COSC 325 HOUSTON (PLUMBING) QUESTIONS AND ANSWERS SOLVED 100% CORRECT.
SS - (ANSWER)Sanitary Sewer
ABS - (ANSWER)Black plastic material
VTR - (ANSWER)vent through roof
Primary Purpose of roof vent - (ANSWER)Let air into system
What division is plumbing - (ANSWER)22
Invert Depth - (ANSWER)elevation of the bottom inside of the pipe
DW - (ANSWER)Domestic Water
CPVC (chlorinated polyvinyl chloride) - (ANSWER)hot and cold water supply, off white color
FDC - (ANSWER)Fire Department Connection
Above ground pipe material - (ANSWER)Metal
1 CFH (Cubic Feet per Hour) - (ANSWER)1000Btu/h
OSHA requirement for fall protection - (ANSWER)6 feet
OSHA requirement for trenching - (ANSWER)5 feet
Wall thickness terms for copper - (ANSWER)Type L, K, M
, COSC 325 HOUSTON (PLUMBING) QUESTIONS AND ANSWERS SOLVED 100% CORRECT.
DWV - (ANSWER)abbreviation for drainage, waste, and vent. Found on "p" sheets
What are the four groups of plumbing pipe and fitting material? - (ANSWER)Plastic, Copper, Cast Iron,
Steel
What is Expansion loop for? - (ANSWER)In plastic, provides an area for tubing to expand
What plastic pipe is common for DWV? - (ANSWER)Schedule 40 ABS
What is the max length of rigid plastic DWV pipe? - (ANSWER)35'
What is ABS typically used for? - (ANSWER)Sanitary drainage, vent, aboveground and underground
storm water drainage.
What is PVC used for? - (ANSWER)Sanitary drainage, vent, aboveground and underground storm
drainage, water mains, and water service lines. COLD WATER ONLY
What is cpvc used for? - (ANSWER)Typically used for HW and CW distribution, Fire sprinkler pipes, water
distribution
What is PEX used for? - (ANSWER)Water service piping, CW and HW systems, used commonly in
residential
Hangers typically take up ___ of labor cost - (ANSWER)20%
What is Copper pipe used for? - (ANSWER)Water supply, fire suppression, HVAC. Fairly rare.
What is Cast-Iron no-hub and bell-and-spigot used for? - (ANSWER)aboveground and underground
sanitary drain, vent, and storm water drainage. Bell and spigot typically underground
SS - (ANSWER)Sanitary Sewer
ABS - (ANSWER)Black plastic material
VTR - (ANSWER)vent through roof
Primary Purpose of roof vent - (ANSWER)Let air into system
What division is plumbing - (ANSWER)22
Invert Depth - (ANSWER)elevation of the bottom inside of the pipe
DW - (ANSWER)Domestic Water
CPVC (chlorinated polyvinyl chloride) - (ANSWER)hot and cold water supply, off white color
FDC - (ANSWER)Fire Department Connection
Above ground pipe material - (ANSWER)Metal
1 CFH (Cubic Feet per Hour) - (ANSWER)1000Btu/h
OSHA requirement for fall protection - (ANSWER)6 feet
OSHA requirement for trenching - (ANSWER)5 feet
Wall thickness terms for copper - (ANSWER)Type L, K, M
, COSC 325 HOUSTON (PLUMBING) QUESTIONS AND ANSWERS SOLVED 100% CORRECT.
DWV - (ANSWER)abbreviation for drainage, waste, and vent. Found on "p" sheets
What are the four groups of plumbing pipe and fitting material? - (ANSWER)Plastic, Copper, Cast Iron,
Steel
What is Expansion loop for? - (ANSWER)In plastic, provides an area for tubing to expand
What plastic pipe is common for DWV? - (ANSWER)Schedule 40 ABS
What is the max length of rigid plastic DWV pipe? - (ANSWER)35'
What is ABS typically used for? - (ANSWER)Sanitary drainage, vent, aboveground and underground
storm water drainage.
What is PVC used for? - (ANSWER)Sanitary drainage, vent, aboveground and underground storm
drainage, water mains, and water service lines. COLD WATER ONLY
What is cpvc used for? - (ANSWER)Typically used for HW and CW distribution, Fire sprinkler pipes, water
distribution
What is PEX used for? - (ANSWER)Water service piping, CW and HW systems, used commonly in
residential
Hangers typically take up ___ of labor cost - (ANSWER)20%
What is Copper pipe used for? - (ANSWER)Water supply, fire suppression, HVAC. Fairly rare.
What is Cast-Iron no-hub and bell-and-spigot used for? - (ANSWER)aboveground and underground
sanitary drain, vent, and storm water drainage. Bell and spigot typically underground
