Plumbing and Sanitary Flashcards
(150 cards)
1
Q
Teflon, a white soft, waxy and non-adhesive polymer I used as a leak prevention material for pipes particularly galvanized iron pipes. It is placed between the threaded pipe end and fitting. What is the chemical name of Teflon?
Trifluoroethane
Polyethylene
Tetrafluoroethylene
Pentafluorocarbon
A
Tetrafluoroethylene
2
Q
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?
Xpelor
Dacron
Lucite
Americast
A
Americast
3
Q
In a typical grease trap, what should be the correct arrangement of its inlet and outlet in its elevation?
The inlet should be higher than the outlet
The outlet should be higher than the inlet
Both inlet and outlet should be at the same elevation specifically at the upper section of the trap
Any elevation will do
A
The outlet should be higher than the inlet
4
Q
A standard piping material used by the local water utility company to connect the water service pipe of any establishment to the water main. What is this plastic piping material?
A
Polyehtylene
5
Q
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?
Vents not necessary
Inlet pipe connected at the leaching chamber
No airspace between underside of slab and scum line
All of these
A
All of these
6
Q
What material has that property that allows the smooth flow of wastewater due to its low flow resistance?
A
Plastic pipe
7
Q
What kind of joint which utilizes heat as means of bonding monolithically plastic pipes and fittings of homogeneous composition?
A
Heat fusion joint
8
Q
In a 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 bacteria are present in feces excreted by man and animals?
A
Esscherichia coli
9
Q
Which type of pump is commonly used to convey or remove storm or underground water from a pit? The unit is submerged under the water with the discharged connected above it and into the drain located at the street level.
A
Submersible pump
10
Q
What kind of plastic fitting can be used to connect galvanized iron pipe to a plastic pipe directly without the use of a coupling?
A
Female adaptor
11
Q
Using the rule of thumb in the design of a septic tank with the digestive chamber capacity of 4 cubic meters, what should be the liquid capacity of the leaching chamber?
A
2 cu.m.
12
Q
When designing sanitary drainage system, what material specification should be specified when using polyvinyl chloride pipe?
A
Series 1000
13
Q
In the abbreviation PEx, what does x stands for?
A
Cross linked
14
Q
Pipes used in the plumbing industry are provided by manufacturers. The manufacturing of pipes is based on standards set by authorities and trade consultants. Which of the following sizes is not commercially available, hence, pipes of this size are commonly substituted with a larger one?
A
1 3/4 in.
15
Q
Which among the following classes of galvanized pipes has the thickest wall section?
A
Schedule 80
16
Q
Which of the following fixture combination can be technically considered a battery of fixtures?
A
4 urinals
17
Q
Which of the following condition/s can cause of result to backflow?
Backpressure
Difference in elevation
Cross connection
All of these
A
All of these
18
Q
Which of the following items is considered a fixture?
Floor drain
Bidet
Water closet
All of these
A
All of these
19
Q
A check valve is a kind of backflow prevention device used in what system of plumbing?
A
Water supply system
20
Q
Which type of valve is used on the water supply (shut off) portion of a lavatory?
A
Angle valve
21
Q
What type of joint is used to connect sections of bell and spigot type of cast iron pipe?
A
Caulked joint
22
Q
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 cleanout is recommended for open-ceiling areas such as basement parking?
A
Ceiling cleanout
23
Q
The following are examples of drainage fittings except:
A
Street tee
24
Q
Which of the following parameters or factors can be used to size drainage pipes?
fixture unit valve
length of pipe
number and type of fixtures
all of these
A
All of these
25
Which of the following is a purpose in providing ventilation pipes in drainage system?
Prevent retardation of flow
Eliminate occurrence of positive and negative pressure inside pipes
Reduce deterioration of material due to exposure to sewage
All of these
All of these
26
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
27
A pop-up waste is a device or a 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
28
A standard contraption provided by manufacturers in a faucet is the installation of a sieve-like material at the orifice or outlet of a faucet. This device provides smoother flow of water. What is this faucet contraption?
Aerator
29
Which of the following features is not a specified feature of a water closet used or installed in public toilets?
Tank type water closet only
30
Why should an air gap be provided in a lavatory or a sink?
All of these
31
What is the required nominal pipe size lavatory fixture supply pipe?
10 mm
32
Plumbing fixtures are rated according to the amount of waste water it can discharge per nuit time. What term is it referred to?
Fixture unit
33
Which of the following terms denote gooseneck?
½ S-trap
34
Indirect waste pipe system is generally applied in what type of fixture?
