Plumbing and Sanitary Systems (SART)

In a typical two-chambered septic tank (digestive and leaching chamber), what is the minimum depth of liquid should be provided in these chambers?

0.60 m

In a typical catch basin, what is the standard number of chamber/s that should be provided in every unit?

1 (one)

Pipes used in the plumbing industry are provided by manufacturers. The manufacturing of pipes is based on standards set by authorities and trade consultant. What sizes is not commercially available, hence, pipes of this size are commonly substituted with a larger one?

1 3/4 in

Which of the following terms denote gooseneck? a. 1/2 S-trap b. Bag trap c. Full S-trap d. Drum trap

a

Which type of sewage disposal system is considered most insanitary?

cesspool

Why should an air gap be provided in lavatory or sink? a. to prevent backflow b. to avoid contaminating water supply c. to eliminate cross-connection d. all of these

d

What is the code prescribed slope of horizontal sanitary drainage pipes? Such slope requirement is critical as it will smooth flow of liquid inside the pipe.

1/4 in per ft (2 percent)

A kind of bend which form an angle of 60 degrees; used to change direction in sanitary drainage system.

1/6 bend (SH)

What is the required nominal pipe size lavatory fixture supply pipe?

10 mm

What is the recommended minimum size of water service pipe of a domestic (house) structure?

19 mm

Using the rule of thumb in the design of a septic tank with a digestive chamber capacity of 4 cubic meters, what should be the liquid capacity of the leaching chamber?

2 cu mtrs

To provide ample amount of water to residences or any other establishment, water of sufficient pressure must be provided by water utility company. What is the recommended pressure range should utility company provide in order to meet such requirement?

30-45 psi

What is the minimum drain pipe size of a lavatory?

32 mm diameter

In water supply system, what is the average daily consumption per capita of water in residential or family dwelling unit? This value is used as a basis for estimating water demand to obtain the capacity of tank and its dimension.

50-75 per gals per capita per day

Recent development in water closet design resulted in the design of water saver type toilets, what is the acceptable average consumption (flushing) of a water saver toilet?

6 liters per flush (lpf)

An engineered material created through a patented procedure that bonds glossy porcelain-enameled metal to a structural composite through an injection moulding process, used particularly in manufacturing bathtubs. What is this patented material used in the market today?

Americast

Is used to protect potable water supplies from contamination or pollution due to backflow. In water supply systems, water is normally maintained at a significant pressure to enable water to flow from the tap, shower, or other fixture.

Backflow prevention device

Is a backflow prevention device used to prevent outbound water through a dwelling's drain pipes from re-entering -- "back flowing"—into a home. The valve contains a flap that allows water to exit the home, but closes to prevent the back flow into the home.

Backwater valve

What type of joint is used to connect sections of bell and spigot type of cast iron pipe?

Caulked joint

It is a kind of valve used in water supply system that prevents reverse flow of water inside it; a kind of backflow preventer. What is it?

Check valve

Is a vent that serves multiple fixtures on a horizontal branch, in a single story dwelling. Must always be paired with a relief vent located downstream of the last circuit vented fixture.

Circuit vent

What special kind of valve is installed directly at the water main and connected to the water service pipe? This valve is usually a plug type valve and can be operated by means of a shaft that engages the knob on the valve.

Corporation stop

In the abbreviation PEx, what does x stand for?

Cross linked

In waste disposal system, one of the concerns of sanitary engineers and public health officials is the spread of disease caused by bacteria found in sewage. What type of bacteria are present in feces excreted by man and animals?

Escherichia coli (e. coli)

What kind of plastic fitting can be used to connect galvanized iron pipe to a plastic pipe directly without the used of a coupling?

Female adaptor

What kind of joint which utilizes heat as means of bonding monolithically plastic pipes and fittings of homogeneous composiiton?

Heat fusion joint

A relatively new kind of piping material used in hot or cold water supply system installation; it is colored milky white and can be joined by heat fusion proces. What is this kind of pipe?

PPRC (Polypropylene random co-polymer) pipe

What material has that property that allows the smooth flow of wastewater due to its low flow resistance.

