Questions Bank pt. 1

Question 1

May be used either for the collection of water without consideration of pressure, or for storing water under air pressure or under a static head for future concrete, stainless or plain steel.

Answer 1

Cistern / cistern tank

Question 2

What is the best fixture for a public comfort room?

Answer 2

flushometer

Question 3

What can discharge directly to the sewer system?

Answer 3

building sewer

Question 4

Use of extreme water pressure so as not to affect existing foundation in the vicinity. It makes use of a suction pump above, while casing acts as the pump riser

Answer 4

jetted wells

Question 5

Underground container for waster matter, a covered underground tank or well for the collection of waste matter and water, especially sewage.

Answer 5

sump pit

Question 6

To ensure leakage, a G.I pipe when threaded has to use a lead liquid or tape around the thread before tightening the fittings

Answer 6

Teflon

Question 7

There is a septic tank installed on the top of a rock by the seashore. The tank is exposed in low tide and covered in sea water during high tide. Which of the following would be an appropriate water proofing for it?

Answer 7

Water proof all surface, exterior and interior

Question 8

It increases in energy converted to gain in pressure energy when the liquid is allowed to pass through an increase area.

Answer 8

dynamic

Question 9

The volume of liquid passing through a cross section of a stream in unit time is called?

Answer 9

discharge

Question 10

Instrument used to measure the water flow.

Answer 10

venturi meter

Question 11

Pour index horsepower is how many foot pounds per minutes?

Answer 11

33,000

Question 13

It is a tank that makes life easier for the well or booster pump by preventing rapid and unnecessary pump motor cycling

Answer 13

pressure tank

Question 14

It is a valve the use a rubber gasket to shut off water flow and must be installed in the correct direction to work properly

Answer 14

stop valve

Question 15

It may contain many trace minerals and chemicals, viruses and bacteria and may be classified as water which is harder than distilled water

Answer 15

soft water

Question 16

These are advantages of vacuum system versus gravity system, except:

Answer 16

low maintenance required

Question 17

These are disadvantages of vacuum system versus gravity system, except:

Answer 17

Always self-cleansing

Question 18

Applicable join connection for asbestos cement pipe

Answer 18

mechanical joint

Question 19

PE and PB pipes shall not be threaded

Answer 19

true

Question 20

What is the main reason why globe valve is suitable for throttling services?

Answer 20

ball and gate valves tend to vibrate under flow, and erosion is concern when using gate valves

Question 21

A valve usually used in high temperature services

Answer 21

ball valve

Question 22

A valve usually used in high pressure services

Answer 22

globe valve

Question 23

Where are dampers installed to regulate the amount of cool air for an even distribution to outlets?

Answer 23

at the branch supply duct as far as practical from the outlet

Question 24

A tank constructed to special standards to withstand pressure and usually coated inside with corrosion resistant treatment as the water makes direct contact with the interior. The air compressed above the water.

Answer 24

air cushion tank

Question 25

A kind of pressure vessel used in the hydropneumatic pressure system which water is totally confined in an elastic rubber bag. When water is pump the bag expands, compressing the air in the cylinder until the pressure switch reaches its setting and shuts off the motor

Answer 25

separated air cushion cylinder

Question 26

What is the minimum distance between a tub spout and the flood level rim level of a tub?

Answer 26

6"

Question 27

What is the maximum distance away from a water heater you can install a shut off valve?

Answer 27

1.5 m

Question 28

The standard size of an outlet of a dry standpipe located for each floor is

Answer 28

64 mm (2 1/2")

Question 29

The general term for the hot or cold water pipes containing potable water

Answer 29

water distribution pipes

Question 30

It is customary that a full open type of valve is used in several locations in a water distribution system. Which location in the following list does not require one?

Answer 30

on the main water distribution pipe near the water service

Question 31

In a water system with constant water supply supplying series of plumbing fixtures, water supply drop is experience when the fixture in the series are simultaneously opened. Which poor design in the plumbing system causes this?

Answer 31

insufficiency in the size of the water service and distribution pipe

Question 32

A type of check valve and placed at the pumps wet well

Answer 32

foot valve

Question 33

It is the portion of the roadway section adjacent to the curb which utilized to convey storm water runoff.

Answer 33

gutter

Question 34

To cause water or other liquid to percolate through something, so as to dissolve out soluble constituents

Answer 34

leach

Question 35

The quality of galvanized iron pipes are rated by:

Answer 35

schedule

Question 36

Liquid sewage t hat has been treated in a septic tank or sewage treatment plant

Answer 36

effluent

Question 37

In RNPCP is the lowest portion of the interior part of any pipe of conduit that is not vertical

Answer 37

invert

Question 38

How many gallons do an average daily consumption of a bathtub?

Answer 38

30 gallons

Question 39

Fluoride as additive in water supply is a chemical for:

Answer 39

dental

Question 40

Faucet fitted with nozzle curving downward used as a draw-off tap:

Answer 40

lavatory faucet

Question 41

A flexible type pipe that is excellent in chemical and crush resistance has impact strength and flexibility and good low temperature performance. (black-bluish pipe).

