Plumbing Fixtures Quiz

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Questions and Answers

What is the primary function of a flush valve?

  • To hold a supply of water for later use
  • To maintain pressure in the plumbing system
  • To supply a fixed quantity of water for flushing (correct)
  • To purify the water before flushing

Which type of water closet is recommended for limited space?

  • Free Standing
  • Wall Hung
  • Round Front (correct)
  • Elongated Front

What minimum diameter is required for the trap in a private water closet installation?

  • 51mm
  • 100mm
  • 50mm
  • 76mm (correct)

What is the minimum size of a vent for a water closet?

<p>51mm (A)</p> Signup and view all the answers

Which material is NOT typically used for lavatories?

<p>Wood (B)</p> Signup and view all the answers

What is the WSFU value for a flush valve in a public water closet?

<p>6 (D)</p> Signup and view all the answers

Which type of lavatory is characterized by being mounted to the wall?

<p>Wall Hung Lavatory (B)</p> Signup and view all the answers

What is the purpose of a flush tank in plumbing fixtures?

<p>To hold a supply of water for flushing (B)</p> Signup and view all the answers

What is the minimum trap diameter for a kitchen sink?

<p>38 mm (D)</p> Signup and view all the answers

Which type of sink has a DFU value of 1 in a private setup?

<p>Bar Sink (Private) (C)</p> Signup and view all the answers

What is the minimum size of waste pipe for a commercial sink?

<p>58 mm (A)</p> Signup and view all the answers

What is the minimum size of vent required for a drinking fountain?

<p>32 mm (A)</p> Signup and view all the answers

What is the DFU value for a residential kitchen sink?

<p>2 (C)</p> Signup and view all the answers

Which plumbing fixture requires a minimum trap diameter of 51 mm?

<p>Shower Bath (A)</p> Signup and view all the answers

What size is the water supply pipe for a slop sink?

<p>38 mm (D)</p> Signup and view all the answers

What is the WSFU value for a public bar sink?

<p>2 (B)</p> Signup and view all the answers

What is required for each fixture connected to the drainage system?

<p>A water-sealed trap (D)</p> Signup and view all the answers

Which of the following substances is prohibited from entering the drainage system?

<p>Explosive mixtures (D)</p> Signup and view all the answers

What must be provided to ensure adequate air circulation in the drainage piping system?

<p>A properly designed vent terminal (C)</p> Signup and view all the answers

What is a requirement for the installation of water closets?

<p>The room must be properly lighted and ventilated (C)</p> Signup and view all the answers

Who is responsible for maintaining plumbing systems in serviceable condition?

<p>Registered Master Plumbers (A)</p> Signup and view all the answers

What should be done if there is no sewer system in an area for sewage disposal?

<p>Install a septic tank or an accepted method of sewage treatment (C)</p> Signup and view all the answers

What is the purpose of providing adequate cleanouts in the drainage system?

<p>To help in the cleaning of clogged pipes (C)</p> Signup and view all the answers

Which of the following actions is necessary to prevent contamination from backflow in plumbing systems?

<p>Provide proper protection against backflow of sewage (D)</p> Signup and view all the answers

Flashcards

Flush Tank Capacity

A flush tank holds 5-6 gallons of water for flushing toilets.

Flush Valve

A valve that provides a set amount of water for flushing, activated by pressure (no tank needed).

Round Front Water Closet

A toilet designed for smaller spaces.

Elongated Front Water Closet

A more comfortable toilet that takes up more space.

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Water Closet Roughing-in

Measurements needed for installing a toilet's pipes and connections.

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Lavatory

A basin for washing hands and face.

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Wall-Hung Lavatory

A lavatory mounted on a wall.

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Vitreous China

A durable, non-porous material used for making lavatories.

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Drainage System Design

Drainage systems must be designed to prevent blockages, using durable materials and proper cleanout access

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Durable Materials

Plumbing pipes must be made of materials approved by NAMPAP and built with quality workmanship.

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Water-Sealed Traps

Every fixture connected to the drainage system needs a water-sealed trap.

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Air Circulation

Drainage pipes need enough air circulation to prevent siphonage or trap seal issues

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Vent Terminals

Vents for drainage pipes must reach outside and prevent blockages.

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Leak Testing

Plumbing systems need testing to find and fix leaks during installation.

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Harmful Substances

Avoid substances that can damage pipes or cause issues with sewage disposal.

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Backflow Prevention

Prevent sewage from backing up into clean water sources like food and water supplies.

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Minimum Vent Size

The smallest allowed diameter for a vent pipe, ensuring proper air circulation in the drainage system.

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DFU Value

A measure of the drainage flow unit, indicating the amount of water a fixture typically discharges.

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Kitchen Sink Trap

The curved pipe beneath the sink that prevents sewer gases from entering your home.

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Kitchen Sink Waste Pipe Diameter

The minimum size of the pipe that carries waste water from the sink to the main drainage system.

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WSFU Value

The water supply flow unit, indicating the amount of water a fixture typically uses.

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Drinking Fountain Vent Size

The minimum size of the vent pipe for a drinking fountain.

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Shower Bath Vent Size

The minimum size of the vent pipe for a shower bath.

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Floor Drain Trap Diameter

The minimum size of the trap for a floor drain, preventing sewer gases.

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