Plumbing Code Refresher Flashcards

A complete set of 210 vocabulary flashcards covering the Plumbing Code refresher material for the Master Plumber Board Exam.

Sacrarium waste disposal

Must not be discharged into the sanitary drainage system but disposed of directly into the ground.

Wait pressure required to test water supply

$150\%$ of used water pressure.

Normal pressure

The pressure range measured over a period of $24$ hours.

Plumbing material not listed in the code for water piping

Aluminum.

Plumbing code

A set of regulations adapted by an administrative agency that has jurisdiction over material and design specification in plumbing.

Color coding for copper tubing type DWV

Yellow.

Minimum manhole dimension for a septic tank

$508\,mm$.

Estimated sewage flow rate for bowling alleys per lane

$283.9\,lpd$.

Estimated sewage flow rate for dance halls per person

$7.6\,lpd$.

Estimated sewage flow rate for elementary schools per person

$56.8\,lpd$.

Estimated sewage flow rate for public swimming pools per person

$37.9\,lpd$.

Maximum lead content allowed for pipes and fittings

$8\%$.

Approved method for making stack vent pipes water tight at the roof

Flashing material.

Minimum drinking fountain requirement in assembly places

$1$ per $75$ persons.

Hot water supply location on combination fittings

Left side.

Minimum development length of the trap arm

$2$ times the diameter of the trap arm.

Atmospheric vacuum breaker minimum height above flood level rim

$152\,mm$.

Ball joint

A type of pipe connection in which a ball-shaped end is held in a cuplike shell and allows movements in every direction.

Gravity tank vent screen mesh requirement

$14$ nor more than $18$ mesh per $25\,mm$.

Thrust block installation requirement

Required at all changes in direction, changes in size, values, and at all dead ends.

Industrial liquid waste handling

Must be pretreated to render them innocuous prior to discharge into a drainage system.

Class 2 fixtures

Fixtures used in factories, dormitories, office buildings and similar installations as classified by NPCP $1959$.

Critical Level (C-L) establishment agency

Established by the Testing laboratory.

Sterile equipment drainage method

Must be drained through an air gap.

Loop vent

A type of vent used for fixtures installed away from the wall.

Level 3 source of water supply (LWUA)

Individual house connection.

Separate venting requirement for branch length

Any branch more than $1.5\,m$ in length shall be separately vented.

Drainage fitting thread requirement

Must be tapped to allow $2\%$ grade.

Sanitary drainage discharge location for public health

Public sewer.

Sleeve size for foundation walls

One size larger than the pipe.

Material unsuitable for potable water systems

Concrete pipe.

Material unsuitable for hot water systems

Galvanized iron pipe.

Minimum water tank capacity for WC flushing

$4\,gallons$.

Trap seal

The water retained in a fixture trap after flushing.

Alley

A public space less than $3\,m$ but not less than $2\,m$ in width dedicated to the public.

Universal joint

A connection with a ball held in a cup-like shell allowing movement in any direction.

Branch vent

A vent pipe connecting from a branch of a drainage system to a vent stack.

Cap

A fitting into which the end of a pipe is screwed for the purpose of closing the end.

Corporation cock

A stop valve placed in a service pipe near its connection with the water main.

Dead end

The extended portion of a pipe closed at one end permitting stagnation of water or air.

Globe valve

A valve where flow is cut off by a circular disc fitting against the valve end parallel to the direction of flow.

House sewer

Part of a plumbing system extending from $0.6\,m$ from the inner face of the foundation wall to discharge.

Interceptor

A receptacle designed to prevent the passage of oil, grease, or lard into the drainage system.

Privy

An outhouse or structure used for deposition of excrement in rural areas.

Trap seal depth

The vertical distance between the dip and the crown weir of a trap.

Sump pit

A pit or receptacle at the lowest point of a basement floor to which liquid waste is drained.

Stand pipe

A vertical pipe usually used for the storage of water frequently under pressure.

Unit vent

An arrangement of venting where one vent pipe serves two traps.

Wet vent

A portion of a vent pipe system through which liquid waste flows.

Storm water

Portion of rainfall or precipitation that runs off on the ground surface after a storm.

Grounds for plumbing permit revocation

Improper conduct, bad faith, or violation of the code.

Soil pipe bend for horizontal to vertical flow

Short quarter bend.

Prohibited horizontal soil pipe fitting

Double hub or double tee branch.

Joint and connection tightness standard

Must be made permanently gas tight and water tight.

Roof terminal distance from openings

Must be extended above the highest opening at a distance of $2\,m$ away from any door or window.

Maximum distance of vent pipe from trap

$1.5\,m$.

Hub

A portion of the pipe sufficiently enlarged for a short distance to receive the end of another pipe.

Branch

Any part of the piping system in roughing-in other than the main, riser, or stack.

Individual vent

A back vent pipe line connecting directly with an individual trap and extended to a branch or main.

Battery of fixtures

Any of two or more similar adjacent fixtures which discharge to a common pipe.

Plumbarius

An individual who worked in the sanitary field of ancient Rome.

Vitrified and cement pipe joint requirement

Poured joint.

Backwater valve

A valve equipped on basement drain inlets subjected to backflow.

Stack terminal extension near openings

Must extend at least $0.3\,m$ if within $3\,m$ of doors, windows, or air shafts.

Standard percentage slope for horizontal branches

$2\%$.

Air test duration for plumbing systems

$15\,minutes$.

National Plumbing Code approval date

January 28, 1959.

RA 1378

The Law passed to regulate the trade of Master Plumber.

Drainage system maintenance requirement

Guard against obstruction, clogging, and deposit of solids.

Prohibited plumbing traps

Full S-trap, traps with movable internal parts, and bag type traps.

Ladder safety horizontal distance

$5\,ft$ for a $20$-foot ladder.

Confined space characteristic

Restricted access and egress.

Scaffolding guard rail threshold

Required when erected $10\,ft$ above the ground.

Class A fire extinguisher

Used on combustible materials and contains water.

Powder actuated tool misfire procedure

Keep the tool in position and wait $30\,seconds$.

90-degree fittings in standard piping arrangement

$6$-units.

Volume capacity ratio of 2-inch to 6-inch pipe

$9$ pipes.

Flashback arrestor purpose

Protects the operator from flame traveling into the hoses.

Horizontal Type M copper pipe support interval

$3\,meters$.

Mildly acidic PH value

$5.5$.

Copper tube for underground water distribution

Type K soft.

Prohibited method for joining cast iron waste pipe

Welded joint.

Dielectric union purpose

To prevent corrosion.

Glass piping field cut joining method

Bead to plain.

Bell and spigot cast iron installation orientation

Bell upstream.

Asbestos cement pipe depth under floor

$600\,mm$.

Maximum practical lift of shallow well jet pump

$25\,ft$.

Backwater valve type for building drains

Normally open.

Water logged pressure tank symptom

Well pump turns on as soon as a faucet is used.

Gear pump installation requirement

Must be installed with a pressure relief valve.

Bell trap

A type of trap not permitted in a drainage system.

Deep well jet location

Below the foot valve.

Flushometer flush adjustment method

Turn regulating screw counter clockwise.

Minimum length of a trap arm

$2$ pipe diameters.

Minimum vent size for 34-fixture unit sump

$2\,inches$.

Maximum vertical fall of a water closet trap arm

$0.6\,m$.

Flow-controlled roof drains for 90m x 50m roof

$10$ drains.

Bio-hazardous waste laboratory sink requirement

Cleanout above the flood level rim.

Percolation test

Determines the absorption rate of a septic field.

Medical gas piping joining method

Silver brazes.