACK VENTING, THE VERTICAL PIPE IS____ AND
SHOULD EXTEND AT LEAST 3' ABOVE THE FIXTURE
BEFORE CONNECTING TO THE BRANCH VENT.
CLOSE TO THE FIXTURE TRAP
A____ IS VENT USED ONLY IN 2 STORY BUILDINGS,
THE VENT FOR ONE FIXTURE IS USED AS A DRAIN BY
THE FIXTURE ABOVE
WET VENT
KEEP IN MIND THAT___ ARE NO LONGER LEGAL,
INSTALL YOUR PLUMBING TO RECIEVE A ____
1. FULL STRAPS
2. PEE TRAP
WHEN IT COMES TO A TRAP, WHAT IS THE DIFFRENCE
BETWEEN BACK PRESSURE AND SIPHONAGE?
. BACK PRESSURE IS CREATED NEAR THE BASE OF
THE STACK BY WATER SLUG
. SIPHONAGE IS CREATED BY VACUUM PULLING
BACK PRESSURE IS PREVENTED BY:
INSTALLING VENT IN THE STACK BELOW LOWEST
FIXTURE
THE FITTING AT THE BASE OF THE STACK AFFECTS
THE____ AT THAT POINT. A COMBINATION _____ IS
BETTER. A ____ IS THE BEST