PRACTICAL PROBLEMS I Flashcards by Jomar Lagat

A hanger used to support a vertical pipe that traverses multiple floors

Correct answer: Riser Clamp

How well did you know this?

Not at all

Perfectly

used to support suspended multiple horizontal pipes

Trapeze

How well did you know this?

Not at all

Perfectly

used to supported suspended single horizontal pipe

Clevis

How well did you know this?

Not at all

Perfectly

What is the material applied to a thread of a pipe to compensate for workmanship in a screw joint?

Correct answer: Teflon Tape

How well did you know this?

Not at all

Perfectly

also known as Polytetrafluoroethylene

Teflon Tape

How well did you know this?

Not at all

Perfectly

used on a pipe to help secure a seal between threaded connectors

Pipe Dope

How well did you know this?

Not at all

Perfectly

Minimum and maximum safe space level of oxygen in a confined space.

Correct answer: 19.5% to 23.5%
Source: indsci.com

Additional info:
- With low oxygen levels being the biggest cause of death in confined spaces, accurate oxygen level measurements are essential.

How well did you know this?

Not at all

Perfectly

designed to cut through screws, bolts, and other metal fasteners.

Bolt Cutter

How well did you know this?

Not at all

Perfectly

ideal tool for cutting chains

Chain Cutter

How well did you know this?

Not at all

Perfectly

used for cutting wire

Diagonal Pliers

How well did you know this?

Not at all

Perfectly

A wrench with one fixed and one adjustable jaw at right angles to a straight handle

Correct answer: Monkey Wrench
Source: britannica.com

How well did you know this?

Not at all

Perfectly

features narrow jaws to fit into tight places.

Spud Wrench

How well did you know this?

Not at all

Perfectly

Sturdy, cast-iron housing and I-beam handle with full floating forged hook jaw, featuring self-cleaning threads with replaceable hook
and heel jaws.

Pipe Wrench

How well did you know this?

Not at all

Perfectly

A unique design multiplies the turning force applied to a pipe.

Compound Leverage Wrench

How well did you know this?

Not at all

Perfectly

LEL means _____.

Correct answer: Lower Explosive Limit (the lowest concentration (in air) that is needed for the gas to ignite and explode)
Source: enviromed.ca

How well did you know this?

Not at all

Perfectly

Pipe longer than 12 inches is regarded as _____.

Correct answer: Cut Pipe
Source: Audel

How well did you know this?

Not at all

Perfectly

a piece of pipe less than 12” in length threaded on both ends

Nipple

How well did you know this?

Not at all

Perfectly

connect two or more sections of pipe with the aim of maintaining continuity between them

Coupling

How well did you know this?

Not at all

Perfectly

How many turns does it take to operate a 6” double-disk valve?

Correct answer: 20.5
Source: USPVH.com

Additional info:

The AWWA operating formula for opening/closing a gate valve is 3 times the nominal valve size plus 2 or 3 turns of the operating nut. For example, a 6-inch gate valve would require 6 x 3 = 18 turns plus 2 or 3 turns, for a total of 20 to 21 turns.

How well did you know this?

Not at all

Perfectly

If you do find algae in your reservoir, you can combat them by ____ in your reservoir water.

Correct answer: lowering the pH
Source: royalbrinkman.com

Additional info:
- light reduction is also a natural way to get rid of algae

How well did you know this?

Not at all

Perfectly

Piping color codes are used when utility companies stake out piping locations. A yellow flag generally indicates _____.

Correct answer: Gas
Source: American Public Works Association

How well did you know this?

Not at all

Perfectly

reclaimed water, irrigation, slurry lines

Purple utility flag

How well did you know this?

Not at all

Perfectly

storm and sanitary sewers

green utility flag

How well did you know this?

Not at all

Perfectly

potable drinking water

blue utility flag

How well did you know this?

