SPDI I,II,REFRESHER Flashcards by Jomar Lagat

The minimum size of a water service pipe is _____.

19 mm

How well did you know this?

Not at all

Perfectly

The smallest diameter pipe that can be installed in a DWV system is _____.

1 1/4” or 32 mm (for wash basin (lavatory single) or drinking fountain (31 mm in RNPCP)

How well did you know this?

Not at all

Perfectly

The distance between a water heater and the union on the water lines shall not be more than _____.

12”

How well did you know this?

Not at all

Perfectly

A pH below 7 indicates _____.

Acidic

How well did you know this?

Not at all

Perfectly

pH above 7

basic or alkaline
-all alkali are bases
- all bases are not alkali

How well did you know this?

Not at all

Perfectly

pH 7

neutral (WATER)

How well did you know this?

Not at all

Perfectly

The dip tube on a cold-water supply should terminate _____ above the bottom of the tank.

Correct answer: 8”
Source: Audel

How well did you know this?

Not at all

Perfectly

The type of valve incorporated in corporation stop.

Correct answer: Gate Valve (The corporation stop shuts the flow on or off)

How well did you know this?

Not at all

Perfectly

The hot water system that is an efficient type, generally used in building of extreme heights.

Correct answer: Overhead Feed and Gravity Return System
Source: PDE by Max Fajardo

How well did you know this?

Not at all

Perfectly

cold water supply system that supplies water to the plumbing fixtures by means of gravity

Overhead Feed System

How well did you know this?

Not at all

Perfectly

cold water supply system
innovation of the air pressurized water distribution

Direct Up-feed Pumping System

How well did you know this?

Not at all

Perfectly

cold water supply system
commonly used in small residential houses

Up-feed and Gravity Return System

How well did you know this?

Not at all

Perfectly

This tank holds a salt solution that flushes the mineral tank, replacing calcium and magnesium ions with sodium.

Correct answer: Brine Tank

How well did you know this?

Not at all

Perfectly

process for curing hardness

Ion Exchanger

How well did you know this?

Not at all

Perfectly

tank containing small beads of synthetic resin for curing hardness

Mineral/Resin Tank

How well did you know this?

Not at all

Perfectly

The following are physical traits of water except _____.

Correct answer: Dissolved Oxygen
Source: element.com

How well did you know this?

Not at all

Perfectly

the level of free, non-compound oxygen present in water or other liquids. It is an essential parameter in assessing water quality because of its influence on the organisms living within a body of water.

Dissolved Oxygen

How well did you know this?

Not at all

Perfectly

The potable water system or part thereof shall be filled with water-chlorine solution containing not less than ____ of chlorine and allowed to stand for 3 hours.

Correct answer: 200 ppm
Source: Uniform Plumbing Code

How well did you know this?

Not at all

Perfectly

The potable water system or part thereof shall be filled with water-chlorine solution containing not less than ____ of chlorine and allowed to stand for 24 hours.

50 ppm or 50 mg/L.

How well did you know this?

Not at all

Perfectly

Where is a stormwater outfall typically found?

Correct answer: rivers

Additional info:
- Stormwater outfall is a discharge point of stormwater into a larger water body

How well did you know this?

Not at all

Perfectly

The presence of ____ causes bad taste and odor in water.

Correct: Algae
Source: PDE by Max Fajardo

How well did you know this?

Not at all

Perfectly

causes Hardness

Calcium and Magnesium

How well did you know this?

Not at all

Perfectly

causes Corrosion

Carbon Dioxide

How well did you know this?

Not at all

Perfectly

A mechanical device used to circulate hot water to the plumbing fixtures. Recommended for large building where difficulty of providing natural circulation of hot water is encountered

Correct answer: Pump Circuit System
Source: PDE by Max Fajardo

How well did you know this?

Not at all

Perfectly

Hot water consumption for factories

Correct answer: 4 to 6 Source: PDE by Max Fajardo

Hot water consumption for OFFICE

4 to 5 gpph

Hot water consumption for APARTMENTS

8 gpph

Hot water consumption for HOTELS

8 to 10 gpph

The water which comes from lavatories, floor drains, laundry tubs is referred to as _____.

Correct answer: Gray Water

the wastewater from bathrooms and toilets that contains fecal matter and urine.

Black Water

When the well is excavated in the confined aquifer, and the water in the well reach over the water table but not on the surface of the earth. Such a well known as an _____.

Correct answer: Artesian Well Source: theconstructor.org

When a well is excavated in the confined aquifer, and the water is flowing over the well or on the surface of well. Such a well called as flowing well.

Flowing well

require more elaborate equipment of several types, depending on the geology of the site. They measure up to 300 m (984 ft).

Drilled well

dug with earth augers, usually less than 30 m (100 ft deep)

Bored well

What is a treatment for water acidity?

Correct answer: Passing through marble filter

a method to remove turbidity

Filtration

a method to remove color in water

Manganese Zeolite Filtration

type of disinfection

Chlorination

Size of downspout for a 350sqm roof area in a place with prevalent rainfall rate of 102 mm.

Correct answer: 102 mm Source: Table 11-1

In areas with high rainfall intensity, which driveway material can be prone to flash flood?

Correct answer: asphalt - asphalt and concrete limits water absorption, increasing surface run-off

When copper and steel contact each other, especially when dampness is present, a chemical action called _____ occurs.

Correct answer: Electrolysis Source: Audel

This level of water supply is also referred as communal faucet system.

Correct answer: Level 2

This level of water supply is also referred as Point Source

Level 1

This level of water supply is also referred Waterworks Systems or Individual House Connections

Level 3

What might be the reason why riprap is placed at the end of a storm drainage pipe?

Correct answer: to dissipate the energy of water Additional info: - riprap is provided to slow down the water as it exits the pipe

The pressure required to test water piping.

Correct answer: 150% working pressure Source: RNPCP, Chapter 6

The transition from the solid phase to the gas phase without passing through an intermediate liquid phase.

Correct answer: Sublimation

the phase change from gas directly to solid, with no intermediate liquid phase

Desublimation or deposition

process of a liquid's surface changing to a gas

Evaporation

Most practical pump used for hot water system

Correct answer: Centrifugal pump Source: PDE by Max Fajardo; ksb.com; various websites

commonly used for pumping high viscosity fluids such as oil, paints, resins or foodstuffs.

Gear Pump

a device that moves water from your basement to the outside of your home

Sump Pump

a type of positive displacement pump where the high-pressure seal reciprocates with the piston

Piston Pump

Water Code of the Philippines

Correct answer: PD 1067

PD 1096

National Building Code of the Philippines

PD 856

Sanitation Code of the Philippines

PD 1185

Old Fire Code of the Philippines

Characterized by a low Reynold number. This occurs when the fluid flows in infinitesimal parallel layers with no disruption between them.

Correct answer: Laminar Flow (or Streamline)

Agency that set the criteria for the quality of drinking water from meteoric surface or underground sources.

Correct answer: National Standards for Drinking Water Source: PD 1096, Chapter 9

NWRB

National Water Resources Board- manages and regulates all water resources and services

accredited by DOH shall perform drinking-water quality examination for regulatory purposes

DOH- Department of Health- Laboratories

agency responsible for management, development, and proper use of the environment and natural resources; agency that permits the connection to private sewage disposal system

DENR- Department of Environment and Natural Resources

Which process is mostly associated with purification of water?

Correct answer: Evaporation Additional info: - impurities are left behind once water turns to vapor

85 Kpa = _____ feet

Correct answer: 28 FEET Additional info: 1 Kpa= 0.145 psi 1 psi= 2.31 feet

Heat transfer occurs through electromagnetic waves without involving particles.

Correct answer: Radiation Source: byjus.com

the heat transfer takes within the fluid

Convection

heat transfer occurs between objects by direct contact

Conduction

In a gas water heater, the purpose of the small hole drilled in the dip tube near the top is _____.

