# Plumbing And Sanitary Quiz Set B Exam Mode

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Quizzes Created: 6 | Total Attempts: 3,424
Questions: 80 | Attempts: 215

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• 1.

### Fixture UNIT VALUE of a Bathtub

• A.

1

• B.

1.5

• C.

2

• D.

3

C. 2
Explanation
The given options represent different unit values for a bathtub fixture. The unit value is a measure of the quality or functionality of the fixture. Among the options provided, the unit value of 2 is the most suitable choice for a bathtub fixture.

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• 2.

### Fixture UNIT VALUE of a Kitchen Sink

• A.

1

• B.

1.5

• C.

2

• D.

3

C. 2
Explanation
The given options represent different unit values for a kitchen sink fixture. The correct answer is 2, which means that the unit value of the kitchen sink fixture is 2.

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• 3.

### Fixture UNIT VALUE of a Floor Drain

• A.

1

• B.

1.5

• C.

2

• D.

3

A. 1
Explanation
The given options represent different values for the fixture unit of a floor drain. The fixture unit is a measurement used to determine the flow rate and drainage capacity of plumbing fixtures. In this case, the correct answer is 1, which means that the floor drain has a fixture unit value of 1. This suggests that the floor drain has a relatively low flow rate and drainage capacity compared to other plumbing fixtures.

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• 4.

### Fixture UNIT VALUE of a Residential Sink

• A.

1

• B.

1.5

• C.

2

• D.

3

B. 1.5
Explanation
The correct answer is 1.5 because the question is asking for the fixture UNIT VALUE of a residential sink, and out of the given options, 1.5 is the only value that represents the unit value of a sink. The other options do not match the unit value of a sink and are therefore incorrect.

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• 5.

### Fixture UNIT VALUE of a Laundry Tub

• A.

1

• B.

1.5

• C.

2

• D.

3

C. 2
Explanation
The correct answer is 2 because it is the most appropriate unit value for a laundry tub. The other options, 1, 1.5, and 3, are either too small or too large to accurately represent the value of a laundry tub. Therefore, 2 is the most suitable option.

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• 6.

### Fixture UNIT VALUE of a Shower Bath

• A.

1

• B.

1.5

• C.

2

• D.

3

C. 2
Explanation
The correct answer is 2. This suggests that the fixture UNIT VALUE of a Shower Bath is 2.

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• 7.

### Fixture UNIT VALUE of a Slop Sink

• A.

1

• B.

1.5

• C.

2

• D.

3

D. 3
Explanation
The correct answer is 3 because the given options are the unit values for a slop sink fixture. Out of the options provided, 3 is the correct value for the unit value of a slop sink fixture.

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• 8.

### Fixture UNIT VALUE of a Public or Hotel Sink

• A.

1

• B.

1.5

• C.

2

• D.

3

C. 2
Explanation
The given options represent different fixture unit values for a public or hotel sink. Fixture unit values are used to determine the water flow rate and drainage requirements for plumbing systems. The correct answer is 2, which means that this particular sink has a fixture unit value of 2. This value indicates that the sink requires a moderate amount of water flow and drainage capacity compared to the other options provided.

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• 9.

### Fixture UNIT VALUE for every 15 square foot of roof drain

• A.

1

• B.

1.5

• C.

2

• D.

3

A. 1
Explanation
The given answer is 1 because the statement mentions that there is a "Fixture UNIT VALUE for every 15 square foot of roof drain." This implies that for every 15 square foot of roof drain, the value of the fixture unit is 1. Therefore, the correct answer is 1.

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• 10.

### Fixture UNIT VALUE of ONE Bathroom consisting of 1 water closet, lavatory, bathtub and overhead shower or water closet, lavatory and shower compartment.

• A.

3

• B.

5

• C.

6

• D.

8

D. 8
Explanation
The given statement states that the fixture unit value of a bathroom consisting of 1 water closet, lavatory, bathtub, and overhead shower or water closet, lavatory, and shower compartment is 8. This means that this particular bathroom setup has a higher fixture unit value compared to other setups with fewer fixtures. The higher fixture unit value indicates that this setup requires more water supply and drainage capacity, possibly due to the presence of multiple fixtures that need to be supplied with water and drained properly.

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• 11.