Plastic pipe

A standard piping material used by the water utility company to connect the water service pipe of any establishment to the water main. What is this plastic piping material?

Polyethylene (PE)

In water treatment method, the process of removing some suspended matter from water by simply allowing time and inactivity to settle heavier suspended material. What is it?

Sedimentation

When designing sanitary drainage system, what material specification should be specified when using polyvinyl chloride (PVC) pipe?

Series 1000

A type of water closet flushing design system characterized by its whirlpool-like flushing action of water typically from a low-slung tank; tank has all-water surface inside the bowl and has a virtually silent flushing action; Model is expensive.

Siphon vortex

Describe families of synthetic rubber. Used in gasketed-plate heat exchangers. It is used at moderate temperature up to 85 deg C. These materials have good abrasion resistance and good aging stability when protected by additives

Styrene-butadiene or styrene-butadiene rubber (SBR)

Which type of pump is commonly used to convey or remove storm or underground water from a pit? The unit is submerged under water with the discharge connected above it and into the drain located at the street level.

Submersible pump

Teflon, a white, soft, waxy and non-adhesive polymer is used as a *leak prevention* material for pipes particularly galvanized iron plates. It is placed between the threaded pipe end and fitting. What is the chemical name of Teflon?

Tetrafluoroethylene

In a typical grease trap, what should be the correct arrangement of its inlet and outlet in its elevation?

The outlet should be higher than the inlet

Th following are examples of draining fittings except __________________. a. street line b. 90 degress bend c. sanitary tee d. crowfoot

a

Which among the following classes of galvanized pipes has the thickest wall seciton? a. schedule 80 b. schedule 60 c. schedule 40 d. schedule 10

a

Which in the list is a term NOT apply used in sanitary drainage system? a. riser b. waste stack c. scum and sludge d. influent/effluent

a

Which of the following fixture combination can be technically considered a battery of fixtures? a. 4 urinals b. 2 water closets, 1 lavatory, 1 shower head c. 1 shower d. 1 water closet, 1 shower, and 1 urinal

a

Which of the following would logically have the least pipe size? a. fixture drain b. house drain c. stack d. horizontal branch

a

Which type of water distribution system relies on air pressure as a means of bringing water vertically upward through risers and horizontally through branches; a pressure tank is provided and a water pump is installed directly on top of the pressure tank? a. downfeed system b. hydropneumatic system c. upfeed system d. direct pressure system

a

A standard contraption provided by manufacturers in a faucet is the installation of a sieve-like material at the office or outlet of a faucet. This device provides smoother flow of water. What is this faucet contraption?

aerator

When designing a septic tank, which of the following practices is NOT acceptable in so far as standard trade practice and code requirement is concerned? a. vents not necessary b. inlet pipe connected at the leaching chamber c. no airspace between underside of slab and scum like d. all of these

all of these

Which type of valve is used on the water supply (shut-off) portion of a lavatory? a. ball valve b. gate valve c. angle valve d. butterfly valve

angle valve

A water system is generally and appropriately installed ____________________________.

at the street side underneath pavement

Which of the following is NOT a specified feature of a water closet used or installed in public toilets? a. elongated type bowl b. tank type water closet only c. with open-front seat d. constructed of non-absorbent material

b

Vent pipe should be installed in plumbing system in order to prevent ___________________.

back pressure

A term in plumbing denoting pressure within the sanitary drainage or vent piping system that is greater than atmospheric pressure (>14.7 psi); such condition can result to backflow.

backpressure

A valve in which the flow of liquid is controlled by a rotating drilled ball that fits tightly against a resilient (flexible) seat in the valve body.

ball valve

A term in plumbing which refers to any group of two or more similar adjacent fixtures which discharge into a common horizontal waste or soil branch.

battery of fixtures

A word that is synonymous with hub; it is the enlarged position of a pipe into which another pipe of the same or different size is inserted into.

bell

A vertical length of soil or waste stack at least eight feet in height (a story height), within which the horizontal branches from one storey or floor of the building or structure are connected to the stack.

