Practical Problems-Pre Boards

1-1⁄4" and sealed with putty or caulk

A lavatory pop-up assembly is _____.

open position

When the handle of a butterfly valve is aligned with the pipe, it is said to be in what position?

set in the new packing

For globe valves which has leak at the stem and packing nut, the best thing to do is ____.

complete a hazard assessment

What procedure is used to determine if additional PPE is required for a specific task on a jobsite?

Grouted

To minimize the threat of polluting a well, the casing is _____.

friction losses

Installation of water service must be direct and in short manner. Possible turns or offset elbows should be avoided because the element will incur _____.

fitting

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

unsound practice

Unloading of pipes and letting it roll on the ground is _____.

Caulk

A watertight seal between a drain assembly and fixture is created using putty or what material?

38 mm

What is the minimum size of a fire hose outlet of an interior wet standpipe?

greater than the height of the internal removable baffle

An interceptor must have a clearance above it that is _____.

37.8 psig

A pump capable of generating 125 feet of head of gasoline would provide a pressure of _____.

basin wrench

A specialty plumbing tool with a rotating, self-adjusting gripping head and long handle. It is used to tighten and remove the mounting nuts of faucet tailpieces.

3

Identify how many ¾" x ¾" x ½" tees are in the figure.

12"

Maximum length of nipple fitting

Lets thermal expansion of water to maintain working pressure

The principal function of expansion tank in a hot water system.

damper

What is the air duct valve?

Fluid Mechanics

A branch of physics concerned with the behaviour of liquids and gases, both in rest and motion

Drainage cannot be affected by gravity

In what instances that a mechanical drainage will be used?

grey

What is the color coding of an industrial piping system?

water plug

For a leaking concrete water tank due to crack, which of the following repair material is most suitable and economical to seal the crack without disrupting the water supply of the building?

Cold water line for fixture

Letter D indicates _____.

that is used to minimize injury from a possible violent reaction of the tool

Many power tools have a side handle

Copper and Stainless Steel

Which of the following are considered the best two pipe materials for medical vacuum systems in healthcare facilities?

Urinal (Stall)

Identify Plumbing Fixture Q

150

A horizontal drainpipe has an existing load of 30 fixture units. After adding a new discharge pipe from an ejector rated at 60 gpm, the total load on the horizontal drainpipe will be how many FU?

Meter

The _____ stop shuts off or controls the amount of water flow into a building.

Setting the air intake to more appropriate setting

If there is a problem with spa jet to make the warm water ideal for the user, which is the most appropriate troubleshooting procedure?

Curb Cock

Is a valve installed on water service to turn on or off the flow of potable water in the building

8

How many bolt holes are there in a Class 150 pipe flange that is 100 mm in diameter?

jetter

A drainage cleaner that uses high-pressure to remove clogs

Crown weir to top dip

The reference in measuring the depth of a trap seal of the P-trap.

Soldered joint

A joint obtained by joining of metal parts with metallic mixtures of alloys that melt at a temperature up to and including 840 degree F is what form of jointing?

All-Service Jacket

A lamination of brown (kraft) paper, fiberglass cloth (skrim) and a metallic film. A vapor barrier is also included. It is most often used to cover fiber-glass insulation.

30 quarts per minute

1 Fixture unit rate of flow is nearest equivalent to?

foot valve

What do you call the valve installed at the end of a pump to prevent the loss of prime of the pump?

Tool D

A double jaw gives fast, ratchetlike action in either direction.

Elbow Turned Up (Flanged)

Identify the plumbing symbol

Combined sewer

Which of the following commonly carries both storm water or sewage?

0.019

What is the consumption demand of a bathtub faucet?

Ball valve

Which of the following is not a component of a typical water closet?

pollution control officer

In a company, who is in-charge as infection control officer?

Pressure Sustaining Valve

What is a valve which regulates water pressure from the water main?

1:608 m is required

A rectangular channel with depth of 300 mm and a width of 450mm has average flow velocity of 0.8 m/sec and C = 55. Calculate the gradient.

Dry fitting

This describes the putting of pipe and fittings together without making a permanent joint for the purpose of checking the feasibility of an installation.

27

How many turns does it take to operate an 8" double-disk valve?

Back-siphonage

Which of the following terms best describes the straw-like effect of creating negative pressure that can draw liquids upward?

14 wsfu

Calculate the total WSFU, if WC= 5 and Lavatory = 2.

mechanical or manual means

Surfaces to be joined by soldering or brazed shall be cleaned bright by _____.

