Silly Boy
What can you use to ensure accuracy when laying out and measuring grade?
A level
What can a transit level do that a builder’s level cannot?
Tilt upward to measure angles from the vertical
Where should the target for a cold beam laser be placed on the pipe?
The center line of the pipe
What do you need to identify before you can verify the layout of a system?
All underground utilities
When setting up a builder’s level, the leveling screws should be _____.
turned in opposite directions
A string stretched taut along the planned piping route at the desired slope is called a(n)
grade line
Which of the following statements is true?
It is more difficult to route DWV piping around water supply piping than vice-versa.
The purpose of an invertible faceplate on a commercial water closet carrier is to _____.
ensure level placement while maintaining pitch in the drainage line
A water test requires the water level in the pipes to remain stationary for 15 minutes with the system subjected to a pressure of at least _____.
10 pounds of water
To properly secure a water cooler to a wall, use structural backing or _____.
a carrier
Why should bathtubs be fitted into place before the finished walls are up?
To account for their size
What should you do after locating the center line of the main stack?
Determine where the building drain will connect to the building sewer
What can plumbers use to locate fixture rough-ins and both aboveground and underground piping?
Submittal data
To calculate the load factor for a DWV system, you can use information contained in the _____.
applicable local code
What can you use to check the plumb of objects with a builder’s level _____.
The vertical crosshair
Often, the points from which all trades will measure within the structure are _____.
the north and east walls
The minimum standards for training programs in the United States are set by _____
From the local plumbing inspector
A negative aspect of lavatory carriers designed to be mounted directly on stud walls or masonry walls is _____.
poor structural strength
A pipe-sealing device that blocks fitting openings by expanding a rubber gasket is called a(n) _____.
mechanical test plug
when determining the location of the exit for the stack through the roof, project the laser beam through the center of the hole cut in the _____.
soleplate
To determine the approximate location of the water closet, consult the _____.
architectural floor plan
When connecting fixture drains, after cutting the pipe to the correct length, assemble the branch line starting from the _____.
sanitary tee
What is the first step when plumbing a building?
Locate the fixtures
To protect a pipe that will pass through a concrete footing, install a(n) _____.
sleeve
At the point where the stack penetrates the roof, vent flashing is installed to _____.
prevent rainwater from entering the building