Correct answer: to break siphonic action Source: Audel

Pipes installed to provide flow of air to or from drainage system or to provide a circulation of air within such system to protect trap seals from siphonage and backpressure

Correct answer: Vent System Source: RNPCP, Chapter 2

a pipe or opening used for ensuring the circulation of air in the plumbing system

Vent Pipe

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

Vent Stack

a pipe connecting upward from a soil or waste stack below the floor and below horizontal connection to an adjacent vent stack

Yoke Vent

Hepatitis B can be transmitted through _____.

Correct answer: Body fluid contact Source: cdc.gov Additional info: - Hepatitis B is not spread through sneezing, coughing, hugging, or breastfeeding - Hepatitis B virus is found in saliva, but it is not believed to be spread through kissing or sharing utensils - Hepatitis B can only be transmitted through skin if there are breaks in the skin

A tank made of heavy-duty stainless sheet of diameter varying from 60 to 130 cm and not more than 5 meters long.

Correct answer: Storage Tank Source: PDE by Max Fajardo

A tank made of heavy-duty stainless sheet of diameter varying from 30 to 60 cm diameter tank and not more than 180 cm long

Range Boiler

mechanical device used to circulate hot water to the plumbing fixtures

Pump Circuit System

The method used for transferring heat in a gravity domestic hot-water circulation system.

Correct: Convection Source: Audel

the process in which energy in the form of heat is sent through space from atoms and molecules as they undergo internal change.

Radiation

the transference of heat by the passage of energy, particle by particle.

Conduction

transport of an atmospheric property solely by the mass motion (velocity field) of the atmosphere

Advection

the transference of heat by the upward movement of a warm light air current.

Convection

Refers to the maximum and minimum pressure at which proper function of the water supply system can be maintained.

Correct answer: Critical Pressure Source: PDE by Max Fajardo

loss in the rate of flow due to friction between the water and the walls of the pipe

Head Loss by Friction or Friction Head Loss

refer to variations in pressure between the water main and the outlet end of the water service

Pressure Loss

refers to the pressure range measured over a period of 24 hours

Normal Pressure

DFU of Urinal stall, separate trap

A sanitary sewer that conveys sanitary waste to a dispersal plant.

Correct answer: Intercepting Sewer Source: PDE by Max Fajardo

Smaller in diameter than intercepting sewer. It terminates into the intercepting Sewer

Tributary Sewer or Contributing Sewer

oldest type of public sewer that conveys both storm water and sanitary wastes

Combination Public Sewer

Water above the filter sand that provides hydraulic head for the process

Correct answer: Supernatant Source: ce.memphis.edu

a hypogeal biological layer; consists of biologically active microorganisms that break down organic matter German for dirt cover

Schmutzdecke

refers to the set of substances in a septic tank which are lighter than water

Scum

solids that settle on the bottom

Sludge

Water for domestic use comes from these source except _____.

Correct answer: sea water Additional info: - sea water's salt content makes it poisonous for human use

What is the purpose of a weir outlet?

Correct answer: To control the overflow of stormwater Source: hydrocad.net; practical.engineering Additional info: - A weir is usually modeled as an outlet device that controls the discharge from a pond.

Water connection size for flushometer-tank WC

Correct answer: 10 mm Source: RNPCP, Appendix A

Water connection size dental unit or cuspidor, lavatory, and flush tank WC

10MM

Water connection size urinal stall

19 mm

Water connection size urinal stall wash sink, circular or multiple, bathtub, bidet, etc.

13 mm

It refers to the transmission of pathogens through vehicles such as water, food, and air.

Correct answer: Vehicle

An individual capable of transmitting a pathogen without displaying symptoms

Carrier

biological vector, an animal (typically an arthropod) that carries the disease from one host to another

Vector

Contact transmission includes direct contact or indirect contact (person-to-person, droplet sprays, etc.)

Contact

Water Quality Guidelines and General Effluent Standards of 2016

Correct answer: DENR AO 2016-08 Additional info: - the AO provides guidelines for the classification of water bodies in the country, evaluation of water quality, and set the general effluent standards

A well dug with the use of earth augers.

Correct answer: Bored well

A steel drive-well point is fitted on one end of the pipe section and driven to earth.

Driven well

require more elaborate equipment of several types, depending on the geology of the site.

Drilled well

Cold water that enters the top of a water is funneled to the bottom of the tank via _____.

Correct answer: Dip Tube Source: brickmua.com; various websites

attract the sediment and corrosive elements (like minerals in the water) so that they corrode the anode rod rather than the inside of your water heater tank.

Anode Rod

brings exhaust gases from the water heater to the outdoors

Flue

Suspended solids are removed from the water by gravity settling and deposition.

Correct answer: Sedimentation Source: oregon.gov; various websites

The process in which solid particles in a liquid or gaseous fluid are removed by the use of a filter medium that allows the fluid to pass through while retaining the solid particles

Filtration

The goal of disinfection is to kill any remaining bacteria in the contact chamber.

Disinfection

Air is pumped into the aeration tank/basin to encourage conversion of NH3 to NO3 and provide oxygen for bacteria to continue to propagate and grow.

Aeration

What is the area called "zone of saturation" in a well?

Correct answer: the area below the water table Additional info: - Water table is the boundary between the saturated and unsaturated zone - Unsaturated zone is the area above the water table

Filtration through activated carbon purifier filtration is a correction for the presence of _____ in the water.

Correct answer: Taste or Odor Source: PDE by Max Fajardo

can be cured by Chlorination by sodium hypochlorite or chlorine gas

Pollution

can be cured by precipitation by filtration through manganese zeolite oxidizing filter

Color

can be cured by filtration

Turbidity

Standard Specification for Poly(Vinyl Chloride) (PVC) Plastic Pipe

Correct answer: ASTM D1785

An alarming device that produces a buzzing sound which is caused by the rapid vibration of armature.

Correct answer: Buzzer Source: DepEd Information Sheet

an alarm that produces an audible alarm tone when electrical energy is applied

Bell

applies current to an electromagnet pulled the bell's clapper against the bell or gong and gave one chime

Single-Stroke Bells

a device that makes a loud prolonged sound as a signal or warning

Siren

It injects large quantities of fresh air into this compartment to mix the compartment’s entire contents and to provide oxygen for the aerobic digester process.

Correct answer: Aerator Source: Audel

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

Correct answer: Bonnet Source: ASPE

What is the standard specification for seamless copper water tube?

Correct answer: ASTM B88

Standard Specification for Copper Alloy Strip for Use in Manufacture of Electrical Connectors or Spring Contacts

ASTM B888

Standard Specification for High-Test Gray-Iron Castings

ASTM A88

Which type of fire line installation has become obsolete and seldom installed?

Correct answer: Dry Standpipe Source: How to Design and Install Plumbing by A.J. Matthias, Jr.

the fire department can attach its pumping equipment

Wet Standpipe with Siamese Connection

Water is immediately available, therefore the installation is a very practical one.

Wet Standpipe

Pipe material used for LPG

Correct answer: PE Source: NFPA 58

How do you connect PPR?

Correct answer: fusion welding Source: pprsupply.com; ppr.almatherm; various websites

slip over the outside of two pipes to connect them, usually permanently

coupling

How do you connect pvc, cpvc, abs

solvent welding

How do you connect PEX

crimping

Diameter of Class I System hose

Correct answer: 64 mm Source: RA 9514

Diameter of Class II hose

- 38 mm

Consists of bacteria, algae, fungi, silt, protoza, and other colloidal matters making the water colored and acidic

Correct answer: suspended and colloidal materials Source: PDE by Max Fajardo

Consists of carbon dioxide, hydrogen sulfide, methance, oxygen, and nitroneous and organic compounds

Entrained gases

Consists of calcium, magnesium sodium, iron and manganese

Dissolved Minerals

Consists of entrainment of radioactive substances from mining or processing ores

Radioactive materials

An approved pressure reduction device shall be permanently installed where static pressure of a wet standpipe exceeds _____. A.12 bar B. 7.2 bar C. 6.9 bar D .9.8 bar

Correct answer: 6.9 bar Source: RA 9514 Additional info: - 1 kg/cm^2- 0.98 bar - 1 psi- 0.069 bar

The pipe connection in which a ball is held in a cup-like that allows movement in every direction.

