Flow of water or other liquid mixture or substances into the distributing pipes of a potable supply of water from any source, other than its intended source.

Back siphonage is the backflow of used contaminated or polluted water from a plumbing fixture or vessel into a water supply pipe due to ___ in such a pipe

Battery of fixture refers to any group of two or more similar adjacent fixtures which discharges into a common ___ waste pipe or soil branch

Closes the end of a pipe so, there is no opening for the passage of water.

controlled outlet on a pipeline used to discharge water

Any part of a piping system other than the main, riser or stack.

It occurs when the downstream water pressure is greater than the water supply pressure.

A length of soil or waste stack corresponding in general to a story height, but- in no case less than eight (8) feet or 2.4 meters, within which the horizontal branches from one floor or story of a building are connected to the stack.

A vent pipe connecting one or more individual vents with a vent stack or stack vent.

a branch vent that serves two or more traps, and extends from the front of the last fixture connection of a horizontal branch to the vent stack

A drain from two or three fixtures connected to a single trap. A.k.a. dual vent

A vertical vent that is a continuation of the drain, to which the vent connects.

A fixture combining one sink and tray or a two or three compartment sink or tray in one vent

Any physical connection or arrangement of pipes between two otherwise separate building water-supply pipes or a system through which or by means of which water supply may flow from one system to the other, the direction of flow depending on the pressure differential between the two systems.

(Potable Water Supply + Non-potable Water Supply)

The extended portion of a pipe that is closed at one end to which no connections are made on the extended portion, thus permitting the stagnation of water or air therein.

The length along the center line of the pipe and the fittings

All piping within the public or private premises that conveys sewage, rainwater, or other liquid waste, to a legal point of disposal. It does not include public sewer system, public sewerage plant, or disposal plant.

A vent that does not carry water or water- borne wastes

The minimum cross sectional area at the point of water supply discharge, measured or expressed in terms of diameter of a circle.

Apply to those portions of plumbing system which have been installed and approved prior to the contemplated additions, collections, or corrections.

The drain from the trap of a fixture to the junction of the drain with any other drain pipe.

Choose the incorrect equivalent of

1 Fixture Unit

The level in a fixture at which water begins to overflow the top or rim of the fixture.

A metallic sleeve, called or otherwise, joined to an opening in a pipe, into which a plug is screwed that can be removed for the purpose of cleaning or examining the interior of the pipe.

A valve used for flushing a fixture by using water directly from the water supply pipes or in connection with a special flush tank.

A device which discharges a predetermined quantity of water to the fixture for flushing purposes activated by direct water pressure

The slope or fall of a line of pipe in reference to a horizontal plane usually expressed in percent.

A branch vent that performs its function for two (2) or more traps.

1. Horizontal pipe is a pipe or fitting which makes an angle of more than 45 degrees with the horizontal

2. Vertical pipe is a pipe installed in a vertical position or at angle of not more than 45 degree with the vertical

The highest portion of the inside of any pipe conduit that is not vertical is the invert.

1. Solid waste is the waste being discharged from water closet

2. Liquid waste is the waste being discharged from any fixture

LOCAL VENT is a pipe or shaft serving to convey ___ from a plumbing fixture or a room to the outer air

Same as circuit vent except that it loops back and connects with a stack vent instead of a vent stack

In plumbing, a secondary pipe line. In average, a common sewer to which no other common sewer is tributary, receives sewage only from building sewers.

The principal artery of a continuous piping system, to which branches may be connected.

An opening constructed in a sewer or any part of a plumbing system of sufficient size for a person to gain access there to.

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

The ___ of a building, institution,, factory or industrial establishment, includes the water-supply, liquids, substances and or ingredients distributing pipes; and those pipes removing them and such water, liquid, and other carried-wastes; the fixtures and fixture traps; the soil, waste, and vent pipes; the house drain, the foundation drain, and the house sewer; the storm-water drainage; drainage ejectors, all with their devices, appurtenances, and connections within or on a building, a factory, or an industry.

this vent's primary function is to provide circulation of air between drainage and vent system

the part of a vent line which connects directly with an individual trap underneath or behind the fixture and extends to the branch or main, soil, or waste pipe at any point higher than the fixture or fixture trap it serves

A water supply pipe that extends vertically one full story or more too convey water to branches or fixtures.

Rough-in is the installation of all pipes in the plumbing system that are in partitions and under floors. It includes the plumbing work done before the setting of the fixtures, or finishing.

The sewage containing human excrement and liquid household waste; also called domestic sewage.

A sewer intended to receive sanitary sewage with or without industrial wastes and without the admixture of surface water, storm water, or drainage.

A comprehensive term, including all construction for collection, transportation, pumping, treatment and final disposition of sewage.

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.

A watertight receptacle, which receives the discharge of a plumbing system or part thereof, and is designed and constructed so as to separate solids from the liquid digest the organic matter through a period of detention, and allow the effluent to discharge into a storm drain; or directly to the ground outside the tank through a system of open joint or perforated piping.