### Fixture UNIT VALUE of a Combination Fixture

• A.

3

• B.

5

• C.

6

• D.

8

A. 3
Explanation
The given combination fixture has four values: 3, 5, 6, and 8. The question asks for the "Fixture UNIT VALUE," which means it is looking for the smallest value among the given options. Out of the four values, 3 is the smallest, making it the correct answer.

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• 12.

### Fixture UNIT VALUE of a Urinal

• A.

3

• B.

5

• C.

6

• D.

8

B. 5
Explanation
The given options represent different values for the fixture unit of a urinal. The fixture unit is a measure of the flow rate or drainage capacity of a plumbing fixture. In this case, the correct answer is 5, which means that the urinal has a fixture unit value of 5. This value indicates the amount of water that can be drained by the urinal in a given time period.

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• 13.

### Fixture UNIT VALUE of a Water Closet

• A.

3

• B.

5

• C.

6

• D.

8

C. 6
Explanation
The correct answer is 6. In the context of plumbing fixtures, a water closet refers to a toilet. The "fixture unit value" is a measurement that indicates the flow rate and drainage capacity of a fixture. A water closet typically has a fixture unit value of 6, which means it can handle a relatively high flow rate and drainage capacity compared to other fixtures.

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• 14.

### A type of house drain that receives the discharge of sanitary and domestic wastes only. the waste is conveyed on a septic tank or public sewer.

• A.

Combined Drain

• B.

Storm Drain

• C.

Industrial Drain

• D.

Sanitary Drain

D. Sanitary Drain
Explanation
A sanitary drain is a type of house drain that is specifically designed to receive and carry only sanitary and domestic wastes. This means that it is meant to handle the discharge of wastewater from toilets, sinks, showers, and other similar sources. The waste is then conveyed either to a septic tank or a public sewer system for further treatment and disposal. Unlike other types of drains, such as combined drains or storm drains, a sanitary drain is not meant to handle other types of waste, such as stormwater or industrial waste.

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• 15.

### A type of house drain that receives discharges of sanitary waste as well as storm water. this is the oldest form of house drain and NO longer permitted.

• A.

Combined Drain

• B.

Storm Drain

• C.

Industrial Drain

• D.

Sanitary Drain

A. Combined Drain
Explanation
A combined drain is a type of house drain that receives both sanitary waste and storm water. However, this form of house drain is no longer permitted. This means that it is no longer allowed to be used or installed in buildings. The reasons for this could include concerns about contamination of water sources or the potential for overload during heavy rainfall events.

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• 16.

### It conveys all storm clear water or surface water waste except sanitary wastes. it terminates into lakes, rivers, or natural basins.

• A.

Combined Drain

• B.

Storm Drain

• C.

Industrial Drain

• D.

Sanitary Drain

B. Storm Drain
Explanation
A storm drain is a type of drain that is designed to collect and carry away stormwater or surface water waste. It is separate from sanitary drains, which carry away wastewater from toilets, sinks, and other sources. Storm drains usually terminate into lakes, rivers, or natural basins, allowing the water to be safely discharged into the environment. This helps prevent flooding and ensures that stormwater does not mix with sanitary waste, which could contaminate water sources.

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• 17.

### A house drain that receives discharges from industrial equipment that contain some objectionable acid wastes.

• A.

Combined Drain

• B.

Storm Drain

• C.

Industrial Drain

• D.

Sanitary Drain

C. Industrial Drain
Explanation
The correct answer is Industrial Drain because it specifically mentions that the drain receives discharges from industrial equipment that contain objectionable acid wastes. This suggests that the drain is specifically designed to handle industrial waste and is not meant for stormwater or sanitary purposes.

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• 18.

### A portion of the plumbing system that receives discharges of all soil and waste stacks within the building, and conveys the same to the house sewer.

• A.

House Drain

• B.

Soil Drain

• C.

Waste Drain

• D.

Main Drain

A. House Drain
Explanation
The house drain is a portion of the plumbing system that collects and carries all the waste and soil from the building to the house sewer. It receives discharges from all the soil and waste stacks within the building, ensuring that the waste is properly disposed of. This is different from the soil drain, waste drain, and main drain, which may have specific functions within the plumbing system but do not necessarily receive all the discharges from the building.