Not at all

Perfectly

phone and telecommunication lines

orange utility flag

electric power lines, cables, or conduit, and lighting cables

red utility flag

pre-marking the outer limits of proposed excavation

white utility flag

temporary survey markings, unknown/unidentified facilities

pink utility flag

Features a jaw opening parallel to the handle and a narrower hook jaw head. Provides easy entry into tight spots.

Correct answer: Offset Pipe Wrench Source: Ridgid

Assures a fast and easy grip for pipe working in restricted spaces or close to a wall.

End Pipe Wrench

Hex jaw design gives multi-sided, secure grip on all hex nuts, square nuts, unions and valve packing nuts.

Hex Wrench

12" Spud Wrench features narrow jaws to fit into tight places.

Spud Wrench

Brass pipe is one of the approved materials for water service piping. On what standard is it based?

Correct answer: ASTM B43

Standards Specification of CPVC Plastic Hot and Cold Water

ASTM D2846

Standards Specification of Threadless Copper Pipe

ASTM B302

Standards Specification of Carbon Steel Seamless Pipe

ASTM A53

In pipes, the higher the SDR, the _____.

Correct answer: thinner the wall of the pipe. Additional info: - SDR is Outer Diameter divided by the wall thickness

A simple tool used for opening up the end of a lead pipe in preparation for making a wiped joint.

Correct answer: Turnpin

for soft copper water tubing

Flaring Tool

for connecting PPR

Fusion Welder

generic tool for expanding various pipe materials

Pipe Expander

The following are grounds for non-issuance of the certificate of registration by the Board of Master Plumbers except for _____.

Correct answer: failure to pay the required fees (not a ground) Source: RA 1378

What tool is a long flexible rod up to 100 feet long, used to insert into a sewer line for cleaning and declogging?

Correct answer: Plumber's one-piece flat sewer tape Additional answer: - One-piece Flat Sewer Tape can be used on sewer and drain lines through 8" (200 mm) in diameter and up to 100' (30,4 m) in length.

Wet standpipes shall be located so that all portions of the buildings are within ___ of a nozzle attached to 22 meters of a hose

Correct answer: 6 m Source: RA 9514

A connector device or metal shackle with drilled ends to receive a pin or bolt and that is used for attaching or suspending parts.

Correct answer: Clevis Source: ASPE

A jaw-type mechanical device used to connect, as a hanger or support, or used to hold part of a piping system to a structural beam element (typically a steel beam).

Center beam clamp

A mechanical device with a channel adapter and hook rod that provides an off-center attachment to the bottom flange of a channel beam for a hanger, support, or other part of a piping system.

Channel clamp

A support device providing vertical adjustment consisting of a clevis-type top bolted to a formed steel bottom strap.

Clevis hanger

Hanger rod size for 4" pipe size

Correct answer: 3/8"

For 1/2" to 4"-

3/8" Rod Size

For 5" to 8"

1/2" Rod Size

For 10" to 12"

5/8" Rod Size

A preformed support or fastener, usually constructed in a cantilevered manner, with or without additional diagonal structural members for load stability.

Correct answer: Bracket Source: ASPE

A component used to brace structural assemblies and piping systems

Cable

Components added to a standard pipe support or hanger system to limit sway during movement such as during a seismic event.

Cable Sway Brace

An assembly or bracket device used to resist twisting or to restrain a piping run in the axial direction.

Axial Brace

A galvanized steel pipe can be cut with a ____ and ____.

Correct answer: Pipe Cutter and Hacksaw

a cutting tool used for machining, designed to slightly enlarge the size of a drilled hole, but with high precision; also used for deburring before threading

Reamer

suitable for galvanized steel pipe

14 TPI Hacksaw

A heavy sprocket chain that is slipped around a pipe, then attached to wrench handled and used on piping work especially large size pipe metal pipes and in areas that is not easily accessible

chain wrench

A shovel suitable for harder packed, even rock filled soils

Correct answer: Pointed Digger Source: trees.com

a flat shovel, and is used mostly for edging, transplanting woody perennials and small shrubs due to how easy it is to cut through roots, and trenching.

