MEP systems final Questions with Detailed Verified
Answers
What are the typical piping support systems? Ans: ✓ ✓ ✓ Pipe strap, Hanger, Strut (Uni-strut or
Kindorf), Beam Clamp
Prevents backflow, requires pressure from fluid to allow mechanism to open Ans: ✓ ✓ ✓ Check
Valve
Typically, full way on or off, but can throttle flow. Also used to divert fluid (3-way, 4-way, etc.) Ans:
✓ ✓ ✓ Plug Valve
Use hard 90o turns, can be used to throttle flow, typically in water or gas supply lines Ans: ✓ ✓ ✓
Ball Valve
What are advantages and disadvantages of using PEX tubing instead of copper? Ans: ✓ ✓ ✓
Advantage: cost of material and easy installation
Disadvantage: Longevity and durability
What functions can different plumbing valves perform? Ans: ✓ ✓ ✓ Change direction of fluid flow,
connect pipes (or tubes) to each other, and regulates fluid flow.
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If a backhoe operator accidentally digs up a yellow plastic pipe while excavating a trench, he likely
just dug up a _____. Ans: ✓ ✓ ✓ Natural gas line
Why would you install drain tile at the footing of a building? Ans: ✓ ✓ ✓ To collect storm and
groundwater and divert them away from the building in the drainage system.
After the domestic cold water lines pass the meter, it typically will split and branch into multiple
locations. What are possible locations that the cold water will go to? Ans: ✓ ✓ ✓ Streight to
fixtures, to water heater, to boiler, to hose bibbs
What is black steel pipe used for? Ans: ✓ ✓ ✓ Gas piping, compressed air, and fire protection
What is the purpose of a pump station for a drainage system? Ans: ✓ ✓ ✓ Pumps the gravity fed
waste to a new elevation to allow it to continue flowing down the line
Why is IAQ such a difficult concept to understand and manage? Ans: ✓ ✓ ✓ There are few
rules/laws about IAQ, there are many variables involved in each situation, and IAQ concepts often
contradict equipment efficiency and LEED requirements
In plumbing terms, a device fastened to the ends of pipes (or tubes) to make connections between
individual pipes or tubes (often to create a change in direction of flow or capacity) is known as
what? Ans: ✓ ✓ ✓ A fitting
What is commissioning in regard to MEP systems? Ans: ✓ ✓ ✓ Final testing process to confirm that
all of the systems have been installed (or bult), are operating as designed
What are the 4 main pluming systems? Ans: ✓ ✓ ✓ Sanitary sewer, Gas piping, Storm drainage,
Domestic water
What could happen if your pluming vent piping wasn't sized large enough? Ans: ✓ ✓ ✓ System
may not drain properly, sediment could build up and clog, could have back pressure issues
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