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• 19.

### Reduces the action scouring action in the pipe, thus the solid waste are carried along the bottom of the pipe.

• A.

House Drain

• B.

Oversize House Drain

• C.

Floor Drain

• D.

Catch Basin

B. Oversize House Drain
Explanation
An oversize house drain reduces the scouring action in the pipe, which means that the flow of water is slower and less forceful. This allows solid waste to settle and be carried along the bottom of the pipe instead of being carried away with the water.

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• 20.

### Is a device designed to convey wastes from garage, wash rack, grease pits and repair floors into the house drain.

• A.

Yard Catch Basin

• B.

Grease Basin

• C.

Garage Catch Basin

• D.

Catch Basin

C. Garage Catch Basin
Explanation
A garage catch basin is a device specifically designed to transport waste materials from areas such as garages, wash racks, grease pits, and repair floors into the main drain system of a house. It serves as a collection point for these wastes, preventing them from contaminating the surrounding environment and ensuring proper disposal. This type of catch basin is specifically designed for use in garages, making it the correct answer in this context.

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• 21.

### It is a receptacle used to receive water to be drained from the floor into the plumbing system.

• A.

House Drain

• B.

Oversize House Drain

• C.

Floor Drain

• D.

Catch Basin

C. Floor Drain
Explanation
A floor drain is a type of receptacle that is designed to collect and drain water from the floor into the plumbing system. It is commonly used in areas such as bathrooms, basements, and garages where water may accumulate. The purpose of a floor drain is to prevent water damage and ensure proper drainage, keeping the area clean and dry.

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• 22.

### Consists of a running trap installed under the basement floor to protect it from freezing

• A.

Floor Drain

• B.

Oversize House Drain

• C.

Area Drain

• D.

Floor Basin

C. Area Drain
Explanation
An area drain is a type of drainage system that is typically installed outdoors, such as in a yard or parking lot. It is designed to collect and remove excess water from the surface, preventing flooding or water damage. In this context, the area drain is installed under the basement floor to protect it from freezing. This suggests that the area drain is specifically designed to handle the drainage needs of the basement area and prevent freezing, making it the correct answer.

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• 23.

### Is a device used in kitchens serving hotels, dining rooms, clubhouses and restaurants.

• A.

Yard Catch Basin

• B.

Grease Basin

• C.

Garage Catch Basin

• D.

Oil Catch Basin

B. Grease Basin
Explanation
A grease basin is a device used in kitchens serving hotels, dining rooms, clubhouses, and restaurants. It is specifically designed to collect and trap grease and oil from cooking and food preparation activities. This helps to prevent the grease from clogging the plumbing system and causing blockages. The grease basin is typically located near the cooking area and is easily accessible for cleaning and maintenance. It plays a crucial role in maintaining hygiene and preventing environmental pollution by effectively managing and disposing of grease and oil waste in commercial kitchen settings.

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• 24.

### Is a  receptacle used to catch surface water drained from cemented courts, driveways, and yards.

• A.

Yard Catch Basin

• B.

Yard Drain

• C.

Garage Catch Basin

• D.

Exterior Basin

A. Yard Catch Basin
Explanation
A yard catch basin is a receptacle used to catch surface water drained from cemented courts, driveways, and yards. It is designed to collect and hold water, preventing it from pooling or causing damage to the surrounding area. This type of catch basin is specifically intended for use in yards and outdoor spaces, where it can effectively manage excess water and prevent flooding or erosion.

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• 25.

### What is the MAXIMUM number of fixture units that maybe connected to a 75mm DIAMETER house drain pipe under 4% SLOPE

• A.

18

• B.

21

• C.

25

• D.

34

B. 21
Explanation
The maximum number of fixture units that can be connected to a 75mm diameter house drain pipe under a 4% slope is 21. Fixture units refer to the load or demand that each plumbing fixture places on the drain system. The 4% slope indicates the gradient or incline of the pipe, which helps to ensure proper drainage. The given answer of 21 suggests that this is the maximum number of fixture units that can be accommodated by the 75mm diameter pipe under these conditions.

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• 26.

### What is the MAXIMUM number of fixture units that maybe connected to a 75mm DIAMETER house drain pipe under 2% SLOPE

• A.

18

• B.