branch interval

That part of the drainage system that extends from the end of the building drain and conveys its discharge to the public sewer, private sewer, individual sewage disposal system, or other appropriate point of disposal.

building sewer

Plumbing fixtures are rated according to the amount of waste water it can discharge per unit time. What term is it referred to? a. plumbing unit b. flow rate c. fixture unit d. flow pressure

c

Roughing-in includes the following items or components EXCEPT ___________________. a. installation of valves b. installation of pipes c. setting of fixtures d. provision of hangers and supports

c

Water hammering usually occurs in high pressure water system due to pressure variation thereby causing that banging sound. Which device is to prevent water hammering? a. check valve b. pressure relief valve c. air gap chamber d. backwater preventor assembly

c

Which in the list is NOT a type of rigid plastic pipe? a. Polyvinyl chloride b. Styrene rubber c. Polybutylene d. Chlorinated polyvinyl chloride

c

A cleanout is a fitting with a removable plate or plug placed along the drainage line in order to allow access to its interior for cleaning and de-clogging. Which type of a cleanout is recommended for open-ceiling areas such as basement parking? a. floor cleanout b. wall cleanout c. ceiling cleanout d. roof cleanout

ceiling cleanout

A type of water pump commonly used in houses and buildings for transporting water from lower to higher elevation; it contains an impeller mounted on a rotating shaft. The rotation of impeller increases the water velocity while forcing water into a casing, thus converting water velocity into higher pressure and forcing water out of the impeller as discharge.

centrifugal pump

A term which refers to a means of access to the interior of sanitary or waste lines for the purpose of de-clogging, cleaning or inspection; also referred to as access eye or cleaning eye. What it is?

cleanout

Upon initial inspection of plumbing system, what characteristic easily distinguishes a uPVC (unplasticized polyvinyl chloride) sanitary pipe from a CPVC (chlorinated polyvinyl chloride) water supply pipe?

color

A stack is appropriately applicable to a vertical line of _________________. a. vent b. waste c. soil d. all of these

d

What design provision should be critically considered in the design and construction of a septic tank? a. manhole b. inlet and outlet c. airspace d. all of these

d

Which of the following condition/s can cause or result to backlow? a. backpressure b. difference in elevation c. cross conneciton d. all of these

d

Which of the following is a purpose in proving ventilation pipes in drainage system? a. prevent retardation of low b. eliminate occurrence of positive and negative pressure inside pipes c. reduce deterioration of material due to exposure to sewage d. all of these

d

Which of the following items is considered a fixture? a. floor drain b. bidet c. water closet d. all of these

d

Which of the following parameters or factors can be used to size drainage pipes? a. fixture unit valve b. length of pipe c. number and type of fixtures d. all of these

d

Which of the following water treatment methods is used to remove or reduce number of biological contaminants such as bateria (e.coli, listeria, etc.) a. reverse osmosis b. filtration c. desalination d. chlorination

d

The abbreviation DWV stands for _________________________; a common term used in plumbing.

drainage, waste and valve

A receptacle attached to a plumbing system other than a trap in which water or wastes may be collected or obtained for ultimate discharge into the plumbing system.

fixture

*Arrange size of sanitary drainage pipes from smallest to largest*. This system of pipe arrangement is observed as method of establishing which pipe should be the smallest and the largest relative to flow of sewage.

fixture drain, horizontal branch, stack, and house drain

In a typical bathroom group, the term used to refer to a bathroom containing a water closet, a lavatory and a bathtub.

full bath

When servicing the water supply system of a group of fixtures it is necessary that a valve had been installed before so that this valve can be turned off thereby isolating this portion of the system from the rest without affecting the entire system. What kind of valve is usually used as an isolation valve?

gate valve

A valve in which the flow of water is cut off by means of a circular disk that fits againts the valve seat. The plan of movement of the disk is parallel to the normal direction of flow of water, which is turned through a tortuous passage to direct the flow normal to the face of the disk.

