COSC 325 - MEP – Plumbing exam with ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
correct answers ||\\||\\
What does a Drainage Fixture Unit (DFU) represent in plumbing design?
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
A unit that expresses the probable discharge of wastewater and waterborne waste into a
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
drainage system ||\\||\\
To ensure accessibility for maintenance, where must cleanouts be installed in a sanitary
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
drainage system? (Select all that apply) ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
- ||\\||\\ At every size change in piping system
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
- ||\\||\\ At the connection of building sewer and building drain
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
- ||\\||\\ At the base of all vertical soil or waste stacks
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
- ||\\||\\ Upper terminal of all horizontal branch drain ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
- ||\\||\\ At all bend ||\\||\\ ||\\||\\
- ||\\||\\ At all 90-degree changes in direction
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
When wastewater discharges rapidly, negative pressure can siphon water out of traps,
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
allowing sewer gases to enter the building. Which component prevents this by admitting air ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
into the drainage system? ||\\||\\ ||\\||\\ ||\\||\\
P-Trap
Which is/are a part of Sanitary Sewer System? (Select all that apply)
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
- Drains ||\\||\\
- Clean Outs
||\\||\\ ||\\||\\
- P-Trap ||\\||\\
Which of the following are general purposes of sanitary drainage vent piping? (Select all that
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
apply)
||\\||\\
- ||\\||\\ Maintains Atmospheric Pressure ||\\||\\ ||\\||\\
- ||\\||\\ Allows Wastewater to flow freely through pipes ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
- ||\\||\\ Provides Air circulation within sanitary drainage piping ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
- ||\\||\\ Removes objectionable gases from the sanitary drainage system ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
- ||\\||\\ Ensures that trap seals will not be lost due to siphonage and back pressure ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
, A vent terminal should be located at least _____________ from windows, doors, or other
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
ventilation openings. ||\\||\\
10'
If horizontal drainage piping is not installed at the correct slope, solids may settle and cause
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
blockages. What is the standard slope (per foot of run) that ensures both flow and self- ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
cleaning velocity? (Select all that apply) ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
- 1/4"
||\\||\\
- 1/8"
||\\||\\
If a floor drain is located in a rarely used mechanical room, its trap might dry out, allowing
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
sewer gases to escape. Which device automatically supplies water to maintain the trap seal?
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
Trap Primer ||\\||\\
Which Country first introduced flushing toilets? ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
England
Your shower is draining slowly, and you suspect the problem is in the sanitary sewer line.
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
Which component provides access to clear the blockage and perform maintenance?
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
Cleanout
AAV stands for _________. ||\\||\\ ||\\||\\ ||\\||\\
Air Admittance Valve
||\\||\\ ||\\||\\
Which type of pipe hanger is most suitable for supporting insulated pipes?
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
Clevis Hanger ||\\||\\
Which of the following materials are commonly used to manufacture P-traps? (Select all that
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
apply)
- Cast Brass
||\\||\\ ||\\||\\
- Chrome-plated tubular brass
||\\||\\ ||\\||\\ ||\\||\\
- DWV Plastic
||\\||\\ ||\\||\\
Heavy rain is causing water to pool on the roof of a building. Which plumbing component
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
ensures this stormwater is safely directed into a downspout instead of entering the sanitary
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
sewer system? ||\\||\\
Roof Drain ||\\||\\
correct answers ||\\||\\
What does a Drainage Fixture Unit (DFU) represent in plumbing design?
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
A unit that expresses the probable discharge of wastewater and waterborne waste into a
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
drainage system ||\\||\\
To ensure accessibility for maintenance, where must cleanouts be installed in a sanitary
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
drainage system? (Select all that apply) ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
- ||\\||\\ At every size change in piping system
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
- ||\\||\\ At the connection of building sewer and building drain
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
- ||\\||\\ At the base of all vertical soil or waste stacks
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
- ||\\||\\ Upper terminal of all horizontal branch drain ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
- ||\\||\\ At all bend ||\\||\\ ||\\||\\
- ||\\||\\ At all 90-degree changes in direction
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
When wastewater discharges rapidly, negative pressure can siphon water out of traps,
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
allowing sewer gases to enter the building. Which component prevents this by admitting air ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
into the drainage system? ||\\||\\ ||\\||\\ ||\\||\\
P-Trap
Which is/are a part of Sanitary Sewer System? (Select all that apply)
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
- Drains ||\\||\\
- Clean Outs
||\\||\\ ||\\||\\
- P-Trap ||\\||\\
Which of the following are general purposes of sanitary drainage vent piping? (Select all that
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
apply)
||\\||\\
- ||\\||\\ Maintains Atmospheric Pressure ||\\||\\ ||\\||\\
- ||\\||\\ Allows Wastewater to flow freely through pipes ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
- ||\\||\\ Provides Air circulation within sanitary drainage piping ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
- ||\\||\\ Removes objectionable gases from the sanitary drainage system ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
- ||\\||\\ Ensures that trap seals will not be lost due to siphonage and back pressure ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
, A vent terminal should be located at least _____________ from windows, doors, or other
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
ventilation openings. ||\\||\\
10'
If horizontal drainage piping is not installed at the correct slope, solids may settle and cause
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
blockages. What is the standard slope (per foot of run) that ensures both flow and self- ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
cleaning velocity? (Select all that apply) ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
- 1/4"
||\\||\\
- 1/8"
||\\||\\
If a floor drain is located in a rarely used mechanical room, its trap might dry out, allowing
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
sewer gases to escape. Which device automatically supplies water to maintain the trap seal?
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
Trap Primer ||\\||\\
Which Country first introduced flushing toilets? ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
England
Your shower is draining slowly, and you suspect the problem is in the sanitary sewer line.
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
Which component provides access to clear the blockage and perform maintenance?
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
Cleanout
AAV stands for _________. ||\\||\\ ||\\||\\ ||\\||\\
Air Admittance Valve
||\\||\\ ||\\||\\
Which type of pipe hanger is most suitable for supporting insulated pipes?
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
Clevis Hanger ||\\||\\
Which of the following materials are commonly used to manufacture P-traps? (Select all that
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
apply)
- Cast Brass
||\\||\\ ||\\||\\
- Chrome-plated tubular brass
||\\||\\ ||\\||\\ ||\\||\\
- DWV Plastic
||\\||\\ ||\\||\\
Heavy rain is causing water to pool on the roof of a building. Which plumbing component
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
ensures this stormwater is safely directed into a downspout instead of entering the sanitary
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
sewer system? ||\\||\\
Roof Drain ||\\||\\