Correct answer: Ball Joint Source: RNPCP, Chapter 2

What Fire Extinguisher is least compatible for Class B Fires?

Correct answer: Wet Chemical

Can be used for Class A and B

Foam

May be used for Class A, B, C, and D

Dry Powder

May be used for Class B and Electrical

Carbon Dioxide

Fire extinguisher used for Class D fires

Correct answer: Dry Powder Extinguisher (also for Class A, B, and C) Source: umb.edu

for Class A fires

Water Extinguisher

for Class A and B

Foam Extinguisher

Wet Chemical

for Class A and F

A fitting that is used to close an open fitting

Correct answer: plug Source: Audel

used to close an open pipe

cap

used to close an open fitting

plug

used to reduce the size of an opening

bushing

provide convenient connections that can be easily unmade

unions

Diameter of dry standpipe if the highest outlet is 23 m or less

Correct answer: 102 mm Source: RA 9514

diameter of dry standpipe if the highest outlet is higher than 23 m

153 mm

The device that operates automatically when refilling the water tank after each discharge and shutting off completely when the tank is already full.

Correct answer: Float Valve Source: freedrinkingwater.com

a form of check valve, installed at the bottom of Pump suction line, inside the wet well.

Foot Valve

a valve that controls the pressure of a fluid or gas to a desired value, using negative feedback from the controlled pressure.

Pressure Regulating Valve

also called a one-way valve, is a device that allows the flow of fluids to move only in one direction

Check Valve

It spatters or scatters the effluent in drops or small blobs wherein they are mixed with the air

Correct answer: aerator Source: PDE by Max Fajard

designed to overcome tendency of the falling waste to stock up excessive back pressure at the bottom of the stack

Deaerator

Minimum diameter of combination standpipe

Correct answer: 150 mm Source: RA 9514

If the bell has hammer, the buzzer has _____.

Correct answer: Metal strip Source: DepEd Information Sheet

a thin sheet of electromagnetic materials which vibrates when electromagnet is energized and produces a buzzing sound.

Metal Strip

part of an electric bell; This is a small ball attached to the armature which strikes the gong.

Hammer or beater (striker)

part of an electric bell; A concave disc that produces loud sound when stuck by the hammer.

Gong bell

A liquid drain cleaner has a pH Level categorized as _____.

Correct answer: Basic

Which is typically not found on a pump curve? A. net positive suction head B. flow rate C. pipe diameter D. efficiency contour

Correct answer: C. pipe diameter Additional info: - another info that can be found on a pump curve is the impeller size

All dry standpipes shall be equipped with a two-way 63 mm outlet above the roof. All outlets shall be equipped with _____.

Correct answer: gate valves Source: NBC; PD 1096

A small pump connected to a fire sprinkler system to maintain pressure in the sprinkler pipes

Correct answer: Jockey pump Source: ASPE Volume 1

used for increasing pressure in of a water source when that source is not adequate for the system (fire sprinkler system)

fire pump

The minimum diameter of a dry standpipe requiring a 3-way Siamese connection

Correct answer: 125 mm Source: National Building Code

2-way siamese connection

100 mm dry standpipe

4-way siamese connection

150 mm dry standpipe

In an ordinary hazard, the coverage of 1 sprinkler head is _____.

Correct answer: 12 sqm Source: NFPA Chapter 13

Vents suitable for listed draft-hood equipped, gas-fired appliances, including most domestic heating and hot water systems

Correct answer: Type B vents Source: nachi.org

for venting listed gas-fired vented wall furnaces or gas-fired vented recessed heaters

Type BW

Use Type BH gas vents only for positive or negative pressure venting gas appliances producing flue gasses at Class I (up to 245 °C) or Class II (up to 135 °C) temperatures

Type BH

designed for venting approved oil-fired and natural-gas appliances that produce draft hood flue gasses that do not exceed a temperature of 570º F (299º C), or 926º F (299º C) for 10 minutes in an over-fire situation

Type L

The design, construction, and operation of the deep wells for the abstraction of groundwater shall be subject to the provisions of _____.

Correct answer: Water Code of the Philippines Source: NBC; PD 1096

A type of Globe valve which has a wide bearing surface producing good resistance to the cutting effects of scale, dirt, and other kinds of foreign matter found inside the pipe

Correct answer: Plug Source: ASPE

has a pressure-tight bearing between the disc and the seat recommended for cold water and any temperature service

Conventional Disc

does not fit into the seat opening, but over it, much as a bottlecap fits over the bottle opening

Composition Disc

a single tapered disc, thin at the bottom and thicker at the top

Solid Wedge

All interior wet standpipes shall be connected to a street main not less than ___ in diameter.

Correct answer: 4" or 100 mm Source: NBC; PD 1096

When installing _____, the authority having jurisdiction shall require evidence of the competency of the installers.

Correct answer: medical gas piping Source: UPC

The height of the tub should be between _____ from finished floor level.

Correct answer: 0.45 m - 0.50 m Source: UN Standards

Fire service connection in street front for Dry Standpipe shall be _____.

Correct answer: 46 to 122 cm Source: RA 9514 Additional info: - Mounting height is similar for combination standpipe

Which of the following is not a quarter-turn valve?

Correct answer: Needle Valves (similar to globe valves; for finer control of flow on smaller lines) Source: assuredautomation.com

The minimum size of a fire hose outlet of an interior wet standpipe.

Correct answer: 1 1/2" or 38 mm Source: RA 9514

The minimum size of a fire house outlet of dry standpipe

2 1/2" or 63.5 mm

All fire service connections shall be located on a street front not less than ______.

Correct answer: 46 cm Source: RA 9514

A nipple installed where fittings or valves are to be very close to each other

Correct answer: Close Nipple Source: Audel

A nipple installed where a large amount of unthreaded portion exists between the threads

Long Nipple

A nipple installed where a a small amount of unthreaded portion exists between the threads

Short/Shoulder Nipple

Standard for Installation of Sprinkler Systems

Correct answer: NFPA 13 Source: NFPA

Standard for Portable Fire Extinguishers

NFPA 10

Standard for the Installation of Standpipe and Hose Systems

NFPA 14

National Fire Alarm and Signaling Code

NFPA 72

A Positive Displacement Pump wherein the high-pressure seal reciprocates with the piston

Correct answer: Piston Pump Source: pumpsolutions.com.au

have a stationary, high-pressure seal that is attached to the cylinder housing of the pump

Plunger Pump

a simple kind of rotary pump that a pair of gears push the liquid

Gear Pump

Two screws turning against each other for pumping the liquid.

Screw Pump

A pipe installed in buildings not as part of the water supply or disposal system, but primarily for use as water conveyance in case of fire

Correct answer: Standpipe Source: PDE by Max Fajardo

always located near the stairs for use by firemen in case of fire.

Fire Hose

An integrated network of hydraulically designed piping system installed in a building, structure or area with outlets arranged in a systematic pattern which automatically discharges water when activated by heat or combustion products from a fire.

Sprinkler

Discharge pipes from pressure tanks shall extend _____ from and into the bottom of such tanks.

Correct answer: 5 cm Source: RA 9514

A Flow Meter that measures an induced voltage generated by the fluid as it flows through a pipe.

Correct answer: Electromagnetic Flow Meter Source: emerson.com

Most common water meters for residential and small commercial properties.

Positive Displacement

Determines the flow through a meter of known internal capacity. The speed of the flow can then be converted into a volume of flow to determine the usage.

Velocity Meter

sends the liquid through a rotor causing it to rotate at an angular velocity proportional to the fluid flow rate.

Turbine Flow Meter

The sum of static head and velocity head at a pump discharge

Correct answer: Total Discharge Head Source: ASPE

Total head at the pump discharge minus suction head or plus suction lift.

Total Head

The energy of a fluid at any particular point of a flow stream per weight of the fluid. Units of measurement are generally in feet (meters).

Head

Static head near the inlet of a pump relative to the pump centerline.

