Comprehensive Plumbing Systems and Code Knowledge for
Midterm Exam Newest 2026 Questions and Correct Detailed
Answers Already Graded A+
What are the sources of greywater? - CORRECT ANSWER-Sources of greywater
include water from sinks, showers, and washing machines.
What are the allowed uses of greywater? - CORRECT ANSWER-Allowed uses of
greywater include irrigation and toilet flushing.
What is the difference between Schedule 40 and Schedule 80 PVC? - CORRECT
ANSWER-Schedule 80 PVC has thicker walls and is used for higher pressure
applications compared to Schedule 40.
What are the four common plastic piping materials used for plumbing? -
CORRECT ANSWER-The four common plastic piping materials are PVC, CPVC,
PEX, and ABS.
What are the common uses of PVC, CPVC, PEX, and ABS? - CORRECT ANSWER-
PVC is used for drain, waste, and vent applications; CPVC is used for hot and cold
water distribution; PEX is used for water supply lines; ABS is used for drain, waste,
and vent applications.
, What are the different forms of water conditioning and their function? -
CORRECT ANSWER-Forms of water conditioning include filtration, softening,
and disinfection, each serving to improve water quality.
What are the four types of copper pipe? - CORRECT ANSWER-The four types of
copper pipe are Type K, Type L, Type M, and Type DWV.
What are the color designations for the four types of copper pipe? - CORRECT
ANSWER-Type K is green, Type L is blue, Type M is red, and Type DWV is yellow.
What is the order of thickest to thinnest for the four types of copper pipe? -
CORRECT ANSWER-The order from thickest to thinnest is Type K, Type L, Type
M, and then Type DWV.
What are the common street water main pressure ranges? - CORRECT
ANSWER-Common street water main pressure ranges from 40 to 80 psi.
What does a lavatory refer to? - CORRECT ANSWER-A lavatory refers to a sink
used for washing hands and face, typically found in bathrooms.
Midterm Exam Newest 2026 Questions and Correct Detailed
Answers Already Graded A+
What are the sources of greywater? - CORRECT ANSWER-Sources of greywater
include water from sinks, showers, and washing machines.
What are the allowed uses of greywater? - CORRECT ANSWER-Allowed uses of
greywater include irrigation and toilet flushing.
What is the difference between Schedule 40 and Schedule 80 PVC? - CORRECT
ANSWER-Schedule 80 PVC has thicker walls and is used for higher pressure
applications compared to Schedule 40.
What are the four common plastic piping materials used for plumbing? -
CORRECT ANSWER-The four common plastic piping materials are PVC, CPVC,
PEX, and ABS.
What are the common uses of PVC, CPVC, PEX, and ABS? - CORRECT ANSWER-
PVC is used for drain, waste, and vent applications; CPVC is used for hot and cold
water distribution; PEX is used for water supply lines; ABS is used for drain, waste,
and vent applications.
, What are the different forms of water conditioning and their function? -
CORRECT ANSWER-Forms of water conditioning include filtration, softening,
and disinfection, each serving to improve water quality.
What are the four types of copper pipe? - CORRECT ANSWER-The four types of
copper pipe are Type K, Type L, Type M, and Type DWV.
What are the color designations for the four types of copper pipe? - CORRECT
ANSWER-Type K is green, Type L is blue, Type M is red, and Type DWV is yellow.
What is the order of thickest to thinnest for the four types of copper pipe? -
CORRECT ANSWER-The order from thickest to thinnest is Type K, Type L, Type
M, and then Type DWV.
What are the common street water main pressure ranges? - CORRECT
ANSWER-Common street water main pressure ranges from 40 to 80 psi.
What does a lavatory refer to? - CORRECT ANSWER-A lavatory refers to a sink
used for washing hands and face, typically found in bathrooms.