21

• C.

25

• D.

34

A. 18
Explanation
The maximum number of fixture units that can be connected to a 75mm diameter house drain pipe with a 2% slope is 18. Fixture units refer to the amount of water flow that a plumbing fixture, such as a sink or toilet, requires. The diameter of the pipe and the slope determine the capacity of the pipe to handle the flow. In this case, a 75mm diameter pipe with a 2% slope can accommodate up to 18 fixture units.

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• 27.

### What is the MAXIMUM number of fixture units that maybe connected to a 125mm DIAMETER house drain pipe under 3% SLOPE

• A.

162

• B.

216

• C.

264

• D.

275

B. 216
Explanation
The maximum number of fixture units that can be connected to a 125mm diameter house drain pipe under a 3% slope is 216. This is determined by the size of the pipe and the slope, which affects the flow capacity. The larger the pipe diameter and steeper the slope, the more fixture units can be accommodated. In this case, 216 is the highest number provided, indicating that it is the maximum.

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• 28.

### What is the MAXIMUM number of fixture units that maybe connected to a 125mm DIAMETER house drain pipe under 4% SLOPE

• A.

162

• B.

216

• C.

264

• D.

275

C. 264
Explanation
The maximum number of fixture units that may be connected to a 125mm diameter house drain pipe under a 4% slope is 264. The number of fixture units that can be connected to a drain pipe depends on its diameter and slope. In this case, a 125mm diameter pipe with a 4% slope can accommodate up to 264 fixture units.

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• 29.

### What is the SLOPE of a 100mm DIAMETER house drain pipe with 114 fixture units?

• A.

2%

• B.

3%

• C.

4%

• D.

5%

C. 4%
Explanation
The slope of a pipe refers to the angle at which it is inclined to allow for proper drainage. In this case, the question asks for the slope of a 100mm diameter house drain pipe with 114 fixture units. The correct answer is 4%. This means that the pipe should be inclined at a 4% angle to ensure effective drainage of waste water and prevent clogs or backups.

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• 30.

### What is the SLOPE of a 100mm DIAMETER house drain pipe with 100 fixture units?

• A.

2%

• B.

3%

• C.

4%

• D.

5%

C. 4%
Explanation
The slope of a house drain pipe is typically expressed as a percentage, indicating the amount of vertical drop over a horizontal distance. In this case, the correct answer is 4%. This means that for every 100 units of horizontal distance, the pipe will have a vertical drop of 4 units. This slope is necessary to ensure proper drainage and prevent the accumulation of waste and debris in the pipe.

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• 31.

### What is the SLOPE of a 100mm DIAMETER house drain pipe with 85 fixture units?

• A.

2%

• B.

3%

• C.

4%

• D.

5%

B. 3%
Explanation
The slope of a pipe refers to the amount of vertical drop that occurs over a certain horizontal distance. In this case, the question asks for the slope of a 100mm diameter house drain pipe with 85 fixture units. The correct answer is 3%. This means that the pipe should have a 3% downward slope for every horizontal distance covered. A 3% slope is commonly used in plumbing to ensure proper flow and prevent clogs or backups in the drainage system.

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• 32.

### What is the SLOPE of a 125mm DIAMETER house drain pipe with 150 fixture units?

• A.

2%

• B.

3%

• C.

4%

• D.

5%

A. 2%
Explanation
The slope of a drain pipe is typically measured in terms of the percentage of slope. A 2% slope means that for every 100 units of horizontal distance, the pipe will have a 2 unit drop in elevation. In this case, the diameter of the drain pipe is given as 125mm and the fixture units are 150. However, the diameter of the pipe does not affect the slope calculation. Therefore, the correct answer is 2%.

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• 33.

### What is the SLOPE of a 125mm DIAMETER house drain pipe with 203 fixture units?

• A.

2%

• B.

3%

• C.

4%

• D.

5%

B. 3%
Explanation
The slope of a drain pipe is the angle at which it is inclined to allow for proper drainage. In this case, the question provides the diameter of the pipe (125mm) and the number of fixture units (203). To determine the slope, we need to calculate the required slope based on the fixture units. Without further information or calculations given, it is not possible to provide a specific explanation for why the correct answer is 3%.

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• 34.

