PRACTICAL PROBLEMS II Flashcards by Jomar Lagat

Ladders used to gain access to roof shall extend at least _____ above the roof.

Correct answer: 0.9m (or 3 feet)
Source: OSHA

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A beginner at the trade who usually serves for to 5 years as a helper to a journeyman.

Correct answer: Apprentice Plumber

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has served his apprenticeship and is competent to perform the tasks of installing and repairing the plumbing system

Journeyman Plumber

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a person technically and legally qualified and licensed to practice the profession of master plumbing

Master Plumber

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The extension of a soil or waste stack above the highest horizontal drain connected to the stack.

Correct answer: Stack Vent
Source: RNPCP, Chapter 2

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the vertical vent pipe installed primarily for providing circulation of air to and from any part of the soil, waster of the drainage system

Vent Stack

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a vertical soil pipe conveying fecal matter and wastewater

Soil Stack

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the uppermost end of the stack vent above the roof

SVTR (Stack Vent Through Roof)

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What is a “powder room”?

Correct answer: half bath

Additional info:
- a half bath contains a toilet and sink but no bathtub or shower

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In which order is a water main disinfected?

Correct answer: flushing, dosing, flushing, testing

Additional info:
- Pre-disinfection flush – removal of any contamination prior to disinfection
- Disinfection – the water main will be filled with water containing chlorine within the specified residual range for a specified time period
- Flush – the chlorinated water will be flushed from the main – note. dechlorinating the water before disposing may be required to meet environmental requirements

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Water Closet that is simple in construction and yet highly efficient within its limitations

Correct answer: Washdown
Source: termiumplus.gc.ca

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particularly suitable for installation with flush valves or low tanks

Reverse Trap

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flushing action of the _________ bowl is accomplished by a jet of water being directed through the upleg of the trapway

Siphon Jet

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Water enters through diagonal punching around the rim of the bowl, creating a vortex that draws the water down into the rear trap with a swirling action that scours the walls of the bowl

Siphon Vortex

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Large, deep sinks used in mess-halls type facilities

Correct answer: Scullery Sink

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A deep sink, usually set low and used by janitors for emptying pails of dirty water and mop cleaning.

Slop sink

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a plumbing fixture usually located in the operating room in a hospital to enable personnel to scrub their hands prior to a surgical procedure

Scrub Sink

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A ______ sink makes it easy to wash larger items like pots, pans, and baking sheets. Commonly found in residential.

Farmhouse Sink

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The mounting height of a kitchen sink is _____.

Correct answer: 36” (914.4mm)
Source: ASPE

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height of lavatory

31” (787.4mm)

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height of laundry tray

34” (863.6mm)

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To fasten or hold a material or device to prevent movement, rotation, or displacement at the point of application.

Correct answer: Anchor

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A preformed appliance or assembly consisting of various components that, depending on its location, is used to hold and/or restrain a piping system from horizontal, vertical, and lateral forces.

Brace

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An attachment appliance used to connect a pipe directly to a structural element

Strap

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A mechanical device used to connect, as a hanger or support, or used to hold part of a piping system to a structural beam element.

Clamp

A laundry sink faucet with a hose-thread type spout must _____.

Correct answer: have a backflow prevention device Source: RNPCP, Chapter 6

A mixing valve that senses outlet temperature and compensates for fluctuations in incoming hot or cold water temperature is called a _____.

Correct answer: Thermostatic Valve Source: Louisiana State Plumbing Code

: senses incoming hot and cold water pressure and compensates for fluctuations in either to stabilize outlet temperature

pressure balancing valve

Vertical vent pipes for outdoor installations shall extend to at least _____ distant from any part of the roof that is used for other purposes.

Correct answer: 3.0 m Source: RNPCP, Chapter 9

distance of vent away from any lot line, alley and street boundary lines

0.9 m

extension of vent above roofs used for other purposes

2.1 m

vertical termination of vent above a roof

0.15 m

What is the likely issue if water leaks from the base of the faucet?

Correct answer: gasket or seal under the faucet Additional info: - if water leaks from the spout, the probable issue is the washer or cartridge - if water does not evenly flow from the spout, consider putting an aerator - if water leaks from the handle, the probable issue is the o-ring

Chemical not found in drain cleaners

Correct answer: Sodium Hydrochloride

Commonly known as lye

Sodium Hydroxide

commonly seen in acid drain cleaners

Hydrochloric acid

commonly known as bleach

Sodium Hypochlorite

How should fixtures be located to ensure the most economical installation?

Correct answer: as close together as possible Source: RNPCP, Chapter 4

A fixture carrier for fixtures is installed _____.

Correct Answer: During the rough-in phase of construction Source: josam.com Info: Installation of fixture carrier is aligned with the wall support studs before the finish wall is installed. Installation is done by competent journeymen and installers.

For flush tank supplies, the available pressure may not be less than _____.

Correct answer: 8 psi Source: RNPCP, Appendix A

minimum pressure for flushometer valves

15 psi

A nut that is screwed into place and presses down upon a gland bushing, which transmits the force exerted by the packing nut to the packing.

Packing Nut

A device that holds and compresses the packing and provides for additional compression by manual adjustment of the gland as wear of the packing occurs.

Packing Gland

A large nut-like component that secures the union thread and the union shoulder together.

Union Ring

The part of the valve housing through which the stem extends.

Bonnet

In a dye test, a dilution ratio of _____ must be obtained for each flush.

Correct answer: 100:1 Source: ASPE Additional info: - Dye test determines the evacuation of urine in the trap seal

How do you repair a leak on a plastic pipe fitting?

Correct answer: Cut fitting out and install new fitting Additional info: - Pliers can be used to pull off existing fittings

Bariatric water closets support weights of _____ pounds.

