Plumbing Code For Philippines Quiz

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  • 1/89 Questions

    Water closet bowls for________ use shall be elongated bowl types equipped with open-front seats.

    • Public
    • Private
    • Government
    • None of the above
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About This Quiz

The Plumbing Code For Philippines Quiz is designed for anyone interested in understanding the regulations governing plumbing systems in the Philippines. This quiz covers a wide range of topics, including sanitary and drainage requirements, pipe sizing, materials allowed for specific installations, and safety standards. It also delves into permit requirements, inspection processes, and the responsibilities of plumbers and builders under Philippine law.

With questions ranging from fundamental rules to more advanced code specifics, this quiz is ideal for those preparing for certification exams, enhancing their professional knowledge, or ensuring compliance in their construction projects. Test your understanding of the Plumbing Code of the Philippines now and gain the confidence you need to work in line with national standards and regulations.

Plumbing Code For Philippines Quiz - Quiz

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  • 2. 

    All piping of plumbing systems shall be of durable ____________-APPROVED materials, free from defective workmanship, designed and constructed by Registered Master Plumbersto ensure satisfactory service.

    • NAMPAP

    • DILG

    • DPWH

    • DENR

    Correct Answer
    A. NAMPAP
    Explanation
    The correct answer is NAMPAP. NAMPAP stands for National Association of Master Plumbers and is an organization that sets standards and guidelines for plumbing systems. The use of NAMPAP-approved materials ensures that the piping is of high quality and will provide satisfactory service.

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  • 3. 

    All pipe determinations shall be based on eighty percent (___) the reduced pressure.  

    • 70%

    • 60%

    • 80%

    • 90%

    Correct Answer
    A. 80%
    Explanation
    When determining the pipe size, it is important to consider the reduced pressure. In this case, the correct answer is 80%, meaning that the pipe size should be based on 80% of the reduced pressure. This allows for a margin of safety and ensures that the pipe can handle the pressure without any issues.

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  • 4. 

    What consists of a body, a checking member & an atmospheric opening?

    • ATMOSPHERIC VACUUM BREAKER (AVB

    • DOUBLE CHECK VALVE BACKFLOW PREVENTION ASSEMBLY (DC)

    • PRESSURE VACUUM BREAKER BACFLOW PREVENTION ASSEMBLY (PVB)

    • None of the above

    Correct Answer
    A. ATMOSPHERIC VACUUM BREAKER (AVB
    Explanation
    The correct answer is the Atmospheric Vacuum Breaker (AVB). This is because an AVB consists of three main components: a body, a checking member, and an atmospheric opening. The body houses the checking member, which is responsible for preventing backflow. The atmospheric opening allows air to enter the system, creating a break in the vacuum and preventing contamination of the water supply. The other options, such as the Double Check Valve Backflow Prevention Assembly (DC) and the Pressure Vacuum Breaker Backflow Prevention Assembly (PVB), do not have the same components as an AVB.

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  • 5. 

    The drawings, specifications, calculations, etc., for the plumbing/sanitary permit will be signed by a registered and licensed __________.

    • Drainage Engineer

    • Master Plumber

    • Sanitary Engineer

    • Architect

    Correct Answer
    A. Master Plumber
    Explanation
    The correct answer is Master Plumber. In order to obtain a plumbing/sanitary permit, the drawings, specifications, calculations, and other related documents need to be signed by a registered and licensed master plumber. This is because a master plumber has the expertise and knowledge in plumbing and sanitary systems to ensure that the design and installation meet the required standards and regulations.

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  • 6. 

    Drainage pipes shall be run in practical alignments & at a uniform slope between manholes of not less than ______________ toward the point of disposal.

    • 20mm/m or 2%

    • 30mm/m or 3%

    • 40mm/m or 4 %

    • 10mm/m or 1 %

    Correct Answer
    A. 20mm/m or 2%
    Explanation
    Drainage pipes are designed to ensure the efficient flow of wastewater towards the point of disposal. To achieve this, the pipes should be laid in practical alignments and at a uniform slope. The slope helps to create a gravitational force that allows the wastewater to flow freely. In this case, the correct answer is 20mm/m or 2%, which means that for every meter of pipe, there should be a downward slope of 20mm or 2%. This slope is sufficient to ensure the proper drainage of wastewater and prevent any blockages or stagnant water.

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  • 7. 

