Lesson 7 Designing and Installing Plumbing Systems Exam
| Question 1 | 5 / 5 points |
What is the minimum pressure for water supply piping?
Question options:
| 30 psi | |||
| 40 psi | |||
| 50 psi | |||
| 60 psi | |||
| Question 2 | 5 / 5 points | ||
What is the first step in a plumbing installation?
Question options:
| Installing the water meter | |||
| Installing the water heater | |||
| Connecting the building to the mains | |||
| Running pipe through the building | |||
| Question 3 | 5 / 5 points | ||
Which type of venting is considered the best?
Question options:
| Unit | |||
| Circuit | |||
| Individual | |||
| Wet | |||
| Question 4 | 5 / 5 points | ||
How are galvanized pipes connected?
Question options:
| Cementing | |||
| Soldering | |||
| Welding | |||
| Screwing | |||
| Question 5 | 0 / 5 points | ||
What is commonly used to produce openings for pipes when pouring concrete floors?
Question options:
| Drill | |||
| Can | |||
| Auger | |||
| Mold | |||
| Question 6 | 5 / 5 points | ||
What is added to the frame studs of the house to create extra room for the stack?
Question options:
| Padding | |||
| Studs | |||
| Furring | |||
| Spacers | |||
| Question 7 | 5 / 5 points | ||
In DWV piping, where are cleanouts required?
Question options:
| At each change in direction greater than 90° | |||
| At each change in direction | |||
| At each change in direction over 22° | |||
| At each change in direction over 45° | |||
| Question 8 | 0 / 5 points | ||
What is the maximum horizontal distance the trap for a shower with a two-inch drain can be from the vent?
Question options:
| 2 feet | |||
| 3 feet | |||
| 4 feet | |||
| 5 feet | |||
| Question 9 | 5 / 5 points | ||
What is the maximum height for a sink that will be used by people with physical disabilities?
Question options:
| 24 inches | |||
| 34 inches | |||
| 44 inches | |||
| 54 inches | |||
| Question 10 | 5 / 5 points | ||
How many cross connections are permitted in a DWV system?
Question options:
| 0 | |||
| 1 | |||
| 2 | |||
| 3 | |||
| Question 11 | 0 / 5 points | ||
How far should a stub-out extend through a finished wall?
Question options:
| 1 inch | |||
| 2 inches | |||
| 3 inches | |||
| 4 inches | |||
| Question 12 | 5 / 5 points | ||
Which of the following areas will have support boards called blocking?
Question options:
| Ceilings | |||
| Floors | |||
| Wall studs | |||
| Concrete floors | |||
| Question 13 | 5 / 5 points | ||
What is the minimum drop for DWV piping?
Question options:
| 1/8˝ per foot | |||
| 1/6˝ per foot | |||
| 1/4˝ per foot | |||
| 1/2˝ per foot | |||
| Question 14 | 0 / 5 points | ||
If part of a joist is notched, how should it be reinforced?
Question options:
| Double header | |||
| Metal reinforcement | |||
| Blocking | |||
| Double joist | |||
| Question 15 | 0 / 5 points | ||
What pipes are placed first during installation?
Question options:
| Water supply | |||
| DWV branches | |||
| Stacks | |||
| Water supply branches | |||
| Question 16 | 5 / 5 points | ||
When joining iron pipe, how much lead is used per inch of pipe diameter?
Question options:
| 1 pound | |||
| 1 kilogram | |||
| 2 pounds | |||
| 2 kilograms | |||
| Question 17 | 0 / 5 points | ||
How far apart should supports for horizontal runs of plastic pipe be at a minimum?
Question options:
| 2 feet | |||
| 3 feet | |||
| 4 feet | |||
| 5 feet | |||
| Question 18 | 5 / 5 points | ||
What is installed around the top of a stack to prevent leaking?
Question options:
| Flashing | |||
| Insulation | |||
| Shingles | |||
| Gasket | |||
| Question 19 | 5 / 5 points | ||
What act of 1990 states that restrooms must be designed to be handicap accessible?
Question options:
| AHR | |||
| ADE | |||
| AHR | |||
| ADA | |||
| Question 20 | 5 / 5 points | ||
What is commonly used to support a sewer line?
Question options:
| Gravel | |
| Dirt | |
| Sand | |
| Cement |
What tool is needed to cut a hole for a 4-inch stack?
Question 1 options:
| Spade bit | |
| Saber saw | |
| Hole saw | |
| Auger |
Which method of measuring pipe is the most accurate?
Question 8 options:
| Shoulder-to-shoulder | |
| Face-to-face | |
| End-to-end | |
| Center-to-center |
What is the load factor of a lavatory?
Question 10 options:
| 0 | |
| 1 | |
| 2 | |
| 3 |
Who is responsible for installing the water meter?
Question 11 options:
| The plumber | |
| A contractor | |
| An inspector | |
| A city worker |
What is the maximum height for a water closet seat that will be used by people with physical disabilities?
Question 17 options:
| 17 inches | |
| 18 inches | |
| 19 inches | |
| 20 inches |
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