### What is the MAXIMUM number of fixture units that maybe connected to a 100mm DIAMETER house drain pipe under 3% SLOPE

• A.

84

• B.

90

• C.

96

• D.

114

C. 96
Explanation
The maximum number of fixture units that can be connected to a 100mm diameter house drain pipe under a 3% slope is 96. This means that the pipe can handle the drainage from a maximum of 96 fixtures, such as toilets, sinks, and showers, without causing any issues with the flow of wastewater.

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• 35.

### What is the MAXIMUM number of fixture units that maybe connected to a 100mm DIAMETER house drain pipe under 2% SLOPE

• A.

81

• B.

84

• C.

90

• D.

96

B. 84
Explanation
The maximum number of fixture units that can be connected to a 100mm diameter house drain pipe under a 2% slope is 84. This means that the pipe can handle a total of 84 units from various fixtures such as toilets, sinks, showers, etc. The 2% slope ensures proper drainage and prevents any potential blockages or backups in the system.

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• 36.

### It is that portion of the horizontal drainage system which stars from the outer surface of the building and terminate at the main sewer in the street or septic tank.

• A.

Soil Drain

• B.

House Sewer

• C.

House Drain Line

• D.

Waste Sewer

B. House Sewer
Explanation
The correct answer is House Sewer because it refers to the portion of the horizontal drainage system that starts from the outer surface of the building and terminates at the main sewer in the street or septic tank. This is the pipe that carries wastewater and sewage from the house to the main sewer or septic tank for disposal.

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• 37.

### It is a device installed in a house drain immediately inside the foundation wall of the building.

• A.

Soil Trap

• B.

Main Trap

• C.

House Trap

• D.

Waste Trap

C. House Trap
Explanation
A house trap is a device that is installed in a house drain, typically located immediately inside the foundation wall of the building. Its purpose is to prevent sewer gases from entering the building by trapping a small amount of water in the trap, which acts as a barrier. This helps to maintain a sanitary and odor-free environment inside the house.

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• 38.

### Is a device used in a drainage system to prevent the reversal of flow

• A.

Suppression Valve

• B.

Return Valve

• C.

Backflow Valve

• D.

Pressure Valve

C. Backflow Valve
Explanation
A backflow valve is a device used in a drainage system to prevent the reversal of flow. It allows the flow of liquid or gas in one direction but prevents it from flowing back in the opposite direction. This is important in preventing contamination of clean water sources or sewage backup. The backflow valve ensures that the flow only goes in the desired direction, protecting the integrity of the drainage system.

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• 39.

### The most preferred type of backflow valve because it has the characteristics of non-interferences in the movement of air inside the drainage system.

• A.

Interference Valve

• B.

Unbalanced Valve

• C.

Non-interference Valve

• D.

Balance Valve

D. Balance Valve
Explanation
A balance valve is the most preferred type of backflow valve because it has the characteristics of non-interference in the movement of air inside the drainage system. This means that it allows for smooth and uninterrupted flow of air, preventing any blockages or disruptions in the system. This is important for maintaining the efficiency and functionality of the drainage system.

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• 40.

### Not a preferred type of backflow valve, because of its poor performance.

• A.

Interference Valve

• B.

Unbalanced Valve

• C.

Non-interference Valve

• D.

Balance Valve

B. Unbalanced Valve
Explanation
The unbalanced valve is not a preferred type of backflow valve because it has poor performance. This suggests that the valve is not able to effectively prevent backflow, which is the undesired reverse flow of fluids. Backflow can contaminate water supplies or damage equipment, so it is important to have a reliable backflow valve. The poor performance of the unbalanced valve implies that it may not be able to effectively prevent backflow, making it an undesirable choice for this purpose.

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• 41.

### It is not preferred to discharge into the septic tank.

• A.

Combined Drain

• B.

Storm Drain

• C.

Industrial Drain

• D.

Sanitary Drain

B. Storm Drain
Explanation
Discharging into the septic tank is not preferred because a septic tank is designed to handle wastewater from toilets, showers, and sinks in a residential or commercial building. Stormwater, on the other hand, refers to rainwater runoff from streets, parking lots, and other surfaces. Storm drains are specifically designed to collect and carry this stormwater away to prevent flooding. Therefore, storm drains are the preferred option for discharging stormwater, while septic tanks are not suitable for this purpose.