    Where did the birth of the plumbing profession in the Philippines take place?

    • Intramuros

    • Barasoain

    • Bataan

    • Cebu

    Correct Answer
    A. Intramuros
    Explanation
    Intramuros is the correct answer because it is the historical walled city within Manila, Philippines where the birth of the plumbing profession in the country can be traced back to. Intramuros was the center of trade and commerce during the Spanish colonial period, and it was in this area where the first plumbing systems were established to provide water supply and sanitation for the residents. The development of plumbing profession in the Philippines can be attributed to the establishment of these early plumbing systems in Intramuros.

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  • 8. 

    “Size of water piping shall be based on the total _________."

    • Water consumption

    • Water demand

    • Water potability

    • None of the above

    Correct Answer
    A. Water demand
    Explanation
    The size of water piping is determined by the total water demand, which refers to the amount of water needed for various purposes such as drinking, bathing, cooking, and irrigation. The water demand is calculated based on factors like the number of occupants, the type of building, and the expected usage patterns. It is important to consider the water demand when sizing the piping system to ensure an adequate supply of water for all the intended uses.

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  • 9. 

    Fixtures having concealed slip joint connections shall be provided with an access panel or utility at least ______m in its least dimension for inspection & repair.

    • 0.30

    • 0.20

    • 0.10

    • 0.40

    Correct Answer
    A. 0.30
    Explanation
    According to standard plumbing codes, fixtures with concealed slip joint connections must have an access panel or utility opening with a minimum dimension of 0.30 meters (or 300 millimeters). This requirement ensures that there is adequate space for inspection, maintenance, and repair of the concealed plumbing connections. The access panel allows plumbers and inspectors to access these areas without having to demolish walls or other structures, facilitating easier and more efficient repair work.

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  • 10. 

    The sanitary and plumbing permit will be revoked if the project has been abandoned or suspended for how many days?

    • 120

    • 60

    • 30

    • 100

    Correct Answer
    A. 120
    Explanation
    The sanitary and plumbing permit will be revoked if the project has been abandoned or suspended for 120 days. This means that if there is no progress or work being done on the project for a period of 120 days, the permit will no longer be valid. This is likely to ensure that projects are completed in a timely manner and to prevent abandoned or unfinished projects from causing any potential health or safety hazards.

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  • 11. 

    Water pipes & fittings with a lead content that exceed ____ shall be prohibited & shall not be used in potable piping systems.

    • 8%

    • 9%

    • 10%

    • 11%

    Correct Answer
    A. 8%
    Explanation
    Water pipes and fittings with a lead content exceeding 8% are prohibited and should not be used in potable piping systems. This is because lead is a toxic substance that can leach into the water and pose serious health risks when consumed. Therefore, it is crucial to ensure that water pipes and fittings have a lead content below the specified threshold to maintain the safety and quality of the water supply.

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  • 12. 

     Wastewater drain for _________ cupsink at church altar & baptisteries font outlet shall discharge direct to the ground & not connected to any sanitary or drainage system. 

    • Holy sink

    • Lavatory

    • Baptismal shrine

    • Sacrarium

    Correct Answer
    A. Sacrarium
    Explanation
    The correct answer is "Sacrarium". A sacrarium is a special sink or drain used in churches for the disposal of holy water or other sacred substances. It is designed to prevent the mixing of these substances with regular wastewater or drainage systems, as they are considered to be sacred and require proper disposal. By discharging directly to the ground, the sacrarium ensures that the holy water is treated with respect and reverence.

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  • 13. 

    Suspended cast iron soil pipe shall be supported at not more than ____m intervals, except that pipe exceeding 1.5m length may be supported at not more than _____m intervals. Supports shall be adequate to maintain alignment & to prevent sagging & shall be placed within 0.45m of the hub or joint.   

    • 1.5/ 3

    • 1.5/ 4

    • 3/ 1.5

    • 4/ 1.5

    Correct Answer
    A. 1.5/ 3
    Explanation
    Suspended cast iron soil pipe should be supported at intervals of not more than 1.5m, except for pipes exceeding 1.5m in length, which can be supported at intervals of not more than 3m. The supports need to be strong enough to maintain alignment and prevent sagging, and they should be placed within 0.45m of the hub or joint.

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  • 14. 

    Further, a _________ and bathtub or shower shall be installed to meet the basic requirements of sanitation and personal hygiene.