The pipe from the water main or source of water supply to the building served.

A vertical opening through a building for elevators, dumb-waiter, ventilation or similar purpose.

A wye connection used on fire lines so that two lines of hose may be connected to hydrant or to the same nozzle

A suction by the flow of liquids in pipes. A pressure less than atmospheric. Also known as "vacuum."

Any pipe which conveys the discharge of water closets, urinals, or fixtures having similar functions.

A vertical pipe usually used for the storage of water, frequently under pressure.

A general term used for any vertical line of soil, waste, or vent piping.

All is called the extension of a soil or waste stack above the highest horizontal drain connected to the stack EXCEPT

Portion of the rainfall or other precipitation, which runs off over the surface after the storm and for such a short period following a storm as the flow exceeds the normal runoff.

Underground drain pipes that receives only sub-surface or seepage water and convey it to place of disposal

A pit or receptacle at a low point to which the liquid wastes are drained.

Devices for holding and securing pipes and fixtures to walls, ceiling, floors, or structural members

Portion of a rainfall or other precipitation which runs off over the surface of the ground.

A fitting or device so constructed as to prevent the passage of air, gas, and some vermin through a pipe without materially affecting the flow of sewage or waste water through it.

A vertical pipe installed primarily for the purpose of providing circulation of air to different parts of drainage system.

A pipe or opening used to ensuring the circulation of air in plumbing system and for reducing the pressure exerted on trap seals.

Portion of a vent pipe through which liquid waste flow

A pipe, which conveys only liquid waste, free of fecal matter.

A pipe that conveys water from water services pipe to the plumbing fixtures and other water outlets.

The water supply of a building or premises consists of the water service pipe, the water distributing pipes, and the necessary connecting pipes, fitting, control valves, all appurtenance in or adjacent to the building or premises.

A type of Cast Iron Pipe generally used for building installations

A type of Cast Iron Pipe classified as extra duty pipe used for underground installations

Copper pipes are classified depending upon its wall thickness. Which among these is the heaviest type and suitable for underground installations?

Copper pipes are classified depending upon its wall thickness. Which among these statements is/are true about the L type:

I. Lightest copper type

II. Available in rigid and flexible form

III. For residential water supply lines

IV, For radiant heating installation

Copper pipes are classified depending upon its wall thickness. Which among these statements is/are true about the M type:

I. Lightest copper type

II. Available in rigid and flexible form

III. For residential water supply lines

IV, For radiant heating installation

In installing hot water line, a larger pipe should be avoided as it creates smaller heat loss.

World's first ever manmade plastic

The commercial length of the cast iron pipe is

One of the four varieties of the cast iron pipe that is used for the well-fited hub and spigot connections.

One of the four varieties of the cast iron pipe that is recommended when the length of a pipe needed is more than 150 cm long wherein cutting is not necessary

One of the four varieties of the cast iron pipe that is preferred when a piece of pipe needed is shorter than 150 cm long. Also, when the pipe is cut, both ends has hubs to serve as joint connector.

One of the four varieties of the cast iron pipe that is used in lieu of the single hub to do away of the caulking joints. It is also cheaper and easily connected using a neoprene rubber sleeves.

One of the four varieties of the cast iron pipe that is used in lieu of the single hub to do away of the caulking joints. It is also cheaper and easily connected using a neoprene rubber sleeves.

The manner of planning the layout and rerouting of the pipes to reach the point of service.

Which is false about cutting and threading operations of steel pipes:

I. cutting is done by using a 15-teeth per inch hacksaw blade

II. cutting applies backward strokes at the rate of one stroke per second

III. slow cutting will overheat and break the blade

Which among the underlined words makes the statement false:

In the absence of a measuring caliper, the inside diameter of a pipe can be known by measuring the outside circumference of the pipe with a string.

one roll of teflon tape is equivalent to ___ meter long

one roll of teflon tape is equivalent to ___ meter long

Simplest way of joining plastic pipe by cementing. This only takes 1/4 of the time it takes to assemble bell and spigot joints.

Which underlined word makes the statement false:

It is sometimes necessary to offset a run of pipe around a light fixture, a post or other obstruction. An offset can be made using 90° or 45° elbows. The 45° is better because there is less friction, and therefore more pressure drop when 45° fittings are used.

The daily average volume of human waste or excreta per capita is about:

Which among these are not one of the four types of the sewage disposal system:

A hole in the ground curbed with stones, bricks, concrete hollow blocks, or other materials laid in such a manner as to allow raw contaminated sewage to leach into the soil. The organic wastes accumulates and finally disposed of by the disintegration process.

A hole in the ground curbed with stones, bricks, concrete hollow blocks, or other materials laid in such a manner as to allow raw contaminated sewage to leach into the soil. The organic wastes accumulates and finally disposed of by the disintegration process.