Suction Head

Maximum height of water closet according to BP 344

Correct answer: 0.45 m Source: BP 344

Maximum height of urinal lip according to BP 344

0.48 m

common water closet height

0.38 m

height of water closet for juvenile

0.33 m

This new concept in plumbing has almost completely eliminated the vent stack and other forms of ventilation, but still attained the desired functions and effectiveness.

Correct answer: Sovent System Source: PDE by Max Fajardo

a term used to describe soil or waste system where all pipings are of threaded pipe, tubing or other such rigid construction using recessed drainage fittings to correspond to the types of piping

Durham System

A pump has a 900 revolutions per minute. After the maintenance, the rate of revolution increased to 950. Calculate the new head pressure if the original head pressure is 100 ft.

Correct answer: 112 ft Head pressure increases as RPM increases.

Standard for the Fire Protection of Telecommunications Facilities

Correct answer: NFPA 76

Liquefied Petroleum Gas Code

NFPA 58

National Fire Alarm and Signaling Code

NFPA 72

Health Care Facilities Code

NFPA 99

A full-way valve used to regulate a fluid flow in which a threaded stem raises & lowers a wedge-shaped disk

Correct answer: Gate Valve Source: sciencedirect.com; various websites

In a municipality where a combination sewer system is used, how can you avoid an overflow from fixtures installed in the basement? A.)Increase the rise of the sewer pipe B.)Install properly-spaced backwater valves C.)Increase drain pipe size at least 2 times larger D.)Use deep-seal traps

Correct answer: Install properly-spaced backwater valves Additional info: - Backwater valves: a device installed in a drainage system to prevent reverse flow

a device installed in a drainage system to prevent reverse flow

Backwater valves

This material is not used in lavatories as water becomes black or brown. A.) zinc B.) lead C. ) iron D.) copper

Correct answer: iron

pipes are susceptible to corrosion and rust, while steel pipes are resistant and sustainable.

Iron pipes

What is a standard for Ductile-Iron and Gray-Iron Fittings A. AWWA C521 B. AWWA C110 C. AWWA E102 D. AWWA C200

Correct answer: AWWA C110 Source: awwa.org

What is a standard for Steel Water Pipe, 6 In. (150 mm) and Larger

AWWA C200

What is a standard for Plastic Ball Valves

AWWA C521

What is a standard for Submersible Vertical Turbine Pumps

AWWA E102

The number of cases of disease having their onset during a prescribed period of time A. Morbidity B. Prevalence C. Mortality D. Incidence

Correct answer: Incidence Source: cdc.gov

The number of cases of a disease, number of infected people, or number of people with some other attribute present during a particular interval of time.

Prevalence

Rate of disease or the presence of illness in a population

Morbidity

The number of deaths in a population due to a specific disease or cause

Mortality

Which of the following is true about storm water swale? A. They intercept and filter rainfall B. They pump runoff to avoid flooding C. They carry sewage to treatment plant D. They increase runoff speed to to remove pollutants

Correct answer: They intercept and filter rainfall Source: susdrain.org

are shallow, broad and vegetated channels designed to store and/or convey runoff and remove pollutants.

Swales

PD 1096 prescribes that dry standpipe is required for every building of how many floors?

4 storeys or more

Which of the following is not a part of a diaphragm pump? A. Vane B. Ball valve C. Flexible Diaphragm D. Suction Port

Correct answer: Vane Additional info: - Diaphragm pumps are positive displacement pumps. They do not have vanes, impellers, or rotor.

The tensile strength of A53 pipes should be a minimum of 48,000 psi for ________.

Correct answer: Grade A Source: matmatch.com

The tensile strength of A53 pipes should be a minimum of 48,000 psi for ________.

Type E and S (Grade A- 48,000 psi)

The tensile strength of A53 pipes should be a minimum of 60,000 psi for ________.

Type E and S (Grade B- 60,000 psi)

The tensile strength of A53 pipes should be a minimum of 45,000 psi for ________.

Type F- 45,000 psi

The minimum retention period or the time for which suspended matters in septic tank would settle and stabilize.

Correct answer: 24 hours Source: accessengineeringlibrary.com; cpheeo.gov.in

Which of the following fire pump types is most suitable for a system with a high suction lift requirement? A. Vertical turbine pump B. Vertical inline pump C. Horizontal split-case pump D. Positive displacement pump

Correct answer: Vertical turbine pump Source: NFPA 20, Standard for the Installation of Stationary Pumps for Fire Protection Additional info: - Vertical turbine pump is the only type of pump allowed by NFPA 20 that can start with negative suction pressure or take water under a lift condition such as from a below grade source such as a river or subgrade tank

A rocket or liquid propellant which consists of combinations of fuels and oxidizers which ignite spontaneously on contact with each other. A. Organic Peroxide B. Magnesium C. Fumigant D. Hypergolic Fuel

Correct answer: Hypergolic Fuel Source: RA 9514

Any substance which, by itself or in combination with any other substance, emits or liberates a gas, fume or vapor used for the destruction or control of insects, fungi, vermin, germs, rats, or other pests

Fumigant

highly flammable metal which burns to over 2,980 °C, used as a principal element of aluminum alloy for the manufacture of mobile phones, laptop computers, cameras, and other electronic components

Magnesium

A strong oxidizing organic compound which releases oxygen readily

Organic Peroxide

What happens when you connect pump in series? A. Different RPM B. Same Horsepower C. Same Pressure D. Same GPM

Correct answer: Same GPM Source: pumpworks.com Additional info: - Pumps in series has similar flow rates that can give higher head

Plastic piping or tubing, copper or copper alloy piping or tubing, and ducts penetrating framing members have to be protected. What is the minimum gauge of steel nail plates? A. Gauge 20 B. Gauge 14 C. Gauge 18 D. Gauge 16

Correct answer: Gauge 18 Source: Nevada Mechanical Code

Shield plate protection for when piping, other than cast-iron or galvanized steel, is installed through holes or notches in studs, joists, rafters

Gauge 16

In a gas water heater, the purpose of the small hole drilled in the dip tube near the top is _____. A. to break siphonic action B. to serve as inlet pipe C. to serve as a cleanout D. to serve as inspection hole

Correct answer: to break siphonic action Source: Audel

The maximum vertical depth of liquid that a trap will retain, measured between the crown weir and the top of the dip of the trap. A. seal B. trap seal C. trap D. depth of water seal

Correct answer: trap seal Source: RNPCP

the vertical distance between the dip and the crown weir of a trap. Also, the water in the trap between the dip and the crown weir .

seal

a fitting or device designed and constructed to provide, when properly vented, a liquid seal which prevents the backflow of foul air or methane gas without materially affecting the flow of sewage or wastewater through it

trap

The angle of gooseneck from water main is usually _____. A. 60 degrees B. 30 degrees C. 90 degrees D. 45 degrees

Correct answer: 45 degrees

A water closet that features an elevated cistern connected by a long pipe to the bowl.

Correct answer: high tank water closet

also known as two-piece water closet

close-coupled water closet

the tank is integrated into the bowl

one-piece water closet

the tank height is reduced compared to traditional models

low tank

This type of spring develop in areas where the downward flow of groundwater is prevented by an underlying impermeable layer of rock. A. Valley springs B. Artesian spring C. Stratum springs D. Solution channel spring

Correct answer: Stratum spring

due to the emergence of water table where the topography falls below its level

Valley spring

arise where water is confined in permeable rocks under artesian head beneath a cover of impervious layer

artesian spring

typically occur in limestone districts where groundwater has created caves and channels

solution channel spring

A type of nipple where a small amount of pipe exists between the threads. A. close nipple B. long nipple or extra-long nipple C. shoulder or short nipple D. coupling

Correct answer: shoulder nipple or short nipple

This nipple is just long enough to take the threads at each end.

Close nipple

a nipple with a large amount of bare pipe exists

Long nipple or extra-long nipple

used to connect two pipe runs

Coupling

A comprehensive term, including all constructions for collection, transportation, pumping, treatment and final disposition of sewage . A. Sewerage B. Sewer C. Drainage D. Disposal

Correct answer: Sewerage Source: RNPCP

a pipe or conduit for carrying sewage and wastewater

Sewer

Drainage system includes all the pipings within public or private premises which convey sewage or other liquid wastes to a legal point of disposal but does not include the mains of a public sewer system or a public sewage treatment or disposal plant.