    • Sink

    • Lavatory

    • Basin

    • None of the above

    Correct Answer
    A. Lavatory
    Explanation
    A lavatory is a type of sink that is specifically designed for personal hygiene purposes, such as washing hands and face. It typically includes a faucet for water supply and a drain for water disposal. In this context, the requirement is to install a lavatory along with a bathtub or shower to ensure proper sanitation and personal hygiene. Therefore, the correct answer is "LAVATORY".

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  • 15. 

    For vertical piping, cast iron pipes- Bell & Spigot & Hubless pipe shall be supported at_____ or closer.

    • Every 2 storey

    • Every storey

    • Every 3 storey

    • Every 4 storey

    Correct Answer
    A. Every storey
    Explanation
    Cast iron pipes, specifically bell and spigot and hubless pipes, need to be supported at every storey in vertical piping. This is because the weight and pressure of the pipes can cause them to sag or become unstable if not adequately supported. By supporting them at every storey, the pipes can maintain their structural integrity and prevent any potential issues or damage.

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  • 16. 

    For the set of sanitary/plumbing plans required by the building official when applying for a permit, how many sets of drawings will be kept at the job site?

    • 2

    • 3

    • 1

    • 4

    Correct Answer
    A. 1
    Explanation
    One set of sanitary/plumbing plans is required to be kept at the job site throughout the construction period. This set serves as a reference for contractors, inspectors, and other personnel to ensure that the work aligns with the approved plans and meets code requirements.

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  • 17. 

    The expiration of the permit for sanitary/plumbing will be after how many years from the date of issuance?

    • 2

    • 1

    • 1.5

    • 3

    Correct Answer
    A. 1
    Explanation
    A sanitary/plumbing permit will expire 1 year after the date of issuance if the work has not commenced or if the project is abandoned. This ensures that the permit reflects current building codes and regulations and that the construction is completed in a timely manner.

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  • 18. 

    If water closets or other plumbing fixtures are installed in the buildings where there is no sewer within a reasonable distance, suitable provision shall be made for disposing of the building sewage by some accepted method of sewage treatment and disposal, such as ______________

    • Waste tank

    • Septic tank

    • Sewage Disposal System

    • None of the above

    Correct Answer
    A. Septic tank
    Explanation
    If there is no sewer within a reasonable distance, suitable provision needs to be made for disposing of the building sewage. The accepted method for this is a septic tank. A septic tank is an underground chamber made of concrete, fiberglass, or plastic, which collects and treats sewage. It separates solid waste from the liquid, allowing the liquid to flow out into a drain field for further treatment and disposal. A septic tank is a common and effective method for sewage treatment and disposal in areas where there is no access to a sewer system.

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  • 19. 

    Each family dwelling unit on premises abutting on a sewer or with a private sewer-disposal system shall have at least ___ water closet and ___ kitchen-type sink

    • 1,2

    • 1,1

    • 2,1

    • 2,3

    Correct Answer
    A. 1,1
    Explanation
    Each family dwelling unit on premises abutting on a sewer or with a private sewer-disposal system is required to have at least one water closet and one kitchen-type sink. This means that every unit must have a toilet and a sink in the kitchen.

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  • 20. 

    A length of soil or waste stack corresponds in general to a story height but in no case less than 2.43m within which the horizontal branches from one floor or story of a building are connected to the stack.

    • Branch Interval

    • Interval

    • Branch

    • Length

    Correct Answer
    A. Branch Interval
    Explanation
    A branch interval refers to a length of soil or waste stack that corresponds generally to a storey height, typically where the horizontal branches from one floor or storey of a building are connected to the stack. The branch interval is crucial in plumbing design to ensure that waste and soil drainage from different floors are properly channeled into the vertical stack without causing backflow or other drainage issues. According to plumbing codes, this interval must not be less than 2.43 meters, ensuring adequate spacing for effective waste management and flow within the building's plumbing system.

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  • 21. 

    No water closet or bidet shall be set closer than ______m from its center to any side of the wall or obstruction or closer than ______m center to center to any similar fixture. 

    • .375 / 0.75

    • .375 / 0. 70

    • .40 / 0.70

    • .50 / 0.60

    Correct Answer
    A. .375 / 0.75
    Explanation
    The correct answer is .375 / 0.75. This means that a water closet or bidet should not be set closer than 0.375 meters from its center to any side of the wall or obstruction, and it should not be set closer than 0.75 meters center to center to any similar fixture. This ensures proper spacing and allows for comfortable use of the fixtures without any obstructions.