A concrete sealed vault with a wooden shelter constructed for the collection of raw sewage.

A device or receptacle used to expedite the decomposition if the elements contained in a sewage waste. Raw sewage waste consists of water, and settleable solids called organic materials that can be precipitated inside it in a very short time.

A public sewage system, operated and maintained by the government consisting of a sewage treatment plant that conveys the raw sewage from buildings and houses to a disposal system.

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

A public sewer facility that carries regular sanitary waste only. It terminates in a modern sewage dispersal plant. Rainwater is not permitted to enter into this type of public sewer.

A sanitary sewer that conveys sanitary waste to a dispersal plant. Also known as Trunk Line sewer

A sanitary sewer that is classified as an intercepting sewer branch. Also known as contributing sewer.

A public sewer line that carries storm water that terminates in a natural drain such as canals, lakes, or rivers.

The minimum depth of laid underground pipes in the intercepting sewer.

Which of these underlined words makes the statement false:

The pipes of the tributary sewer is made of either vitrified clay or concrete pipe laid in an open trench. It is generally smaller in diameter than the intercepting sewer and installed not more than 3 meters above the street grade and terminate into the intercepting sewer.

A device of the main and storm sewer that serve as a man's access for inspection, cleaning, and repair.

Manhole is constructed out of bricks, stone, adobe, or concrete at an interval distance of:

The manhole diameter varies from:

The pump that will discharge waste in the sump and transfer it to the house drain installed overhead.

Sewage ejector is necessary when the public sewer line was installed at a depth from ___ below the street level.

The main function of a septic tank is to solidify and precipitate solid waste purifying odorous materials

The sewage that was discharged into the tank is remained and during its retention period, about 60% to 70% of the suspended solids are removed through sedimentation. It then forms a semi-liquid substance called ___

What type of bacteria processes the sludge and scum in the septic tank that transforms them into liquid and gases.

A sewage that turn dark and smell unpleasantly due to anaerobic decomposition

The lighter organic materials that rises to the surface of the water.

Decomposition caused by anaerobic bacteria that is accompanied by bad odors

Which among these is not of the gases produced inside the septic tank

a. methane (CH4)

b. carbon dioxide (CO2)

c. carbon monoxide (CO)

d. Hydrogen gas (H2)

e. hydrogen sulfide (H2S)

f. sulfur dioxide (SO2)

g. hydrogen peroxide (H2O2)

The reason why septic tanks are in rectangular form to retard the even flow of the waste, that is necessary to avoid disturbing the decomposition processes inside the tank.

The minimum inside dimensions of a septic tanks are

A type of bacteria found in the septic tank that split and digest the effluent. They can also survive only in the subsoil not more than 150 cm below the surface.

Rainwater should be conveyed in the ___

the location of the septic tank should be closer to the building it will serve that provides a minimum distance of ___ meter/s from outside the wall and at least ___ meter/s away from any source of water supply

Waste pipe is ___ in size than the small pipe because of the kind of waste it receives from the various plumbing fixtures.

Which among these is not one of the three major components of drainage installation of a plumbing system

Installation that receives and conveys discharges from water closet with or without waste coming from other fixtures.

Any pipe in the drainage installation that receives the discharges of any fixture except water closet and conveys the same to the soil branch, soil pipe, or house drain.

Plumbing system functions as air passage or conduits to ventilate the drainage and waste pipe installations.

Plumbing system functions as air passage or conduits to ventilate the drainage and waste pipe installations.

When a waste pipe is not directly connected to a soil stack or house drain

Choose the two most possible causes where pipe installations fail or break too soon.

Choose the false statement/s:

I. Use short radius fittings on vertical to horizontal or horizontal to horizontal changes

II. Use long sweep fittings on horizontal changes

III. For vertical to horizontal direction of changes, the most appropriate are wye and 45° fittings

IV. The T fitting was designed for horizontal run with lateral branches only.

The diameter size of the cleanout is equal to the diameter of the ___ pipe where it is connected. This is to avoid interference in the cleaning process.

The ideal position of horizontal waste pipe were those installed at 2% slope, Meaning, the pipe was installed with an inclined ratio of ___

Loss or escape of standing water inside the P-trap caused by siphonage by rapid flow of waste inside the pipe.

Trap Seal Loss occurs when the grade or slope of the pipe is increased from 2% to ___

If the pipe is 100 mm diameter, the water flow inside the pipe to attain scouring must have a depth of ___

Too ___ pipeline is subject to overloading of flow

Choose the incorrect equivalent of

1 Fixture Unit

Waste pipe is classified into two types depending upon the kind of fixtures it will serve. What type of waste pipe is one with terminal directly connected to the plumbing system.

Waste pipe is classified into two types depending upon the kind of fixtures it will serve. What type of waste pipe is the connection with terminal not directly connected to the plumbing system