COSC 325 HOUSTON (PLUMBING) ACTUAL EXAM COMPLETE 200- QUESTIONS AND CORRECT DETAILED ANSWERS

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COSC 325 HOUSTON (PLUMBING) 2024-2025 ACTUAL EXAM COMPLETE 200-

QUESTIONS AND CORRECT DETAILED ANSWERS

SS

Ans: Sanitary Sewer

Quiz ABS

Ans: Black plastic material

Quiz VTR

Ans: vent through roof

Quiz Primary Purpose of roof vent

Ans: Let air into system

Quiz What division is plumbing

Ans: 22

Quiz Invert Depth

Ans: elevation of the bottom inside of the pipe

Quiz DW

Ans: Domestic Water

Quiz CPVC (chlorinated polyvinyl chloride)

Ans: hot and cold water supply, off white color

Quiz FDC

, Ans: Fire Department Connection

Quiz Above ground pipe material

Ans: Metal

Quiz 1 CFH (Cubic Feet per Hour)

Ans: 1000Btu/h

Quiz OSHA requirement for fall protection

Ans: 6 feet

Quiz OSHA requirement for trenching

Ans: 5 feet

Quiz Wall thickness terms for copper

Ans: Type L, K, M

Quiz DWV

Ans: abbreviation for drainage, waste, and vent. Found on "p" sheets

Quiz What are the four groups of plumbing pipe and fitting material?

Ans: Plastic, Copper, Cast Iron, Steel

Quiz What is Expansion loop for?

Ans: In plastic, provides an area for tubing to expand

Quiz What plastic pipe is common for DWV?

Ans: Schedule 40 ABS

Quiz What is the max length of rigid plastic DWV pipe?

Ans: 35'

Quiz What is ABS typically used for?

Ans: Sanitary drainage, vent, aboveground and underground storm water drainage.

Quiz What is PVC used for?

Ans: Sanitary drainage, vent, aboveground and underground storm drainage, water
mains, and water service lines. COLD WATER ONLY