Drainage

From collection, disposal of solids is needed through incineration, sanitary landfills, open dump, hog feeding, etc.

Disposal

This system uses one tank for all the treatment steps, rather than using different equipment for each step in the process.

Correct answer: SBR (Sequencing Batch Reactor)

influent enters an aeration tank, injecting it with oxygen. This extra oxygen allows microorganisms to multiply and grow so they can decompose the organic waste in the water.

Activated Sludge Process (ASP)

Rather than using aeration alone to facilitate a biological reaction, support materials, such as plastic media, get mixed into the tank.

Sequencing Batch Bioreactor (SBBR)

Influent enters an aeration tank, also called a reactor, full of thousands of little plastic pieces called carriers or media. These media maximize the surface area they provide for microorganisms to grow, and they are a similar density to water, so they mix well throughout the tank.

Moving Bed Biofilm Reactor

When was the publication date of the Revised Implementing Rules and Regulations of RA 9514?

Correct answer: September 16, 2019 Source: bfp.gov.ph

Approval and signature of the RIRR 2019 by DILG

August 7, 2019

The Revised Fire Code of the Philippines of 2008 (Old Fire Code) was signed by former President Gloria Macapagal Arroyo

December 19, 2008

Every passage to an attic water heater shall have a solid continuous flooring not less than ____ in width.

Correct answer: 24 inches Source: International Plumbing Code Additional info: Attics containing a water heater shall be provided with an opening and unobstructed passageway large enough to allow removal of the water heater.

Which of the following is a cause of inflow in sanitary sewer systems? A. root intrusion to sewer B. leaky joints C. deteriorated manhole D. illegally connected sump pump

Correct answer: illegally connected sump pump Source: metroconnects.org

refers to stormwater that enters the sewer system through leaky manhole covers, uncapped sewer cleanouts, or rain leaders, basement sump pumps or foundation drains that are illegally connected to sewer laterals or mains.

Inflow

refers to groundwater that seeps into sewer pipes through cracks, holes, leaky joints, and deteriorated or faulty connections.

infiltration

An instrument used to measure the amount of water vapor in air, in soil, or in confined spaces

Correct answer: hygrometer

an instrument used to determine the specific gravity

hydrometer

measures altitude, the distance of a point above sea level

altimeter

measures atmospheric pressure

barometer

This type of pump utilizes a pair of impellers arranged in a back-to-back configuration, and the water discharged from the impeller is directed into a spiral casing. A. Mixed Flow Pump B. Double Suction Pump C. Jet Pump D. Single Suction Pump

Correct answer: Double Suction Pump Source: jeepumps.com

use the discharge of a high velocity jet into a suction chamber to create a vacuum and educe a fluid into the chamber where it combines with the fluid from the jet.

Jet Pump

employs horizontal and axial suction and upward and radial discharge.

Single Suction Pump

type of centrifugal pumps with the addition of a mixed flow impeller. The fluid flow within these pumps undergoes both axial and radial pumping action.

Mixed Flow Pump

Where surface water in a perennial stream does not meet the water demand in dry weather, _____ can constitute a good source of water A. Cavity tube well B. Brackish waters C. Infiltration galleries D. Surface waters

Correct answer: Infiltration galleries Source: web.deu.edu.tr

The hot water supplied to bathtubs and whirlpool bathtubs shall be limited to a maximum temperature of _____. A. 140° F B. 110° F C. 160° F D. 120° F

Correct answer: 120° F Source: International Plumbing Code

backflow prevention limit for hot water

110° F or 43.3°C

maximum temperature set as limit stops for showers

120° F or 48.88°C

What is the diameter of a dry standpipe with 3-way siamese fire department connection A. 100 mm B. 200 mm C. 125 mm D. 150 mm

Correct answer: 125 mm Source: National Building Code

2-way siamese fire department connection

100 mm dry standpipe

4-way siamese fire department connection

150 mm dry standpipe

It is the separation of components from a mixture according to the relative volatility of the components. Low volatile components are separated from more volatile components. A. Filtration B. Distillation C. Condensation D. Evaporation

Correct answer: Distillation Source: Martine Esteban-Decloux; various sources

a part of distillation; the change from gas to liquid

Condensation

a part of distillation; the change from liquid to gas

Evaporation

the separation of components via a filtering medium

Filtration

The process of first raising the temperature to separate the more volatile from the less volatile parts and then cooling and condensing the resulting vapor so as to produce a nearly purified substance.

Distillation

When installing hubless cast iron pipe, what tool is commonly used? A. Ballpeen hammer B. End Pipe Wrench C. Allen Wrench D. Ratchet Spanner

Correct answer: Ratchet Spanner Additional info: - Best option is Torque Wrench. However, Torque Wrench isn't among the choices. - Ratchet Spanner- is used to tighten stainless steel bands, nuts and bolts

Which of the following is true about surface waters? A. Rivers are more reliable source of water compared to lakes because rivers are replenished by upstream sources. B. Lakes are more reliable source of water compared to river because less pollutants accumulate in lakes C. Lakes are more reliable sources of water compared to rivers because water stability dilutes the pollutants D. Rivers are more reliable source of water compared to streams because rivers are less likely to be polluted.

Correct answer: Rivers are more reliable source of water compared to lakes because rivers are replenished by upstream sources.

Static bodies of water

Lakes

smaller and narrower than a river

Stream

The following are causes of permanent hardness, except for one. A. Calcium sulfate B. Calcium Bicarbonate C. Magnesium chloride D. Magnesium Nitrate

Correct answer: Calcium Bicarbonate Additional info: - Calcium Bicarbonate causes temporary hardness, not permanent hardness

What is one of the advantages of pressure sewer systems? A. Lesser maintenance is required. B. They are fit for areas with high population density. C. They do not require power to operate. D. Manholes are no longer needed

Correct answer: Manholes are no longer needed. Source: US EPA

Which of the following factors would most significantly impact the suitability of treated wastewater for drip irrigation system? A. The pathogens in the wastewater B. The color of wastewater C. The chlorine content of tapwater D. The turbidity of wastewater

Correct answer: the pathogens in the wastewater Additional info: the presence of pathogens can cause diseases in humans and animals. They can also contaminate crops

The pipe that lets fresh water enter the water heater through the top of the tank. A. Flue B. Overflow Pipe C. Dip Tube D. Anti-Corrosion Anode Rods

Correct answer: Dip Tube

1 or 2 magnesium or aluminum anode rods inside to protect exposed steel from corrosion

Anti-Corrosion Anode Rods

brings exhaust gases from the water heater to the outdoors

Flue

allows water to escape when water expands and pressure builds up in the tank

Overflow pipe

Property of a fluid whereby its own molecules are united or attracted to each other. A. Cohesion B. Capillary Action C. Ideal Fluid D. Adhesion

Correct answer: Cohesion

the process of a liquid flowing in a narrow space without the assistance of, or even in opposition to, any external forces like gravity.

Capillary Action

The property of a water to stick to other objects

Adhesion

a fluid that is incompressible and no internal resistance to flow

Ideal Fluid

What is the suitable material for cutting cast iron? A. Soil Pipe Cutter B. Tubing cutter C. Ratchet Cutter D. Wide Roll Pipe Cutter

Correct answer: Soil Pipe Cutter Source: Ridgid Catalogue

What is the suitable material for cutting pvc, cpvc, pp, pex, pe, rubber hose?