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  • 22. 

    a physical separation, which may be a low inlet into the indirect waste receptor from the fixture, appliance or device indirectly connected

    • AIR SEPARATION

    • AIR BREAK

    • AIR DEVISOR

    • NONE OF THE ABOVE

    Correct Answer
    A. AIR BREAK
    Explanation
    An air break is a physical separation that prevents backflow of water or contaminants from a fixture, appliance, or device into the indirect waste receptor. It is typically achieved by having a low inlet into the waste receptor, creating a gap or break in the plumbing system. This helps to ensure that any potential contaminants or wastewater cannot flow back into the water supply system, maintaining the safety and integrity of the plumbing system.

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  • 23. 

    The minimum air gap for Over rim bath fillers & other fixtures with effective openings not greater than 25mm in diameter. affected by walls

    • 76mm

    • 77mm

    • 78mm

    • 79mm

    Correct Answer
    A. 76mm
    Explanation
    The minimum air gap for over rim bath fillers and other fixtures with effective openings not greater than 25mm in diameter is 76mm. This means that there should be a minimum distance of 76mm between the fixture and any surrounding walls. This is important to ensure proper air circulation and prevent any potential contamination or backflow of water.

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  • 24. 

    Lead Pipe- shall be supported at by____________for entire length with hangers properly spaced.

    • Stiff aluminum or wooden backing

    • Stiff metal or wooden backing

    • Stiff plastic or metal sheet

    Correct Answer
    A. Stiff metal or wooden backing
    Explanation
    The correct answer is stiff metal or wooden backing. A lead pipe needs to be properly supported throughout its entire length to prevent sagging or damage. Using a stiff metal or wooden backing provides the necessary support and stability for the pipe. This ensures that the pipe remains in place and does not suffer from any structural issues.

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  • 25. 

    The minimum air gap for Lavatories & other fixtures with effective openings not greater than 13mm in diameter if not affected by wall

    • 25

    • 24

    • 23

    • 22

    Correct Answer
    A. 25
    Explanation
    The minimum air gap for lavatories and other fixtures with effective openings not greater than 13mm in diameter is 25. This means that there should be a minimum distance of 25mm between the fixture and any adjacent wall or obstruction. This is important to ensure proper ventilation and prevent any potential contamination or buildup of moisture or mold.

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  • 26. 

    Excessive water pressure – water pressure greater than ____ Kpa

    • 551

    • 552

    • 553

    • 554

    Correct Answer
    A. 551
    Explanation
    Excessive water pressure is defined as water pressure greater than 552 kPa (kilopascals). High water pressure can lead to various problems in plumbing systems, such as leaks, pipe damage, and water wastage. Therefore, plumbing codes often specify maximum allowable water pressure to prevent potential damage to the plumbing fixtures and systems. Keeping water pressure below 552 kPa helps ensure that plumbing systems operate efficiently and safely.

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  • 27. 

    Horizontal drainage lines connecting to other horizontal drainage lines shall enter through the following given below except:

    • 45 wye branches

    • Combination wye & 1/8 bend branches

    • Or other approved fittings of longer sweeps.

    • 30 wye bend

    Correct Answer
    A. 30 wye bend
    Explanation
    The correct answer is 30 wye bend. This is because the question is asking for the exception, and all the other options listed (45 wye branches, combination wye & 1/8 bend branches, or other approved fittings of longer sweeps) are acceptable ways for horizontal drainage lines to connect to each other. A 30 wye bend is not listed as an approved fitting for this purpose.

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  • 28. 

    No building sewer or other drainage pipings or part thereof, constructed of materials other than that approved for use under or within the building, shall be installed under or within _____ m of any building or structure, nor less than 0.3m below the finish ground surface

    • 0.60

    • 0.40

    • 0.30

    • 0.20

    Correct Answer
    A. 0.60
    Explanation
    According to the given statement, any building sewer or drainage piping that is not made of approved materials cannot be installed within 0.60m of any building or structure. This means that there must be a minimum distance of 0.60m between the building or structure and the sewer or drainage piping.

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  • 29. 

    No _____________ shall be located in a room or compartment, which is not properly lighted & ventilated.