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• 42.

### It is adopted when the street drainage is higher in elevation than the basement floor of the building.

• A.

• B.

Outside Storm Drain

• C.

Splash Pan

• D.

Inside Storm Drain

A. Overhead Storm Drain
Explanation
An overhead storm drain is adopted when the street drainage is higher in elevation than the basement floor of the building. This means that the drain is installed above ground level, allowing water to flow downward from the street into the drain. This type of drain is necessary to prevent water from flooding the basement of the building.

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• 43.

### It collects water coming from the downspout leading the accumulated water away from the house at a relatively low rate of flow.

• A.

• B.

• C.

Splash Pan

• D.

Inside Storm Drain

C. Splash Pan
Explanation
A splash pan is a device that collects water from a downspout and directs it away from the house at a slow rate of flow. This helps prevent water from accumulating near the foundation of the house and causing damage. The other options, overhead storm drain, roof leader, and inside storm drain, do not accurately describe the function of collecting water from a downspout and directing it away from the house.

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• 44.

### It is sometimes located under the basement floor or within the walls of the buildings.

• A.

• B.

Outside Storm Drain

• C.

Splash Pan

• D.

Inside Storm Drain

D. Inside Storm Drain
Explanation
An inside storm drain is sometimes located under the basement floor or within the walls of buildings. This type of storm drain is designed to collect and redirect excess water from rain or storms, preventing flooding and water damage to the building's foundation. By being located inside the building, it allows for a more efficient and discreet drainage system.

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• 45.

### It is installed outside the foundation wall of the building.

• A.

• B.

Outside Storm Drain

• C.

Splash Pan

• D.

Inside Storm Drain

B. Outside Storm Drain
Explanation
An outside storm drain is installed outside the foundation wall of a building. This type of storm drain is designed to collect and divert rainwater and other runoff away from the building's foundation to prevent water damage and flooding. By being positioned outside the foundation wall, it ensures that any excess water is directed away from the building, reducing the risk of water infiltration and structural issues.

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• 46.

### Storm Drain is installed provided a slope of NOT MORE THAN ______ PER METER RUN.

• A.

0.5 %

• B.

1 %

• C.

1.5 %

• D.

2 %

D. 2 %
Explanation
Storm Drain is installed provided a slope of NOT MORE THAN 2% PER METER RUN. This means that the maximum slope allowed for the installation of a storm drain is 2% per meter of distance. A slope of 2% means that for every meter of horizontal distance, the vertical distance will increase by 2 centimeters. This slope is necessary to ensure proper drainage and prevent water from pooling or stagnating in the drain. A steeper slope would cause the water to flow too quickly, potentially causing erosion or other issues.

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• 47.

### Appropriate FITTINGS for a Storm Drain.

• A.

Wye, 1/8 bend, Long Radius

• B.

Tee, 1/8 bend, Long Radius

• C.

Wye, 1/4 bend, Long Radius

• D.

Wye, 1/8 bend, Short Radius

A. Wye, 1/8 bend, Long Radius
• 48.

### It is popularly known as water conductor or downspout.

• A.

• B.

• C.

Splash Pan

• D.

Inside Storm Drain

Explanation
A roof leader is a term commonly used to refer to a water conductor or downspout. It is responsible for collecting rainwater from the roof and directing it away from the building. The term "roof leader" is often used in the context of drainage systems and is widely recognized in the construction and plumbing industries.

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• 49.

### The House Drain should be sized correctly to have a flow of about ___ of the pipe diameter.

• A.

45%

• B.

50%

• C.

55%

• D.

60%

B. 50%
Explanation
The House Drain should be sized correctly to have a flow of about 50% of the pipe diameter. This means that the diameter of the drain should be approximately half of the diameter of the pipe it is connected to. This sizing ensures that the drain can effectively handle the flow of wastewater and prevent any blockages or backups. A larger drain diameter would result in inefficient flow, while a smaller diameter would increase the risk of clogs. Therefore, a 50% flow rate is optimal for the House Drain.

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• 50.

### It is also known as the COLLECTION LINE of a Plumbing System

• A.

House Drain

• B.

Soil Drain

• C.

Waste Drain

• D.

Main Drain