Ratchet Cutter

for cleaner cuts

Wide Roll Pipe Cutter

What is the suitable material for cutting coppers, steels, plastic, and aluminum pipes

Tubing cutter

Chemical not found in drain cleaners A. Hydrogen sulfate B. Hydrochloric acid C. Hydrogen Peroxide D. Sodium hydroxide

Correct answer: Hydrogen Sulfate (used to create a variety of inorganic sulfides used to create pesticides, leather, dyes, and pharmaceuticals)

(a.k.a bleach)

Sodium hypochlorite

(a.k.a muriatic acid)

Hydrochloric acid

(corrosive cleaner for toilet)

Sodium hydroxide

What is the purpose of storm water separator? A. To increase water velocity B. To discharge water to river C. To treat water D. To store water

Correct answer: to treat water Additional info: - Stromwater separator physically filters out pollutants and debris

How is iron treated in wastewater? A. aeration B. coagulation C. filtration D. sedimentation

Correct answer: aeration

Suspended solids are removed from the water by gravity settling and deposition

Sedimentation

The process in which solid particles in a liquid or gaseous fluid are removed by the use of a filter medium that allows the fluid to pass through while retaining the solid particles

Filtration

Chemicals (alum) with a positive charge are added to the water; positive charge neutralizes the negative charge

Coagulation

In disinfecting potable water system, the system or part thereof shall be filled with water/chlorine solution containing not less than _____ of chlorine, and the system or part thereof shall be valved off and allowed to stand for 24 hours A. 500 ppm B. 50 mg/L C. 200 ppm D. 20 mg/L

Correct answer: 50 mg/L or 50 ppm Source: IPC 2018

Term for the rainwater drained from roof gutters and downspouts. A. Run-off B. Storm water C. Surface water D. Ground water

Correct answer: Storm water

that portion of rainfall or other precipitation which runs off over the surface of the ground.

Surface water

the water that stands in or passes through the ground

Ground water

It is used for measuring pore water pressures. It is also used to measure underground water pressure A. piezometer B. thermometer C. barometer D. manometer

Correct answer: Piezometer Source: sciencedirect.com; various websites

a measuring instrument which measures the pressure in a confined space of a fluid or gas

Manometer

a scientific instrument used to measure atmospheric pressure

Barometer

an instrument that measures temperature

Thermometer

In no case shall the clearance between the bottom of the fire extinguisher and the floor be less than _____. A. 300 mm B. 100 mm C. 150 mm D. 200 mm

Correct answer: 100 mm or 4" Source: RA 9514

FE(Fire Extinguishers) having a gross weight not exceeding 18 kg shall not be more than ___ m above the floor

1.5 m

FE (Fire Extinguisher) having a gross weight greater than 18 kg shall not be more than ___ m above the floor (except wheeled types)

1 m

Discharge pipes from pressure tanks shall extend _____ from and into the bottom of such tanks. A. 5 cm B. 2.5 cm C. 10 cm D. 4 cm

Correct answer: 5 cm Additional info: RA 9514

Which among the choices is classified as moderate hazard? A. The sum of class A combustibles and class B flammables are low B. The sum of class A combustibles and B flammables are higher than expected or anticipated under light (low) hazard occupancies C. The sum of class A combustibles is low D. The sum of Class A combustibles and Class B flammables are present in storage, over and above those expected under ordinary (moderate) hazard

Correct answer: The sum of class A combustibles and B flammables are higher than expected or anticipated under light (low) hazard occupancies

Locations where the total amount of Class A combustible materials, including furnishings, decorations and contents, is of minor quantity.

Light (Low) Hazard

Locations where the total amount of Class A combustibles and Class B flammables are present in greater amounts than expected under light (low) hazard occupancies.

Ordinary (Moderate) Hazard

Locations where the total amount of Class A combustibles and Class B flammables are present and rapidly developing fires with high rates of heat, in storage or production use

Extra (high) hazard

Which is not true about water quality guidelines? A. Fishery water has a higher ammonia effluent limit than protected waters. B. Strong wastewater has an initial BOD equal to or greater than 3,000 mg/L. C. Navigable waters has higher BOD limits than waters intended for recreation D. Temperature to be maintained in recreational water is 18°- 40° C.

Correct answer: Temperature to be maintained in recreational water is 18°- 40° C. Source: DENR DAO 2016-08

A well that doesn’t require a pump to bring water to the surface; this occurs when there is enough pressure in the aquifer. A. Drilled well B. Shallow well C. Deep well D. Artesian well

Correct answer: Artesian well

consists of a hole bored (a borehole) into the ground, with the upper part or the entire depth of the well being lined with casing

Drilled Well

The benefits of shallow wells is that they are less expensive due to lower labor and material costs. Your well pump for this setup is not submersible, which means it must be placed above ground in well housing.

Shallow well

These wells tap into a water table deep underground, as far down as 1000 feet. Deep wells have higher protections against potential surface contaminants.

Deep well

A 200 sqm roof area is situated in a city where the rainfall intensity is 127 mm/hr. What pipe diameter will you recommend for downspout? A. 102 mm B. 51 mm C. 127 mm D. 76 mm

D. 76 mm

Backwater valves are required _____. A. at free-flowing cold-water pipes in two-story buildings B. at every fixture location within a multistory building C. in locations where fixtures are arranged in rows D. in locations where fixtures are subject to backpressure

Correct answer: in locations where fixtures are subject to backpressure Additional info: - A backwater valve ensures floods and sewage does not come back up into your basement, causing flooding and damage to your home (absolutedp.com).

Which of the following is true about soil porosity? A. The soil with larger pores drains slower. B. Clay is more porous, but sand is more permeable. C. Gravel has low porosity and low permeability. D. Clay might have small pores due to fracturing.

Correct answer: Clay is more porous, but sand is more permeable Additional info: - Clay is the most porous sediment, but the least permeable.

An oxygen cylinder of volume 2 cu.ft has a pressure of 2000 psig and is at 21°C, determine the mass. A. 10.29 lbs B. 22.68 kg C. 10.29 kg D. 22.68 slugs

10.29 kg

For trap arms ___ in diameter and larger, the change of direction not exceeding 22 1/2 degrees, no cleanout is required. A. 76 mm B. 204 mm C. 32 mm D. 102 mm

Correct answer: 76 mm Source: RNPCP, Chapter 10

Which of the following is limited to operate, tend or maintain, or be in-charge of the operation, tending or maintenance of any mechanical works, projects, plant of up to 300 kW? A. CPM B. PME C. All of the choices D. ME

Correct answer: CPM (Certified Plant Mechanic) Source: RA 8495 Section 34

Over 2000 kW

PME (Professional Mechanical Engineer)

300 kW to 2000 kW

ME, PME

100 kW TO 300 kW

CPM, ME, PME

What is the height of the Dry Standpipe outlet above the floor of each storey? A. 91 cm to 182 cm B. 122 cm to 182 cm C. 46 cm to 122 cm D. 61 cm to 122 cm

Correct answer: 61 cm to 122 cm Source: RA 9514

What is the height of the Wet Standpipe outlet above the floor of each storey?

Wet Standpipe requires its outlets to be 91 cm to 182 cm above the floor

The horizontal transport of heat in the atmosphere. A. Convection B. Radiation C. Advection D. Conduction

Correct answer: Advection Source: cimss.ssec.wisc.edu

the process of transferring energy vertically

Convection

the process of heat transfer from molecule to molecule

Conduction

The Sun powers Earth's weather and climate with solar energy streaming through space as electromagnetic waves

Radiation

The liquid and solid material pumped from a septic tank, cesspool, or other primary treatment source. A. Greywater B. Sewage C. Septage D. Scum

Correct answer: Septage Source: EPA

the layer that floats in the upper portion of septic tank

Scum

the wastewater from sinks, bathtub, shower drains, laundry, lavatory

Greywater

the wastewater that contain fecal mater and/or urine

Blackwater

any wastewater containing animal or vegetable matter in suspension or solution and may include liquids containing chemicals in solution

Sewage

The DAO 2021-19 covers the updating of the Water Quality Guidelines and general Effluent Standards of 2016 for the following parameters, except _____. A. Nitrous Phosphate B. Phosphate C. Fecal Coliform D. Ammonia

Correct answer: Nitrous Phosphate Additional info: The DAO-2021-19 covers the updating of the following: - Ammonia - Boron - Copper and Dissolved Copper - Fecal Coliform - Phosphate and Phosphorus - Sulfate

They refer to waters with salinity levels not less than 30 parts per thousand, at least 95 percent of the time. A. Briny waters B. Hypersaline waters C. Marine waters D. Brackish waters

Correct answer: Marine waters Source: DAO 2016-08

salinity is around 30 - 300 parts per thousand

Hypersaline waters

salinity is around .5 - 30 parts per thousand

Brackish waters

salinity is around 50 parts per thousand

Briny waters

What is the coefficient of roughness of Galvanized Iron? A. 0.01 B. 0.009 C. 0.012 D. 0.016

Correct answer: 0.016

What is the coefficient of roughness of Plastic?