Refrigerator waste
35
Vent pipes should be installed in the plumbing system in order to prevent _________.
Backpressure
36
Which type of sewage disposal system is considered most insanitary?
Cesspool
37
What is the recommended minimum size of water service pipe of a domestic (house) structure?
19mm
38
What design provision should be critically considered in the design and construction of a septic tank?
Manhole
Inlet and outlet
Airspace
All of these
All of these
39
Roughing-in includes the following items or components except:
Setting of fixtures
40
It is considered the art and science of installing in building pipes, fittings, fixtures and other appurtenances for bringing in water supply and removing wastes or waterborne wastes. What is it?
Plumbing
41
Which in the list is not a type of rigid plastic pipe?
Polybutylene
42
A stack is appropriately applicable to a vertical line of ____________.
Vent
Waste
Soil
All of these
All of these
43
Which in the list is a term not aptly used in sanitary drainage system?
Riser
44
Which of the following would logically have the least pipe size?
Fixture drain
45
A yoke is a type of ventilation used as an inter-connection betweenwhat sections or portions of plumbing system?
Vent stack and soil stack
46
A water main is generally and appropriately installed ___________.
At street side underneath pavement
47
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
48
Waste water is discharged or removed from fixtures such as lavatory, mop sink, kitchen sink, floor drain, etc.
Grey water
49
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?
Unit vent
50
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 capacity of tank and its dimenstions.
50-75 gals per capita per day
51
When designing and specifying sanitary pipes particularly plastic pipes, how are these pipes measured?
Nominal inside diameter
52
Upon initial inspection of plumbing system, what characteristic easily distinguishesauPVC (unplasticized polyvinyl chloride) sanitary pipe from a CPVC (chlorinated polyvinyl chloride) water supply.
Color
53
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
54
Arrange size of sanitary drainages pipes from smallest to largest. This system of pipe arrangement is observed as a method of establishing which pie should be the smallest and the largest relative to flow of sewage.
Fixture drain, horizontal branch, stack and house drain
55
Recent development in water closet design resulted in design of water saver type toilets, what is the acceptable average consumption (flushing) of a water saver toilet?
6 liters per flush
56
What is the minimum drain pipe size of lavatory
32 mm diameter
57
In a cast iron or plastic sanitary drainage pipe, which part of such pipe receive the end of another pipe?
Hub or bell
58
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 process. What is this kind of pipe?
Polypropylene random co-polymer pipe
59
Water hammering usually occurs in high pressure water system due to pressure variation thereby causing that banging sound. Which device is used to prevent water hammering?
Air cap chamber
60
In medium to high rise buildings, a continuous recess on the wall or opening on the floor through which vertical pipes and stacks to different floors of a building. What do you call this opening?
Pipe chase
61
It is a kind of valve used on water supply system that prevents reverse flow of water inside it; a kind of backflow preventer. What is it?
Check valve
62
A type of water closet flushing design system characterized by its whirlpool-like flushing action of water typically from a low-strung tank; tank has an all-water surface inside the bowl and has a virtually silent flushing action; Model is expensive.
Siphon vortex
63
What 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?
Hydropneumatic system
64
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 wye branch, 1/8 bend and inverted wye) connected between the soil of or waste stack and vent stack at every five branch intervals.
Yoke vent
65
Which of the following water treatment methods are used to remove or duce number of biological contaminants such as bacteria (e.coli, listeria, etc.)
Chlorination
66
The size of downspout can be calculated using the following parameters except:
Wall thickness of pipe
67
What piping schedule of plastic pipe is usually used for downspouts?
Series 600
68
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.
69
In sanitary system engineering, what general term is used to refer to the liquid or semi-solid sewagethat contain organic and biological materials or substance in a septic tank?
Septage
70
A term in plumbing denoting pressure within the sanitary drainage or vent piping system that is greater than atmospheric pressure (>14.7psi); such condition can result to backflow.
Backpressure
71
In a typical catch basin, what is the standard number of chamber/s that should be provided in every unit.
1
72
A word that is synonymous with hub; it is the enlarged portion of a pie into which another pipe of the same or different size is inserted into.
Bell
73
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
74
In a typical bathroom group, the term used to refer to a bathroom containing a water closet, a lavatory and a bathtub.
Full bath
75
Areceptacle 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
76
A general term in plumbing used to refer any vertical line of soil, waste or vent piping hence, such pipe may contain liquid, solid or air.
Stack
77
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 user. This type of sewage disposal system is considered insanitary.
