Uniform Plumbing Code Chapter 6 Flashcards
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Questions and Answers

The code requirement for an adequate supply of potable running water is for?

Cleansing and sanitation

The primary reason for installing a backflow prevention assembly is?

Prevent pollution or contamination of the potable water supply

Ball cocks in water closet tanks shall be installed so that the critical level of the water inlet is above the full opening of the overflow pipe at least?

1 inch

A vacuum breaker installed above the highest part of a urinal equipped with a flushometer valve shall be located at least?

<p>6 inches above</p> Signup and view all the answers

A vacuum breaker installed above the overflow rim of a vat shall be located at least?

<p>6 inches above</p> Signup and view all the answers

A vacuum breaker installed above all downstream piping for a lawn sprinkler system shall be located at least?

<p>6 inches above</p> Signup and view all the answers

Pex tubing shall not be installed within the first ______ inches of piping connected to a water heater.

<p>18 inches</p> Signup and view all the answers

Backflow prevention devices installed in the water supply line to steam boilers shall be installed _____ inches above the ______.

<p>12 inches, above the floor</p> Signup and view all the answers

Each outlet on a nonpotable waterline that may be used for drinking purposes shall be posted?

<p>CAUTION: NONPOTABLE WATER, DO NOT DRINK</p> Signup and view all the answers

The piping material not approved in the cold water piping located inside a building is?

<p>PVC, asbestos cement, and PE</p> Signup and view all the answers

All malleable iron water fittings shall be?

<p>Galvanized</p> Signup and view all the answers

Water valves 2 1/2 inches and larger may have bodies that are?

<p>Cast iron or brass</p> Signup and view all the answers

Changes in direction of copper tubing may be made with?

<p>Bending equipment</p> Signup and view all the answers

Water piping systems shall be designed on the basis of the ____ pressure.

<p>Minimum</p> Signup and view all the answers

Copper water tube M may be installed within a building?

<p>Above ground only</p> Signup and view all the answers

Immediately ahead of each water supplied appliance and each slip joint or nonmetallic water supply connection is required a _____ valve.

<p>Control valve</p> Signup and view all the answers

After allowing for friction and other pressure losses, the residual water pressure shall be at least?

<p>15 psi</p> Signup and view all the answers

A water piping system with a pressure of 110 psi will require a?

<p>Pressure regulator and a strainer</p> Signup and view all the answers

Any water heater connected to a separate storage tank and having valves between the heater and tank shall be provided with a?

<p>Water pressure relief valve</p> Signup and view all the answers

Combination temperature and pressure relief valves shall be installed?

<p>Based on their listing requirements and the manufacturer's instructions</p> Signup and view all the answers

Galvanized steel piping installed under a concrete floor slab within a building shall?

<p>Have a machine applied protective coating</p> Signup and view all the answers

Cast iron fittings, up to and including two inches in size, when used in connection with potable water piping shall be?

<p>Galvanized</p> Signup and view all the answers

Water piping may be installed in the same trench with sewer piping made of?

<p>Cast iron</p> Signup and view all the answers

The available pressure at the water meter is 80 psi. At the highest supply outlet, 36 feet above the water meter, the pressure would be ______ PSI when sizing a water system according to chapter 6.

<p>62 PSI</p> Signup and view all the answers

Building supply pipes shall be no smaller than that required for the installation and in no case smaller than?

<p>3/4 inch</p> Signup and view all the answers

Copper tubing used for water piping under a concrete slab within a building shall be?

<p>Installed without joints where possible</p> Signup and view all the answers

CPVC water pipe may be used for hot and cold water distribution systems?

<p>Within a building</p> Signup and view all the answers

Flexible corrugated connectors or stainless steel for water heater connectors shall be limited to?

<p>24 inches</p> Signup and view all the answers

Unions shall be installed in a water supply system within 12 inches of?

<p>Regulating equipment</p> Signup and view all the answers

Study Notes

Water Supply and Distribution

  • An adequate supply of potable running water is essential for cleansing and sanitation.
  • Backflow prevention assemblies are crucial to prevent pollution or contamination of the potable water supply.
  • Ball cocks in water closet tanks must have the critical level of the water inlet at least 1 inch above the overflow pipe.

Vacuum Breaker Requirements

  • Vacuum breakers installed above urinals with flushometer valves must be positioned at least 6 inches above the highest part.
  • The same 6-inch minimum applies when installed above the overflow rim of a vat and downstream piping for lawn sprinkler systems.

Piping Regulations

  • PEX tubing cannot be installed within the first 18 inches of piping linked to a water heater.
  • Backflow prevention devices for steam boilers should be positioned 12 inches above the floor level.
  • Nonpotable waterlines must have outlets clearly marked with a caution sign indicating nonpotable status.

Materials and Installation Guidelines

  • PVC, asbestos cement, and PE are not approved for cold water piping inside buildings.
  • All malleable iron water fittings must be galvanized.
  • Water valves with sizes 2 1/2 inches and larger can be made of cast iron or brass.

Design Standards

  • Copper tubing must be bent using appropriate bending equipment to make directional changes.
  • Water piping systems should be designed based on minimum pressure requirements.
  • Copper water tube M is only permitted for above-ground installation.

System Components

  • Control valves are required ahead of each water supply appliance and at non-metallic water supply connections.
  • Residual water pressure after accounting for friction losses must remain at least 15 psi.
  • Systems with a pressure of 110 psi need a pressure regulator and strainer for safe operation.

Water Heater Safety

  • Separate storage tanks connected to water heaters must be equipped with a water pressure relief valve.
  • Combination temperature and pressure relief valves should be installed according to manufacturers' specifications.

Protection and Compatibility

  • Galvanized steel piping located under concrete floors needs machine-applied protective coating.
  • Cast iron fittings up to 2 inches in size must be galvanized for use with potable water.
  • Water piping can share trench space with cast iron sewer piping under certain conditions.

System Performance

  • At a water meter pressure of 80 psi, the pressure at a supply outlet 36 feet above will be 62 psi.
  • Building supply pipes cannot be smaller than 3/4 inch regardless of installation requirements.

Joint and Connection Requirements

  • Copper tubing under concrete must be installed without joints wherever feasible.
  • CPVC water pipe is allowed for both hot and cold water distribution within buildings.
  • Flexible connectors for water heaters should not exceed 24 inches in length.

Additional Installation Protocols

  • Unions in water supply systems need to be placed within 12 inches of regulating equipment to maintain system integrity.

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Test your knowledge with these flashcards covering Chapter 6 of the Uniform Plumbing Code. Focused on water supply and distribution, this quiz emphasizes essential plumbing regulations to ensure sanitation and safety. Great for students and professionals alike!

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