What would be the low side elevation of a sewer drain that has a 1/16" per ft of grade and is 48.08 feet long and starts at an elevation of 96 ft?

• 1. 97.00 ft
• 2. 95.75 ft
• 3. 95.50 ft
• 4. 95.00 ft
• Math

Answer explanation

• The sewer drain starts at 96 feet.

• It drops a total of about 3 inches over 48.08 feet.

• Converting 3 inches to feet gives us 0.25 feet.

• Subtracting the drop from the starting elevation:

• So, the low side elevation is approximately 95.75 feet.

Where plumbing fixtures are installed on a floor with a finished floor elevation below the elevation of a manhole cover of the next upstream manhole in the public sewer, fixtures are protected by a backwater valve. Which of the following is required in a backflow valve?

• 1. water supply fixtures
• 2. pressure testing
• 3. cleanout
• 4. access
• 608.15

Answer explanation

In a hot water tank, temperature and pressure relief valves, or a combination of thereof, and energy cutoff devices shall have a temperature setting of not more than 210 degrees F and a working pressure of how many PSI?

• 1. 125
• 2. 200
• 3. 150
• 4. 210
• 504.5

According to the International Plumbing Code, every dry vent shall rise vertically opto a point not less than 6 inches above the flood level rim of the highest trap with > the exception of

• 1. interceptors located outdoors.
• 2. there is not an exception.
• 3. sports facilities shower.
• 4. sinks at a fast food restaurant.
• 905.4 Exception

What is the minimum air gap for sinks, laundry trays, gooseneck back faucets n and other fixtures with an effective opening of 1-1/4 inches?

• 1. 1 1/2 inches
• 2. 2 inches
• 3. 2 1/2 inches
• 4. 3 3/4 inches
• 802

According to the International Plumbing Code, a backwater valve is used to ก prevent drainage or waste from backing up into lower fixtures. Where shall the backwater valve be installed?

• 1. at a lower level fixture.
• 2. without any access.
• 3. in connection with a sanitary drainage.
• 4. in building drains subject to backflow.
• 202

Using Table 906.1 of the International Plumbing Code, what is the smallest diameter of vent if a vent that is 65 feet long is servicing a 4 inch waste stack?

• 1. 1 inch
• 2. 3 inches
• 3. 2 1/2 inches
• 4. 2 inches
• Table 906.1

Solvent cement not in color shall be applied to all joint surfaces.

• 1. purple
• 2. blue
• 3. orange
• 4. white
• 605

What is the maximum length of standpipes above trap weir?

• 1. 18
• 2. 24
• 3. 42
• 4. 48
• 802

According to the International Plumbing Code, what is the DFU value for a residential clothes washer?

• 1. 4 DFUS
• 2. 3 DFUS
• 3. 2 DFUS
• 4. 1 DFUS
• Table 709.1

Answer explanation

Tricky, given the code refers to these as automatic clothes washer and it is refered to as clothes washer