Square diggers

work well for digging in softer soils, and for transplanting plants.

Rounded diggers

For use in cleaning pipes of general material clinging to pipe walls.

Correct answer: Sharktooth Cutter Source: Ridgid

For main sewers blocked by roots, leaf debris, sticks, sawdust, cloth, and sacking.

Spiral Bar Cutter

For following up after augers have been used and to open up floor drains.

Spade Cutter

For blockages caused by hardened, glazed material such as chemical deposits.

Four Blade Saw Tooth Cutter

In installing a leak-proof connection using copper tubing without soldering, what will be the most appropriate tool or method to use?

Correct answer: flaring tool

used to ignite torch

striker

method to join lead pipes

wiping

used to join hubless cast iron pipes

shielded coupling

A hot water return line is drawn with _____.

Correct answer: Solid line with three dashes

Solid line with one dash

Cold water line

Solid line with two dashes

Hot water line

What should be the distance of the base of the ladder if it's working length is 15ft?

Correct answer: 3.75 ft Additional info: The foot of a ladder shall have a horizontal distance from the top support to the foot of the ladder one-quarter of the working length of the ladder.

A component of a personal fall protection system consisting of a flexible line for connection to an anchorage at one end so as to hang vertically or so as to stretch horizontally.

Correct answer: Lifeline Source: OSHA

flexible line of rope, wire rope, or strap that generally has a connector at each end for connecting the body belt or body harness to a deceleration device, lifeline, or anchorage.

Lanyard

a strap with means both for securing about the waist and for attaching to other components such as a lanyard used with positioning systems, travel restraint systems, or ladder safety systems.

Body Belt

a deceleration device that travels on a lifeline and automatically, by friction, engages the lifeline and locks so as to arrest the fall of an employee

Rope Grab

Which of the following fixture group qualifies the definition of battery of fixtures? 3 lavatories, and 2 water closets 5 water closets 1 water closet, 1 lavatory, and 1 shower 2 lavatories, 2 urinals, and 1 water closet

Correct answer: 5 water closets Additional info: - Battery of Fixtures: any of two or more similar adjacent fixtures which discharge into a common horizontal soil or waste branch.

An auger bit is used for drilling _____.

Correct answer: Wood Source: albanycountyfasteners.com; various websites

Copper piping used for medical gas systems should only be cut with a _____.

Correct answer: Copper tubing cutter Source: NFPA 99 Additional info: - NFPA 99 (Health Care Facilities Code) requires tubing to be cut square using a sharp tubing cutter that shall be free of Grease, oil, or other lubricants not suitable for oxygen service.

They install pipe systems that move liquids or gases under high pressure.

Correct answer: Steamfitters Source: Audel

lay clay, concrete, plastic, or cast-iron pipe for drains, sewers, water mains, and oil or gas lines.

Pipelayers

install and repair the water, waste disposal, drainage, and gas systems in homes and commercial and industrial buildings.

Plumbers

Excavated spoils must be kept _____ from trench edges.

Correct answer: 2' Source: OSHA

For trenching, vertical braces should be located every _____.

Correct answer: 8' Source: Audel

TPI of hacksaw blade used for general work shops

Correct answer: 18 TPI Source: benchmarkabrasives.com

TPI for large sections of mild materials

14 TPI

for cutting steel plates

24 TPI

for cutting hollow sections and tubings

32 TPI

Trenches shall be back-filled in thin layers of _____ above the top of the pipe with clean earth.

Correct answer: 0.3 m Source: RNPCP, Chapter 3

used in the electrical trade to cut, straighten, and bend wire, and also to twist wires together when making splices.

Lineman's Plier

pliers whose pivot point or fulcrum can be moved to increase the size range of their jaws

Slip Joint

pliers that can be locked into position, using an "over-center" cam action

Locking Pliers

Use to grip small objects, reach awkward places, holding wires, bend loops, and attach wires

Longnose Plier

Horizontal Stringers should be placed every ____'

PRACTICAL PROBLEMS I Flashcards

(97 cards)