    • CATCH BASIN

    • LAVATORY

    • BIBB

    • WATER CLOSET

    Correct Answer
    A. WATER CLOSET
    Explanation
    A water closet should not be located in a room or compartment that is not properly lighted and ventilated. This is important for hygiene and comfort reasons. Adequate lighting ensures that users can see clearly and maintain cleanliness in the space. Proper ventilation helps to remove odors and maintain air quality in the room. Therefore, it is necessary to have proper lighting and ventilation in the area where a water closet is located.

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  • 30. 

    Copper Tubing - shall be supported at approximately ________m intervals for piping 38mm diameter & smaller & _______m intervals for piping 51mm & larger in dia.

    • 1.8/ 3.0

    • 1.9/ 3.5

    • 1.5 / 2.5

    • None of the above

    Correct Answer
    A. 1.8/ 3.0
    Explanation
    Copper tubing with a diameter of 38mm and smaller should be supported at approximately 1.8 meters intervals. For piping with a diameter of 51mm and larger, the support should be at approximately 3.0 meters intervals. Proper support helps to maintain the integrity of the piping system, preventing sagging and reducing stress on joints and connections.

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  • 31. 

    Inadequate water pressure – water pressure less than _____ Kpa

    • 103

    • 104

    • 105

    • 106

    Correct Answer
    A. 103
    Explanation
    Inadequate water pressure refers to a situation where the water pressure is below a certain level, causing issues with water flow and supply. In this case, the correct answer is 103 Kpa, as it is the lowest value among the given options. This suggests that any water pressure below 103 Kpa would be considered inadequate.

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  • 32. 

    For EXCRETA DRAINAGE SYSTEM   No Vitrified Clay Pipes or Fittings for building drain or sewer shall be used above ground or whenever piping is pressurized by a pump or ejector. They shall be kept ______m below finish ground level.

    • 0,30

    • 0.40

    • 0.50

    • 0.60

    Correct Answer
    A. 0,30
    Explanation
    The correct answer is 0,30. This means that the Vitrified Clay Pipes or Fittings for the building drain or sewer should be kept 0.30m below the finish ground level. This is important because using these pipes or fittings above ground or when pressurized by a pump or ejector can cause damage or failure. Keeping them below the ground level ensures proper functionality and prevents any potential issues.

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  • 33. 

    Which of the following is NOT a primary objective of the National Plumbing Code of the Philippines?

    • To ensure the safe and sanitary installation of plumbing systems. 

    • To protect public health and safety. 

    • To promote water conservation and efficiency. 

    • To regulate the pricing of plumbing services.

    Correct Answer
    A. To regulate the pricing of plumbing services.
    Explanation
    The National Plumbing Code of the Philippines focuses on technical standards and safety guidelines for plumbing installations, not on regulating the pricing of services. Its primary objectives are to ensure safe and sanitary plumbing systems, protect public health, and promote water conservation.

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  • 34. 

    The minimum height required from the finish grade line for the Siamese inlet connection of a standpipe is __________.

    • 2.0 M

    • 1.2 M

    • 1.5 M

    • 2.5 M

    Correct Answer
    A. 1.2 M
    Explanation
    The minimum height required from the finish grade line to the siamese inlet connection of a standpipe is 1.2 meters. This means that the connection point of the standpipe should be at least 1.2 meters above the ground level. This height requirement ensures that the standpipe is easily accessible and can be connected to by firefighters or emergency personnel during firefighting operations.

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  • 35. 

    For vertical piping,  Screwed Pipe   - Iron Pipe Size (IPS) shall be supported at not less than every other storey

    • Drift

    • Height

    • Level

    • Dimension

    Correct Answer
    A. Height
    Explanation
    The correct answer is "height". In vertical piping, Screwed Pipe - Iron Pipe Size (IPS) should be supported at not less than every other storey height. This means that the piping should be supported at regular intervals along its vertical length to prevent sagging or excessive movement. This ensures the stability and integrity of the piping system.

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  • 36. 

    ______________ must be supported at least every other joint except that when the developed length between supports exceeds 1.2m, they shall be provided at each joint. 

    • Couplings and compression joints

    • Hubless or compression gasket joints

    • Caps and plugs

    • None of the above

    Correct Answer
    A. Hubless or compression gasket joints
    Explanation
    Hubless or compression gasket joints must be supported at least every other joint, except when the developed length between supports exceeds 1.2m, in which case they must be provided at each joint. This means that for shorter lengths, the joints can be supported every other joint, but for longer lengths, supports must be provided at each joint to ensure proper stability and prevent any potential issues or failures.

