what is the highest part of the lower interior surface of a trap
What is the trap weir
100
what is the type of tubing that cannot have tees extracted from it
What is type m
100
what does the abbreviation NPS stand for
What is nominal pipe size
100
top guard rails must be _________ above the working level
what is 36" to 42"
200
what is a vent pipe that serves 2 or more fixtures and is an extension of a wet vent
What is a continuous vent
200
what is a water distribution pipe that extends through at least one full storey
What is a riser
200
what is the color code for piping for copper drainage systems
What is yellow
200
what is the increment that store bought nipples come in
What is 1\2"
200
a lifeline must have the strength of _______ diameter polypropylene fiber rope
what is 5/8"
300
what is a vent pipe that connects the top of a soil-or-waste stack to a vent header or to outside air
What is a stack vent
300
what check valve is designed for use in a gravity drainage system
What is a back water valve
300
what is the main disadvantage of copper as a piping material
What is expansion
300
what is the proper amount of turns by wrench when wrenching a tee onto a length of 1/2" black pipe
What is 3
300
where is the safest place to be during a lightning storm
what is a house or building
400
what is a vent pipe that connects any combination of stack vents or vent stacks to outside air
What is a vent header
400
what is an angle of less than 45 degrees with the horizontal
What is nominally horizontal
400
what is the chemical symbol for type L copper
What is Cu
400
what kind of fitting is to be used when connecting copper pipe to black steel pipe
What is a dielectric union
400
what does WHMIS stand for
workplace hazardous materials information system
500
what is a vent pipe that is used in conjunction with a circuit vent to provide additional air circulation between a drainage system and a venting system
What is a relief vent
500
what is an access provided in drainage and venting systems to provide for cleaning and inspection services
What is a cleanout
500
what is the 2 types of copper tube that shall not be bent
What is dwv and m
500
a bolt has a ________ thread
what is parallel
500
if thunder is heard 3 seconds after a flash, how far away is the lightning