Valve seat wrench

This is used to remove square and octagonally-shaped threaded faucets. It has a right angle bar with one end for square nuts and other octagonal.

Flanging and flaring

What two tools should you use to flare the ends of a flexible copper tubing?

potable water pipe

Plumbing pipe color coded in aqua-blue stripe or band is identified as what pipe?

Scoop Shovel

Identify Letter G.

chain wrench

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

20

Pipe is supplied in straight lengths in sections from 12 feet to ____ feet long.

teeth per inch

Reciprocating saw blades are selected based on the type of material being cut, length, and?

round pointed shovel

A type of shovel used for general digging. Penetrates moist clays and sands.

reaming

What should be done after cutting a copper?

To apply even pressure and rotate the pipe

In cutting a copper pipe tubing or other thin-walled pipe materials, what is an important consideration?

Suction Tank

A tank that is used so that the pneumatic tank or other pump sucks the water from this tank and not the public main, so that it will not deprive the neighbors of water due to pressure.

Always have a backflow prevention device installed

A handheld shower hose that could be submerged in bath water must

3/4"

Effective thread depth of a 3/4" pipe

fluid compressibility

A sudden valve closure in one branch of a pipeline system has inflicted water hammer in other branches as well. What is the explanation for this phenomenon?

Seamless Pipe

What type of steel pipe is manufactured without any welding joints by extruding a billet through a die?

is roughed in at 12 1⁄2" from the wall stud

The center of a drain that serves a 12" rough toilet installed along a wall with 1⁄2" drywall ____.

Deaeration

Which of the following processes is used to remove dissolved gases, such as oxygen and carbon dioxide, from liquids in order to prevent corrosion and improve process efficiency?

Ell

Identify H

Plug valve

The valve which is an adoption of ball valve

semi-circular

These rainwater pipe shapes may be used and are considered when enclosing an inscribed circle equivalent to the drain leader diameter, except _____.

sanitary tee

Fitting used in septic tank.

Pipe Extractor

Identify tool E.

Wrenches

Tighten the fitting by using two _____.

to turn or hold steel pipes

What is the main use of chain wrench?

distribution line

The 40mm dia. pipe is used for what purpose?

Thermoplastics

Plastic pipes are manufactured from _____.

soapy water to the exterior of the piping

Leaks in gas piping shall be, in the most practical way, located by applying _____.

liquid line

In PD 856 Sanitation Code of the Philippines, the effective depth of a septic tank is measured from the bottom of septic tank to the _____.

Potability

One of the first steps in the selection of a suitable water supply source.

float valve

What valve regulates the intake of gravity tank?

seating seal is not holding against the heavy discharge pressure of each flush

What would be the probable cause of a water closet leak of the floor connection?

Ball Valve

Which of the following valve offers the least flow resistance?

high flush toilets

Which of the following is not a green building initiative?

Spiral Bar Cutter

Identify Auger E.

1 cm on plan = 0.75 m on actual

In a drawing, what does the scale of 1:75 mean?

Plug

Which of the following listed fitting do not have the similar function?

125

The granule test is intended to simulate a flush of water feces in the case of diarrhea. The initial flush must result into no more than how many granules on average to remain in the bowl?

Float Valve

Identify #4.

Vent

Identify A.

Exposed Back Spud for Water Closet

Identify item C

maximum roof area

The size of semi-circular bottom roof gutters shall be based on the _____.

Vacuum Cleaning

Identify item D

thermocouple

It produces small current when heated. It also acts as a safety component of the burner.

silver brazes

How do you join medical gas piping?

food is handled

Gravity grease interceptors shall not be installed in any part of the building where ______.

thrust block

A concrete pipe restraint utilized to prevent pipe joints from separating under the force carried fluids.

fire hydrant

A cylindrical tank which is a connection point by which fire fighters can tap into a water supply.

Face to face

The most reliable method of measuring and cutting of pipe connection

1/4 inch

How much thread must you extend beyond the die stock to completely thread the pipe's end?

Flexible Copper Tubing

_____ comes in coils of 60 or 100 feet. Types of K and L can be used above an below ground. Both types have the advantage of bending tool for installation.

Siphon Vortex

It is considered to be the most quiet, most efficient and most sanitary water closet. This type of bowl develops its flushing action through the water entering through diagonal holes around the rim which creates a swirling action which forms a vortex in the center