globe valve

A kind of return bend of small-size faucet, one end of which is about one foot long and the other end is about three inches, commonly used as a faucet for pantry sink and drinking fountain; also the lead connection between the water service pipe and water main and also a word synonymous P-trap.

gooseneck

Waster water is discharged or removed from fixtures such as lavatory, mop sinks, kitchen sink, floor drain. etc.

grey water

In a cast iron or plastic sanitation drainage pipe, which part of such pipe receive the end of another pipe?

hub or bell

A *pop-up waste* is a device or mechanism that can be operated in order to prevent water from being drained when using the fixture. In what type of plumbing fixture can a pop-up waste be installed?

lavatory

One of the newest design features of a water closet of a popular water closet company is the introduction of an anti-bacterial design particularly in their toilet seat. It is a kind of material that prevents the growth of bacterial such as e. coli., salmonela, listeria and other odor or stain-causing microorganisms. What is this patented material that is integrated into the molecular structure of the toilet component?

microban

When designing and specifying sanitary pipes particularly plastic pipes, how are these pipes measure?

nominal inside diameter

In medium to high rise buildings, a continuous recess on the wall or opening on the floor through which vertical pipes and stacks pass to different floors of a building. What do you call this opening?

pipe chase

It is considered the art and science of installing in building pipes, fittings, fixture, and other appurtenances for bringing in water supply and removing wastes or wasterborne wastes. What is it?

plumbing

The art and science of installing in building pipes, fittings, valves, fixtures and other apparatus for bringing in water into the building and removing waste, soil, storm water and waterborne wastes.

plumbing

A kind of sewage disposal system which is an outhouse or structure used for the deposition of excrement; such structure usually has a vault underneath in order to collect waste matter directly from the uses. This type of sewage disposal system is considered insanitary.

privy

Indirect waste pipe system is generally applied in what type of fixture?

refrigerator waste

A water treatment process where some suspended matter from water is removed by simple allowing time and inactivity thereby causing heavier suspended particles to settle at the bottom of vessel or tank. What is this water treatment process?

sedimentation

In sanitary system engineering, what general term is used to refer to the liquid or semi-solid sewage that contain organic and biological materials or substance in a septic tank?

septage

What piping schedule of plastic pipe is usually used for downspouts?

series 600

A vertical pipe that collects sewage from fixtures such as water closet, urinal, wash basin, floor drain, etc. via horizontal branches.

soil and waste stack

A general term in plumbing used to refer to any vertical line of soil, waste or vent piping hence, such pipe may contain liquid, solid or air.

stack

A globe is a kind of valve in which the flow of water is cut off by means of a circular disk that fit against the valve seat. What is the appropriate position or direction of liquid flow inside the valve?

to the right

In a trap, it is the vertical distance between the top dip and the crown weir; it also provides water seal and prevents sewer gases from entering the house of building. What is it?

trap seal

Which of the following type of ventilation is used to provide air circulation for two traps placed back-to-back or side-by-side such as lavatories or urinals? a. individual vent b. circuit vent c. unit vent d. looped vent

unit vent/common vent

A yoke is a type of ventilation used as an interconnection between what sections or portions of plumbing system?

vent stack and soil stack

The size of downspout can be calculated using the following parameters EXCEPT _______________________.

wall thickness of pipe

A water supply pipe, 200 mm diameter or larger and embedded underground at street side, provided by water utility company where local individual connections are done. Tapping at this junction is within the jurisdiction of the utility company hence, application for connection should be coursed through such agency.

water main

A check valve is a kind of backflow prevention device used in what system of plumbing?

water supply system

A type of plumbing ventilation system characterized as having a pipe connecting upward from a soil or waste stack below the floor and below the horizontal connection to an adjacent vent stack at a point above the floor and higher than the highest spill level of fixtures for preventing pressure changes in the stack.

yoke vent

What type of ventilation system is used to provide air circulation and prevents backpressure or siphonage within the drainage system? It is characterized as having pipes and fittings (usually a wye branch, 1/8 bend and inverted wye) connected between the soil or waste stack and vent stack at every five branch intervals.

yoke vent