Correct answer: 500 - 1000 lbs Source: ASPE Additional info: Bariatric water closets are made to accommodate overweight and obese people.

Minimum storage tanks size (in cu.m) shall be calculated by dividing the building footprint area by _____.

Correct answer: 75 Source: Philippine Green Building Code

In a Ball Removal Test, the water closet must flush at least an average of _____ on the initial flush of three different flushes.

Correct answer: 75 Source: ASPE Additional info: - Ball removal tests replicate the density of human feces

Water closet tank ballcocks shall be installed with the vacuum breaker critical level at least ____.

Correct answer: 1 inch above the full opening of the overflow tube Source: RNPCP, Chapter 6

In the ink test of a water closet, the total length of the remaining ink line must not exceed _____.

Correct answer: 2 inches Source: ASPE

This is also known as close-coupled toilet.

Correct answer: Two-piece toilet

one with a two-piece tank and bowl fixture.

Two-piece toilet

one with the tank and bowl as one piece

One-piece toilet

has a triangular shaped tank; good for small bathroom

Corner toilet

In a centerset faucet, the inlet holes are _____ apart.

Correct answer: 4" Source: ASPE

spacing of the outer holes for spread faucets

Height of juvenile water closet rim height

Correct answer: 13" Source: ASPE

standard rough-in bowl outlet

12"(304.8mm)

children's water closet rim height

10"(254mm)

accessible water closet rim height

18"(457.2mm)

The back pressure test determines that the water seal remains in place when exposed to a back pressure of _____.

Correct answer: 2 1/2" Source: ASPE Additional info: - The Back Pressure determines that no sewer gas will escape through the fixture when high pressure occurs in the drainage system piping

The maximum flow rate for handheld bidet sprays must be _____ per minute according to PGBC.

Correct answer: 4.8 L Source: Philippine Green Building Code Additional info: - 4.8 L/min- maximum flow rate also for lavatory taps and kitchen faucets

Where does the soldering of a rigid copper tubing joint require the torch heat to be placed?

Correct answer: fitting Additional info: The torch shall be applied to the fitting particularly near the joint.

The effective thread length of a 3" screwed steel pipe is _____ long.

Correct answer: 1-1/2" Source: engineeringtoolbox.com

A 1" diameter pipe size has _____ threads per inch.

Correct answer: 11 1/2 Source: engineeringtoolbox.com

Increasing vents one pipe size will _____.

Correct answer: allow vents to be longer Source: RNPCP, Chapter 7 Table 7-5 Footnote

The purpose of "collector" in a solar water heating system

Correct answer: to absorb solar heat energy to heat water Source: sciencedirect.com; various sources

It is used to prevent aggregates, debris, and other unwanted objects from entering the storm drainage systems.

Correct answer: Catch basin Source: ndspro.com; opentextbc.ca; various sources

What is not a cause of running water?

Correct answer: Loose Closet Bolts Additional info: - Loose Closet Bolts cause water to leak beneath the toilet

What is a good practice when designing pipes from a rainwater harvesting tank for recycling?

Correct answer: pipes are labeled (pipes should be identified as non-potable)

The executive department of the Philippine Government responsible for promoting peace and order, ensuring public safety and strengthening local government capability aimed towards the effective delivery of basic services to the citizenry.

Correct answer: Department of Interior and Local Government (DILG) Source: PGBC

the executive department of the Philippine Government responsible for preparing, integrating, coordinating, supervising and controlling all plans, programs, projects and activities of the Government relative to energy exploration, development, utilization, distribution and conservation

Department of Energy (DOE)

the executive department of the Philippine Government responsible for supervising and managing the different programs and implementing rules governing the use and development of the country's natural resources

Department of Environment and Natural Resources (DENR)

executive department of the Philippine Government that functions as the engineering and construction arm of the Government tasked to continuously develop its technology for the purpose of ensuring the safety of all infrastructure facilities and securing for all public works and highways the highest efficiency and quality in construction

Department of Public Works and Highways (DPWH)

Remove burrs from the inside ends of a galvanized pipe with a _____.

Correct answer: reamer Pipe reamers are used to deburr pipes before threading.

Maximum Flush rate of water closet as recommended by EPA of 1992

Correct answer: 1.6 gpf Source: EPA of 1992/ ASPE Additional info: - 0.4 gpf- for ultra-low-flow Water Closets

Standard rough-in of bowl outlet from the back wall.

Correct answer: 12" Source: ASPE

What is the name of the special tool designed to reach the hex jam nut beneath a fixture?

Correct answer: basin wrench Additional info: - Basin wrench is an ideal tool for use in tight spaces and under sink applications

A hissing sound from a toilet after it refills usually indicate that _____.

Correct answer: fill valve is faulty Additional info: - a hissing sound indicates that water is still leaking from the tank. The fill valve/ball cock and float ball assembly might be faulty. - another possible issue is that the flapper does not seat on the gasket properly

For use for finish cleaning required of boiler tubes and heat exchangers.

Correct answer: Flue Brush Source: Ridgid

For use when vigorous action is required for cleaning of scale in pipes and boiler tubes

Chain Knocker

For final removal of material adhering to walls and certain roots of fibrous nature

Expanding Finish Cutters

For grease blockage in lines leading from garbage disposal unit or waste pipe

Grease “C” Cutter

Flow Rate of Self-metering Lavatory for public use

Correct answer: 0.25 gal Source: EPA of 1992/ ASPE

Flow Rate for private lavatories

2.2 gpm

Flow Rate for public lavatories

0.50 gpm

Flow Rate for water closets

1.6 gpf

Flow Rate for showers

2.5 gpm

PRACTICAL PROBLEMS II Flashcards

(90 cards)