Privy
78
The abbreviation DWV stands for __________; a common term used in plumbing.
Drainage, waste and vent
79
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 is it?
Trap seal
80
A water treatment process where some suspended matter from water is removed by simply 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
81
A water supply pipe, 200m 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
82
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
83
A valve in which the flow of liquid is controlled by a rotating drilled bal that fits tightly against a resilient (flexible) seat in the valve body.
Ball valve
84
A term in plumbing which refers to any group of two or more similar adjacent fixtures which discharge into a common horizontal waster or soil branch.
Battery fixtures
85
A vertical length of soil or waste stack at least eight feet in height (a storey height), within which the horizontal branches from one storey or floor of the building or structure are connected to the stack.
Branch interval
86
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
87
What is the code prescribed slope of horizontal sanitary drainage pipes? Such slope requirement is critical as it allow the smooth flow of liquid inside the pipe.
1/4 in. per ft. (2%)
88
A kind of return bend of small-sized 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
89
Trap seal may be lost in any of the following manner except:
Sedimentation
90
In a typical septic tank, what is its minimum number of chambers as required by the code and health authority?
2 (digestive and leaching chambers)
91
In sanitary system, a term which refers to the semi-liquid organic matter that settles at the bottom of the septic tank; it consists of decomposed matter resulting from anaerobic bacterial action.
Sludge
92
Gutters, downspouts, leaders, catch basin, junction boxes, area drains, etc. are components of what system in plumbing?
Storm drainage system
93
In hydrology, it is a water bearing stratum of ground where water is accumulated by percolation and absorption of water though a layer of permeable soil stratum.
Aquifer
94
What is the minimum code requirement regarding from sewage from lavatory, floor drains, sinks and fixtures having similar function?
15.2 m.
95
A system of pies that collect discharge from sewage from lavatory, from floor drains, sinks and fixtures having similar function.
Waste piping system
96
A portion of the sanitary drainage system installation designed to provide and maintain balanced atmospheric pressure within the system, thereby preventing trap seal loss, backpressure, siphonage, backflow, retardation of flow and ultimately material deterioration.
Ventilation system
97
A mechanical or physical method of water treatment used to remove or separate solids from fluid by interposing a medium to flow fluid through which fluid can pass but solids retained.
Filtration
98
A kind of check valve used at the end of the suction line of a pump. It is designed to prevent water from flowing back into the tank and causing priming problems.
Foot valve
99
A source of water which can be made by excavating, digging, boring or drilling into ground for the purpose of obtaining water. Water obtained from this source is accumulated in aquifers resulting from percolation and absorption though ground.
Well
100
A kind of sewer system where both sanitary waste and storm water are drained into.
Combination sewer
101
What do you call a device used in fixtures for flushing? This device discharges a pre-determined quantity of water to a fixture for flushing purposes nad is activated by direct water pressure.
Flushometer valve
102
An opening in a piep used for the purpose of cleaning its interior, also for inspection and declogging or removing debris inside pipe runs and stacks; it is fitted with a removal plu or cap and usuallyplaced on slab or underneath slab.
Cleanout
103
A general term which refers to the process of removing contaminants from raw water. It involves several processes that is intended to render raw water potable and safe for consumption.
Water purification
104
Which of the following is a violation or in contrast with the basic plumbing principles?
Water closet may be located in unlighted or unventilated room
105
The following are components of a basic plumbing system except:
Utility boxes
106
A cylindrical conduit or conductor, the wall thickness is sufficient to receive a standard pipe.
Pipe
107
A waterlight receptacle which the discharge of sanitary plumbing system or part thereof, designed and constructed to retain solids, digest organic matter through a period of detention and to allow the liquids to discharge into the soil outside of the tank through a system of open joint subsurface piping or a seepage pit.
Septic tank
108
A loosely lined excavation in the ground, which receives the discharge of a septic tank and designed to permit the effluent from the septic tank to seep through the bottom and sides of the pit:
Cesspool
109
A common measure of the probable discharge into the drainage system by various types of plumbing fixtures on the basis of one unit of this being equal to a discharge rate of 7.5 gals pre minute or one cubic foot of water per minute.
Drainage fixture unit
110
The installation of parts of the plumbing system which can be completed prior to installation of fixtures or finishing. This includes drainage, water supply and vent piping and necessary fixture supports.
Roughing-in
111
A water supply pipe that extends vertically on full storey or more to convey water to fixture branches or group of fixtures.
Riser
112
Which of the following devices, methods or contraption can prevent backflow in bath water supply and drainage system?
