CON 353 Final Exam CSU Question
and answers verified to pass
2025/2026
Week 10 - Plumbing Systems - correct answer ✔
Know the testing requirements for waste & supply for rough plumbing - correct answer ✔Water test:
- Each section must be filled with water to a point not less than 10 feet above the highest fitting
connection in that section, or to the highest point in the completed system.
-Water shall be held in the section for 15 minutes.
Air test:
Test maintained at a gauge pressure of 5 pounds per square inch (psi) -- without introduction of
additional air for a period of 15 minutes.
Know why we vent our plumbing systems - correct answer ✔- Prevent a siphon that could dry out the
traps.
- Allow building drains to flow freely -- avoiding the vacuum and slow drainage that would otherwise
occur at fixtures.
Know why p traps are installed in the DWV system - correct answer ✔Prevents sewer gasses from
entering the home
Know what backflow prevention is - correct answer ✔Preventing reversal of flow of non-potable water
or other substances through a cross-connection
Understand the different types of backflow prevention devices - - correct answer ✔- Air gap: EX: A
faucet spout terminates above the flood rim level of the sink or tub
, - Vacuum breakers: Assembly that breaks the vacuum through an air gap
- Check valves: One-way valve that allows water to flow in one direction
Understand what the role of BIM coordination has for the MEP systems - correct answer ✔Software
used to map out MEP systems and eliminate conflicts with foundations and systems
Understand what carriers are used for in our plumbing rough systems - correct answer ✔Used as
mounting brackets installed in the wall cavity designed to support the load of the fixture
Week 11 - Electrical Systems - correct answer ✔
Understand how power is distributed through small buildings - correct answer ✔Transformer -->
Meter -->
Branch Circuits
Understand how power is distributed through large buildings - correct answer ✔Transformer -->
Meter -->
Switchgear -->
Bus/Feeder -->
Transformer -->
Branch Panel -->
Branch Circuits Feeding Floor
Understand how amperage and wire gauge relate - correct answer ✔INCREASE in wire gauge --> LESS
amperage allowed
and answers verified to pass
2025/2026
Week 10 - Plumbing Systems - correct answer ✔
Know the testing requirements for waste & supply for rough plumbing - correct answer ✔Water test:
- Each section must be filled with water to a point not less than 10 feet above the highest fitting
connection in that section, or to the highest point in the completed system.
-Water shall be held in the section for 15 minutes.
Air test:
Test maintained at a gauge pressure of 5 pounds per square inch (psi) -- without introduction of
additional air for a period of 15 minutes.
Know why we vent our plumbing systems - correct answer ✔- Prevent a siphon that could dry out the
traps.
- Allow building drains to flow freely -- avoiding the vacuum and slow drainage that would otherwise
occur at fixtures.
Know why p traps are installed in the DWV system - correct answer ✔Prevents sewer gasses from
entering the home
Know what backflow prevention is - correct answer ✔Preventing reversal of flow of non-potable water
or other substances through a cross-connection
Understand the different types of backflow prevention devices - - correct answer ✔- Air gap: EX: A
faucet spout terminates above the flood rim level of the sink or tub
, - Vacuum breakers: Assembly that breaks the vacuum through an air gap
- Check valves: One-way valve that allows water to flow in one direction
Understand what the role of BIM coordination has for the MEP systems - correct answer ✔Software
used to map out MEP systems and eliminate conflicts with foundations and systems
Understand what carriers are used for in our plumbing rough systems - correct answer ✔Used as
mounting brackets installed in the wall cavity designed to support the load of the fixture
Week 11 - Electrical Systems - correct answer ✔
Understand how power is distributed through small buildings - correct answer ✔Transformer -->
Meter -->
Branch Circuits
Understand how power is distributed through large buildings - correct answer ✔Transformer -->
Meter -->
Switchgear -->
Bus/Feeder -->
Transformer -->
Branch Panel -->
Branch Circuits Feeding Floor
Understand how amperage and wire gauge relate - correct answer ✔INCREASE in wire gauge --> LESS
amperage allowed