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  • 37. 

    Horizontal drainage lines connecting to a vertical stack shall enter through the following except,

    • 45 wye branches

    • Combination wye & 1/8 bend branches

    • 30 wye bend

    • Or other approved fittings of longer sweeps.

    Correct Answer
    A. 30 wye bend
    Explanation
    Horizontal drainage lines connecting to a vertical stack should enter through a 45 wye branch, a combination of wye and 1/8 bend branches, or other approved fittings of longer sweeps. The option of a 30 wye bend is not correct because it does not meet the requirements for the connection.

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  • 38. 

    Restaurant kitchen & other special-use sink may be made of approved-typed sheet steel not less than Ga.16 U.S. B&S or 1.6mm thk. 

    • Bonderized & galvanized

    • Aluminum

    • Steel

    • None of the above

    Correct Answer
    A. Bonderized & galvanized
    Explanation
    The correct answer is bonderized & galvanized. This is because restaurant kitchens and other special-use sinks need to be made of approved-typed sheet steel that is not less than Ga.16 U.S. B&S or 1.6mm thick. Bonderized and galvanized are both types of coatings that can be applied to steel to protect it from corrosion and increase its durability, making them suitable choices for these types of sinks. Aluminum and plain steel are not mentioned as approved options in the given information.

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  • 39. 

    fixture directly connected to the drainage system shall be equipped with a ________.  

    • Ventilating System

    • Water-sealed trap

    • Soil Pipes

    • Waste Pipes

    Correct Answer
    A. Water-sealed trap
    Explanation
    A fixture directly connected to the drainage system needs to be equipped with a water-sealed trap. This is because the trap creates a barrier of water that prevents sewer gases and odors from entering the building through the fixture. The water-sealed trap acts as a seal and allows wastewater to flow through while blocking the passage of gases. This helps to maintain a healthy and odor-free environment within the building.

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  • 40. 

    Water Closet & Urinal Tanks shall be equipped with a listed ________ & shall be installed with the critical level at least 25mm above the full opening of the overflow pipe.  

    • Corporation cock

    • Gatevalve

    • Ballcock

    • None of the above

    Correct Answer
    A. Ballcock
    Explanation
    Water closets and urinal tanks need to be equipped with a listed ballcock. This is necessary to control the flow of water into the tank and maintain the water level at the desired level. The critical level of the ballcock should be installed at least 25mm above the full opening of the overflow pipe to prevent any potential overflow or flooding. A corporation cock or gate valve would not serve the same purpose as a ballcock in this scenario.

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  • 41. 

    The minimum air gap for Over rim bath fillers & other fixtures with effective openings not greater than 25mm in diameter. not affected by walls

    • 54mm

    • 53mm

    • 52mm

    • 51mm

    Correct Answer
    A. 51mm
    Explanation
    The minimum air gap for over rim bath fillers and other fixtures with effective openings not greater than 25mm in diameter is 51mm. This means that there should be a minimum distance of 51mm between the fixture and any adjacent walls or surfaces. This ensures that there is sufficient space for proper air circulation and prevents any potential interference or blockage of the fixture's openings.

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  • 42. 

    What is the fixture unit value for a bar sink, drinking fountain, or lavatory for public use?

    • 1

    • 2

    • 1.5

    • 2.5

    Correct Answer
    A. 2
    Explanation
    The fixture unit value for a bar sink, drinking fountain, or lavatory for public use is 2. In a public setting, these fixtures are used more frequently than in a private setting, resulting in higher water demand and drainage requirements. A fixture unit value of 2 accounts for this increased usage, ensuring that the plumbing system is properly sized to accommodate the water flow and drainage needs. This value is important for designing public facilities where multiple users may use these fixtures throughout the day, preventing issues like inadequate water supply or drainage overload.

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  • 43. 

    a minimum standard quantity of plumbing fixtures that discharge wastes into a plumbing installation

    • Plumbing unit

    • Plumbing fixtures

    • Plumbing system

    • Plumbing minimum

    Correct Answer
    A. Plumbing unit
    Explanation
    A plumbing unit refers to a minimum standard quantity of plumbing fixtures that discharge wastes into a plumbing installation. In other words, it is a group of plumbing fixtures that are connected and work together to remove waste from a building. This can include fixtures such as toilets, sinks, showers, and drains. The plumbing unit ensures that there is an adequate number of fixtures to meet the needs of the building and properly dispose of waste.