0.009

What is the coefficient of roughness of Glass?

0.01

What is the coefficient of roughness of Cast Iron or Ductile Iron?

0.012

What is the purpose of stormwater outfall? A. To treat rainwater for irrigation use B. To filter stormwater before entering a water body C. To discharge runoff to water body D. To collect surface run-off

Correct answer: To discharge runoff to water body Additional info: Outfall is a point where collected and concentrated surface and stormwater runoff is discharged from a pipe system or culvert

The recommended minimum shower head height from the floor for emergency showers. A. 2.1 m B. 1.9 m C. 2.0 m D. 2.2 m

Correct answer: 2.1 m Source: ANSI; Ccohs.ca ANSI also recommends the shower head be between 208.3 and 243.8 cm (82-96 inches) from the floor.

Which of the following is important regarding the potential energy of water from a reservoir? A. Velocity B. Volume C. Height D. Density

Correct answer: height

is a primary factor in calculating potential energy

Correct answer: height Additional info: - Height is a primary factor in calculating potential energy - Volume and density affects mass, but they are not a primary factor - Velocity not related to potential energy, but related to kinetic energy

Standard for PE Plastic Pipe A. ASTM F2389 B. ASTM D4976 C. ASTM D3035 D. ASTM D1785

Correct answer: ASTM D3035

ASTM of Pressure‐rated Polypropylene (PP) Piping Systems

ASTM F2389

ASTM of Polyethylene Plastics Molding and Extrusion Materials

ASTM D4976

ASTM of Poly(Vinyl Chloride) (PVC) Plastic Pipe, Schedules 40, 80, and 120

ASTM D1785

What is that receptacle installed at corner wall that collect rain water from a balcony? A. Scupper drain B. Roof Drain C. Beehive roof drain D. Downspout

Correct answer: Scupper drain

the vertical portion of a rainwater conductor

Downspout

provides ample drainage for small roof decks areas and intercepts debris

Beehive roof drain

The on-going installation of the plumbing system or any part thereof which has been installed prior to the effectivity of the Code. A. Roughing-in B. Existing Work C. As-built installation D. Trim-out

Correct answer: Existing Work Source: RNPCP, Chapter 2

the installation of all pipings and fitting parts of the plumbing system, which can be completed prior to the installation of fixtures and accessories.

Roughing-in

An as-built document of an existing structure, if available, can be provided to a contractor, to ensure an understanding of the final dimensions, etc. on a project.

As-built

last phase in new construction plumbing, where the plumber installs the beautiful fixtures for your home, such as sinks, showers, and the toilet

Trim-out

One of the oldest plumbing materials used by Egyptians, Greeks and roman builders. This is highly resistant to acid and suitable for underground installation. A. Lead Pipe B. Galvanized Wrought Iron Pipe C. Galvanized Steel Pipe D. Cast Iron Pipe

Correct answer: Lead Pipe Source: PDE by Max Fajardo

Most popular and generally specified material for drainage system

Cast Iron Pipe

Made out from mild steel, drawn through a die and welded, cast into 6.00 meters long

Galvanized Steel Pipe

More resistant to acid waste than steel pipe

Galvanized Wrought Iron Pipe

An industrial pump displaces 6.5 liters per stroke and operates at 80 strokes per minute. How long, in hours, will it take to transfer 2340 gallons of liquid? A. 0.28 hrs B. 0.34 hrs C. 0.25 hrs D. 0.37 hrs

0.28 hrs

All of the following are effective ways to reduce water hammer, except _____. A. installing air chambers B. reducing pipe diameter C. using flexible hose connection D. installing PRVs

Correct answer: reducing pipe diameter Additional info: - water hammer can result to pipe join damage, knocking sounds, and vibration

A water closet that does not have a flushing mechanism. A. Dry toilet B. Pail Flush C. Blowout D. Reverse trap

Correct answer: Dry Toilet Source: Compendium of Sanitation Systems and Technologies

Sample dry toilets are bucket toilet, latrine, composting toilet, etc.

Dry Toilet

requires manual pouring of water directly into the toilet bowl

Pail Flush

requires a high flow of water into the waste line to flush out potential clogs in the system

Blowout

flushes through a siphon action created in the trapway located at the rear of the bowl

Reverse trap

What is being submitted to the local government unit after the completion of construction? A. Schematic Plans B. Construction Plans C. As-built Plans D. Permit Plans

Correct answer: As-built Plans (Necessary for Occupancy Permit)

Which of the following aims to mimic the natural water treatment processes of wetlands? A. Soil aquarium B. Reverse osmosis C. Constructed wetlands D. Biological aerated filter

Correct answer: Constructed wetlands

uses a semi-permeable membrane (synthetic lining) to filter out unwanted molecules and large particles such as contaminants and sediments like chlorine, salt, and dirt from drinking water.

Reverse osmosis

wastewater treatment units that are capable of providing carbon oxidation, nitrification, and denitrification

Biological aerated filter

What can be seen in the x-axis of a pump curve? A. head B. impeller trim C. revolutions D. flow rate

Correct answer: flow rate Additional info: - y-axis: shows the head

Which of the following occupancies require wet standpipe? A. Hazardous storage and business and mercantile occupancies having a floor area exceeding 1,860 sqm per floor B. Educational, healthcare and detention and correctional, business and mercantile, industrial, and hotels and apartments occupancies 3 or more storeys in height C. Assembly occupancies with an occupant load exceeding 500 D. Basement or cellars equipped with approved, supervised sprinkler system

Hazardous storage and business and mercantile occupancies having a floor area exceeding 1,860 sqm per floor

The following gases are found in septic tank except for one. A. Sulfur Dioxide B. Hydrogen Sulfide C. Carbon Sulfide D. Methane

Correct answer: Carbon Sulfide Source: PDE by Max Fajardo Additional info: - Other gases found in septic tank: Methane, Carbon Dioxide, Carbon Monoxide, Hydrogen, Hydrogen Sulfide, Sulfur Dioxide

Copper has several alloys such as brass that are used as a plumbing material. What is the other principal element found in brass? A. Zinc B. Nickel C. Aluminum D. Tin

Correct answer: Zinc Source: PDE by Max Fajardo Additional info: Brass is an alloy made primarily of copper and zinc; Zinc- 15% and Copper- 85%

ASTM of PVC Sewer Pipe and Fittings A. ASTM D2239 B. ASTM D1785 C. ASTM F441 D. ASTM D2729

Correct answer: ASTM D2729

ASTM of Poly(Vinyl Chloride) (PVC) Plastic Pipe, Schedules 40, 80, and 120

ASTM D1785

ASTM of Polyethylene (PE) Plastic Pipe (SIDR-PR) Based on Controlled Inside Diameter

ASTM D2239

ASTM of Chlorinated Poly(Vinyl Chloride) (CPVC) Plastic Pipe, Schedules 40 and 80

ASTM F441

Refers to any material or mixture consisting of a fuel and oxidizer used to set off explosives. A. Combustible Fibers B. Explosive C. Blasting Agent D. Combustible Waste

Correct answer: Blasting Agent Source: RA 9514

Any readily ignitable and free-burning fibers

Combustible Fibers

Also known as loose waste material, are those generated by an establishment or process and, being salvageable, are retained for scrap or reprocessing on the premises where generated.

Combustible Waste

Includes any chemical compound or mechanical mixture that is commonly used or intended for the purpose of producing an explosion.