All of these
113
A fitting or device designed and constructed to provide, when properly vented, a liquid seal which prevents backflow and passage of foul air and gasses without materially affecting the flow of sewerage or waste water through it.
Trap
114
A suction created by the flow of liquids in pipes; a pressure less than the atmospheric pressure.
Backpressure
115
A vertical pipe which conveys only wastewater or liquid waste free of fecal matter.
Waste stack
116
A pipe which conveys potable water from building the building supply pipe to the plumbing fixtures and other outlets.
Water distributing pipe
117
Any pipe which conveys the discharge of water closet, urinal or fixtures having similar function, with or without the discharges from other fixtures to the building drain or building sewer.
Soil pipe
118
In a building, it consists of water service pipe, water supply line, water distributing pipes and the essential branch pipes, valves and all other appurtenances for the supply of potable water.
Waters supply and distributing system
119
Where can you find a flushometer valve installed?
Urinal
120
Water which comes from discharges of laundry trays, lavatories, bathtubs, etc.
Grey water
121
What property of water is characterized as its ability to stick to itself and pull itself together?It can be demonstrated on a dripping trap where water clings to outlet of tap and forms a tiny globule before it falls.
Surface tension
122
Hardness in water can be observed in the following ways except:
When using soap, it easily produce bubbles
123
What do you call iron that is present in water.
Ferrous bicarbonate
124
In the coliform group of bacteria, e. coli is present in fecal matters as well as those birds and other animals. What is e in the abbreviation e. coli?
Escherichia
125
This is the process whereby salt content in water is removed thereby rendering potable water. It is done by heating seawater then pumping the water into low pressure vessels where water is partially vaporized. Water vapor is then condensed and turned into potable water. What do you call this process?
Desalination
126
What is the most common type of water distributing system? This method is dependent on the pressure provided by water main and involves a minimum number and type of components such as overhead water tank and pressure tank.
Direct (pressure) system
127
What system of joint may be used in bell and spigot type cast iron pipe?
Caulked joint
128
The process of removing suspended matter in water along with some discoloration using hydrated sulfate or commonly called alum to form a gelatinous substance; also known as flocculation.
Coagulation
129
It refers to the continuous exchange of water within the hydrosphere, between the atmosphere, ground surface, underground and water surface.
Hydrologic cycle
130
What fits into a bell or hub?
Spigot
131
Where can a cleanout be located?
All of these
132
The following are examples of drainage fittings except:
Street tee
133
What is the minimum trap and trap arm size of a lavatory (single)?
32 mm.
134
Which condition qualifies the term battery of fixtures?
All of these
135
What type of ventilation system is used in fixtures such as sinks that are located away from walls and partitions?
Looped vent
136
A kind of trap seal loss resulting from charge in temperature. It usually happens when fixture in not always used.
Evaporation
137
The length along the center line of pipes and fittings. This is measured when pipes and fittings are installed.
Developed length
138
A bathroom that contains a water closet and a lavatory without a bathtub
Half bath
139
A tank or pit that is provided below normal grade such as in basement of a building from which waste or sewage is discharged into and removed by mechanical means into an ultimate means of waste disposal such as street sewer.
Sump pit
140
The following are example of plumbing fixtures except:
Trap
141
Which type of venting system is used to ventilate two fixture traps usually placed or installed side-by-side or back-to-back?
Common vent
142
In a trap, it is the lowest portion of the inside top surface of the channel through the trap. What is it?
Dip
143
In a horizontal pipe, it is the lowest portion of the inside part of the pipe. What is it?
Invert
144
Which of the following is considered a plumbing appurtenance?
Vacuum breaker
145
In a plumbing system installation, a pipe which could be either horizontal or vertical that conveys only liquid waste free from fecal matter, e.g. lavatory, floor drain, bath tub drain pipe.
Waste pipe
146
A waste pipe that does not connect directly with drainage system; waste is collected through a receptacle, fixture, receptor or interceptor through an air break, e.g. refrigerator waste, washing machine, dish dryer or washer, etc.
Indirect waste pipe
147
The following are examples of materials used for drain or sewer pipe above ground installation except:
Vitrified clay pipe
148
In back-to-back fixture connection, the following may be used except:
Double inverted wye
149
A horizontal pipe is a pipe that makes an angle of __________.
Less than 45 degrees with the horizontal
150
A measure of the probable discharge into the plumbing system by various type of fixtures; plumbing fixtures are rated according to their discharge capacities in cu. Ft. per min. or gals per min. unit.
Drainage fixture unit (dfu)