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  • 44. 

    In Ground        - piping buried on the ground shall be laid on the ______ for its entire length, except where concrete cradle support is provided which is adequate & approved by the Administrative Authority.

    • Firm bed

    • Strata

    • Compacted earth

    • None of the above

    Correct Answer
    A. Firm bed
    Explanation
    The correct answer is "firm bed." When piping is buried on the ground, it should be laid on a firm bed for its entire length, unless there is a concrete cradle support that has been approved by the Administrative Authority. This ensures that the piping is properly supported and protected from shifting or settling. The firm bed provides a stable foundation for the piping, reducing the risk of damage or failure.

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  • 45. 

    What is the fixture unit value for a urinal (pedestal or similar type)?

    • 10

    • 15

    • 12

    • 9

    Correct Answer
    A. 12
    Explanation
    The fixture unit value for a urinal (pedestal or similar type) is 12. Pedestal or similar types of urinals generally have a higher water demand compared to stall or wall-mounted urinals due to their design and the amount of water used per flush. A fixture unit value of 12 reflects this increased water usage, which is crucial for calculating the plumbing system's capacity to handle water flow and waste discharge efficiently. Proper assignment of fixture units ensures the plumbing system is sized correctly to accommodate the fixtures without overloading it.

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  • 46. 

    What consists of two independently acting internally or externally loaded check valves, four properly located test cocks with connectors & two isolation gate valves?

    • ATMOSPHERIC VACUUM BREAKER (AVB

    • DOUBLE CHECK VALVE BACKFLOW PREVENTION ASSEMBLY (DC)

    • PRESSURE VACUUM BREAKER BACFLOW PREVENTION ASSEMBLY (PVB)

    • None of the above

    Correct Answer
    A. DOUBLE CHECK VALVE BACKFLOW PREVENTION ASSEMBLY (DC)
    Explanation
    The given description mentions that the assembly consists of two independently acting check valves, test cocks with connectors, and isolation gate valves. This aligns with the characteristics of a Double Check Valve Backflow Prevention Assembly (DC). A DC assembly is designed to prevent backflow by utilizing two check valves that operate independently. The test cocks and isolation gate valves are also common components of a DC assembly. Therefore, the correct answer is the Double Check Valve Backflow Prevention Assembly (DC).

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  • 47. 

    The total number of sets of sanitary/plumbing plans required by the building official when applying for a permit.

    • 4

    • 5

    • 3

    • 6

    Correct Answer
    A. 6
    Explanation
    When applying for a building permit, the building official requires 6 sets of sanitary/plumbing plans. These sets are needed for various purposes, including review, approval, and record-keeping by different departments and authorities involved in the permitting process.

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  • 48. 

     Drains shall have a waterway equivalent area of the “tailpiece” – meaning, the sum of all the areas of the perforation of the strainer is equivalent to the outlet area.  

    • Strainers serving bathub

    • Strainers serving shower

    • Strainers serving lavatory

    • None of the above

    Correct Answer
    A. Strainers serving shower
    Explanation
    The correct answer is "Strainers serving shower" because the statement mentions that drains should have a waterway equivalent area that is equivalent to the outlet area. This implies that the strainers serving showers should have a specific waterway equivalent area, which is not mentioned for the other options (bathtub and lavatory). Therefore, the answer is specifically for strainers serving showers.

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  • 49. 

    The minimum air gap for  Sinks, laundry trays, goosenecks bath faucets & other fixtures with effective openings not greater than 19mm in diameter. if not affected by wall

    • 40mm

    • 39mm

    • 38mm

    • 37mm

    Correct Answer
    A. 38mm
    Explanation
    The minimum air gap required for sinks, laundry trays, goosenecks bath faucets, and other fixtures with effective openings not greater than 19mm in diameter is 38mm. This means that there should be a minimum distance of 38mm between the fixture and any adjacent wall or surface. This air gap is necessary to prevent any backflow or contamination of the water supply.

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Quiz Review Timeline (Updated): Jan 21, 2025 +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Jan 21, 2025
    Quiz Edited by
    ProProfs Editorial Team
  • Aug 15, 2010
    Quiz Created by
    C2x_op26
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