Explosive

In a constant water pressure system, what is the advantage of using a variable speed pump? A. VRF stores energy for later use B. VRF matches water demand C. VRF can operate without electricity D. VRF operates only during peak hours

Correct answer: It matches water demand Source: h20systems-fl.com; varying sources Additional info: - Constant pressure system prevents the water pressure from dropping when the demand changes from usual - Variable Speed Pump keeps up with varying flow and water demand

A tributary sewer is defined as _____. A. A sewer that receives flow from multiple sewers and connects to STP. B. A sewer that serves multiple lateral branches and terminates to a main sewer. C. The lowest horizontal piping of a drainage system inside a building. D. A public sewer that conveys both storm water and sanitary wastes.

Correct answer: A sewer that serves multiple lateral branches and terminates to a main sewer.

A sewer that receives flow from multiple sewers and connects to STP.

Intercepting or Trunk Line Sewer

The lowest horizontal piping of a drainage system inside a building.

Building Drain

A public sewer that conveys both storm water and sanitary wastes.

Combination Public Sewer

Which of the following is not a purification process? A. Filtration B. Aeration C. Evaporation D. Precipitation

Correct answer: Precipitation

the process in which solid particles in a liquid or gaseous fluid are removed by the use of a filter medium that permits the fluid to pass through but retains the solid particles.

Filtration

the process by which air is circulated through, mixed with or dissolved in a liquid or substance.

Aeration

when water evaporates, it leaves sodium and chloride ions behind

Evaporation

Which of the following extinguishers are not selected for protection of Class B hazard? A. AFFF B. Carbon Dioxide C. FFFP Foam D. Wet Chemical

Correct answer: Wet Chemical Source: RA 9514

Wet Chemical is for

Class A and Class F/K

a water-type fire extinguisher used to extinguish flammable liquid fires

(AFFF) Aqueous Film Forming Foam

Film-Forming Fluoroprotein Foam, highly effective firefighting foam for non-polar, flammable solvents.

FFFP Foam

works on fires involving live electrical equipment and flammable liquids

Carbon Dioxide

In disinfection, what can reduce the effectiveness of chlorine? A. low turbidity B. warm temperature C. presence of calcium D. high pH level

Correct answer: high pH level Sources: fluidra.com; hgtv.com; various sources Additional info: - high alkalinity in water reduces the effectiveness of chlorine

What is a standard for Valves, Flanges, Fittings, and Gaskets A. ANSI/ASSP A10 B. ANSI/ASME B16 C. ANSI/ASME B1 D. ANSI/ASME A13

Correct answer: ANSI/ASME B16

ANSI

American National Standards Institute

ASME

American Society of Mechanical Engineers

ASSP

American Society of Safety Professionals

ANSI/ASME B1

Unified Inch Screw Threads

ANSI/ASME A13

Identification of Piping Systems

ANSI/ASSP A10

Construction & Demolition Operations

Which of the following is not a fixture? A. Urinal B. Lavatory C. Water Closet D. Slop Sink

Correct answer: Water Closet Source: PDE by Max Fajardo - A tricky question since we all know that all the choices are receptors of waste and therefore, a fixture. However, the examiner must have based this question from PDE by Max Fajardo.

The stage where solids form larger clusters, or flocs to be removed from water. A. Coagulation B. Sedimentation C. Flocculation D. Disinfection

Correct answer: Flocculation

Chemicals (alum) with a positive charge are added to the water;

Coagulation

Suspended solids are removed from the water by gravity settling and deposition

Sedimentation

The addition of one or more chemical disinfectants to kill any remaining parasites, bacteria, or viruses.

Disinfection

Civil works drawing that shows all the major features and structures on a piece of property. It may display the utility blocks, process blocks, roads, and building blocks for a potential project. A. Schematic Piping Layout B. Site Plan C. Plot Plan D. Detailed Drawing

Correct answer: Plot Plan Source: west-chester.com; creastrealestate.com

scaled drawings that display the layout for an existing or proposed building or development. a detailed architectural drawing that exhibits the form, location and orientation of a building on a site

Site Plan

drawing that is showing a small part of a floor plan, elevation, or other drawings

Detailed Drawing

drawing of piping system without scale and exact location

Schematic piping layout

Fixture connections between drainage pipes and water closet shall be made with ____. A. hot poured compound B. flanges C. expansion joints D. unions

Correct answer: flanges Source: RNPCP

A septic tank's leaching chamber has an effective capacity of 5,600 liters. Find the approximate volume of the digestive chamber. A. 16,800 liters B. 13,600 liters C. 11,200 liters D. 2,800 liters

11,200 liters

A type of water closet that is noisy but highly efficient. Strong jet into up leg forces contents out. Use only with flush valve, requires higher pressure. A. Reverse Trap B. Siphon Jet C. Siphon Vortex D. Blowout

Correct answer: Blowout

This type of water closet is similar to that of the siphon-jet except that it has a smaller trap passageway and smaller water surface area, moderately noisy.

Reverse Trap

A water closet that is sanitary, efficient, and very quiet. Water enters through the rim and through the down leg

Siphon Jet

Water closet that is quiet, extremely sanitary, water is directed through the rim. It scours bowl, folds over into jet; siphon.

Siphon Vortex

In a plain sedimentation tank, ____ of BOD is removed. A. 5% - 10% B. 15% - 30% C. 30% - 40% D. 40% - 60%

Correct answer: 30% - 40% Source: Abdulhussain, Ihssan Additional info: - Plain sedimentation is mainly used to remove large suspended solids

What is the pipe diameter recommended for a soil branch that serves 1800 DFU? A. 203 mm B. 152 mm C. 254 mm D. 127 mm

203 mm

A substance that deforms continuously under the application of a shear force. It cannot sustain a shear force at rest. A. Water B. Effluent C. Fluid D. Air

Correct answer: Fluid Source: sciencedirect.com; vedantu.com

Which of the following formation is favorable for well construction and water quality? A. Layers of gravel and sand B. Thick clay layer above limestone C. Interbedded layers of clay and sand D. Layers of silt and sand

Correct answer: Layers of gravel and sand Additional info: - both materials provide high permeability and natural filtration

This system is provided with 64 mm (2 ½ in.) hose connections for full-scale firefighting. A. Class II System B. Class III System C. Class I System D. Class IV System

Correct answer: Class I System Source: RA 9514

a hose connection provided with 38 mm (1 ½ in.) hose or within thirty seven meters (37 m) of a hose connection system

Class II System

This type of apparatus are automatic and require no motor since they depend for operation upon water hammer that is surging back and forth in a pipe when suddenly brought to rest. A. suction tank B. force pump C. hydraulic ram D. centrifugal pump

Correct answer: hydraulic ram Source: Salvan Plumbing and Sanitary

used so that the pneumatic tank or other pumps sucks the water from this suction tank and not from the Public Main so that, it will not deprive the neighbor of water due to pressure.

Suction Tank

posses moving parts without valves, revolving around an axis and centrifugal action is utilized in delivering the water under pressure.

Centrifugal Pump

used to deliver water at a point higher than the position of the pump itself.

Force Pump

Which is true about the function of a jockey pump? A. it increases water flow during high demand such as fire emergencies B. it prevents frequent fire pump activation C. it serves as the back-up to the main fire pump as the system requires redundancy D. it regulates water temperature

Correct answer: it prevents frequent fire pump activation Additional info: - jockey pump is also known as pressure-maintenance pump

What is NFPA 101? A. Life Safety Code B. Fire Code C. Fire protection systems D. Building Safety Code

Correct answer: NFPA 101 Source: nfpa.org Additional info: - NFPA 1: Fire Code

Standard Specification for Cast Iron Soil Pipe and Fittings A. ASTM B43 B. ASTM A74 C. ASTM A123 D. ASTM A888

Correct answer: ASTM A74

Standard Specification for Hubless Cast Iron Soil Pipe and Fittings for Sanitary and Storm Drain, Waste, and Vent Piping Applications

ASTM A888

Standard Specification for Seamless Red Brass Pipe, Standard Sizes

ASTM B43

SPDI I,II,REFRESHER Flashcards

(485 cards)