Answer 41

polybuthylene

Question 42

A flexible type of pipe known to have the only flexible plastic tubing suitable for use with hot and color water pressure system and it is also known as an excellent chemical resistance to acids and alkalis but is not suited for fuel oil, gasoline or kerosene distribution system. (blue or gray pipe)

Answer 42

polybutylene

Question 43

In RNPCP, it is a metallic sleeve caulked or joined to an opening in a piping into which a plug is screwed that can be removed for cleaning the interior of the pipe.

Answer 43

ferrule

Question 44

Common source of potable water in some rural areas

Answer 44

ground water

Question 45

Theaters or movie houses' water requirement is determined or estimated at 5 gallons of water per day per

Answer 45

total number of auditorium seat

Question 46

A type of sewage disposal that has a vault constructed or concrete for the collection of raw sewage and a wooden shelter.

Answer 46

privy

Question 47

A coupling device for connecting 2 pipes neither of which can be turned, consisting of two internally threaded end piece which are tightened around the pipes ends to be joined, and externally threaded center piece, which draws the two end piece together as it is rotated

Answer 47

union

Question 48

A type of coupling or joining device having internal screw threads or nuts with opposite screws at the end. By turning the internal screws, it is possible to connect two metal rods and regulate the length and tension of this rods.

Answer 48

turnbuckle

Question 49

The common ingredients for water disinfectant, except for?

Answer 49

bichlor

Question 50

The sewage treatment process that involves the use of hydrochloride to kill pathogenic bacteria.

Answer 50

disinfection

Question 51

How do we size sewage pits?

Answer 51

volume of liquid and solid waste

Question 52

During site inspection, the architect notices that a soil pipe will cross a beam, what's the best advice he can do?

Answer 52

simple ask to relocate, it's just a pipe anyway

Question 53

What is the most efficient tools for cutting cast iron pipe?

Answer 53

snap cutter

Question 54

Minimum clearance from the floor of pipes for AC units when crossing a hallway or corridor

Answer 54

2.3

Question 55

Where will you least place a downspout?

Answer 55

in between window openings

Question 56

How could you differentiate between a soil and waste pip when laid side by side?

Answer 56

diameter

Question 57

Where would you locate water distribution pipe farthest from?

Answer 57

large trees

Question 58

Which wall is best suited if soil pip will run through it?

Answer 58

6" CHB

Question 59

What is the standard water consumption (gallon/person/day) used in a 2 storey residence?

Answer 59

30-40

Question 60

Alternative to conventional septic tank

Answer 60

aerobic treatment system

Question 61

When water goes up through a vertical pipe, it stops at a certain height. Why?

Answer 61

the pressure inside the pipe equates to the pressure outside the pipe causing the water to stop at that point where it appears

Question 62

The minimum size of a swimming pool drain?

Answer 62

2" dia

Question 63

The minimum sized of a trap and waste branch for a size of foot bath?

Answer 63

2" dia

Question 64

Which plumbing fixture does not have a water-saving feature?

Answer 64

flow limiting feature

Question 65

What should not be permitted to cross a beam?

Answer 65

soil pipe

Question 66

Can you embed a 4" diameter pipe in a 150 mm wall?

Answer 66

no

Question 67

According to NBC, pipe support should be every

Answer 67

3 m

Question 68

In high rise buildings, why is there a need to resize water supply pipes?

Answer 68

to use up the difference in pressure from the service to supply fixture

Question 69

A sewage treatment that includes the exposure to air

Answer 69

aerator

Question 70

Should not be use for a pipe chase?

Answer 70

dry wall

Question 71

Where are storm sewer usually placed?

Answer 71

near the curb

Question 72

Which is not a rule of a thumb when designing a drainage?

Answer 72

it should be underneath the driveway

Question 73

Opening use to received pipes?

Answer 73

pipe chase

Question 74

Copper pipes are classified as what main pipe?

Answer 74

ceramic

Question 75

Best size of pipe connected to 5 sinks?

Answer 75

4"

Question 76

What type of material is used for the base of a septic tank?

Answer 76

reinforced concrete

Question 77

What do you call a water-tight receptacle used to store household waste?

Answer 77

septic vault

Question 78

Type of permissible trap, except?

Answer 78

3/4 S traps

Question 79

The prescribe color coding of piping under refrigerating division of all pipes, and fittings?

Answer 79

black

Question 80

Standard water pressure from NAWASA?

Answer 80

60 psi

Question 81

The legality of Revised Plumbing Code of the Philippines last 1999 was based on what Section or RA 13787

Answer 81

Sec. 4

Question 82

Basic principles listed in RNPCP 1999 was based on what section of RA 1378?

Answer 82

Sec. 5

Question 83

What is DAO #34 series of 1990 all about?

Answer 83

revised water usage/ classification water quality criteria

Question 84

What is DAO 35 series of 1990 all about?

Answer 84

Revised Effluent Regulation of 1990

Question 85

What is DOH Administrative Order 2007-2012 all about?

Answer 85

Phil. National Std. for Drinking Water 2007

Question 86

According to Accessibility Law, urinals shall be of the wall hung and should have an elongated lip; the minimum height of the lip should be from the toilet floor

Answer 86

400 mm

Question 87

In accordance with National Building Code, how much be the plumbing fee for plumbing installation of shower head in excess of one plumbing unit?

Answer 87

Php 2.00

Question 88

In accordance with National Building Code, how much be the plumbing fee for plumbing installation of a dental cuspidor?

Answer 88

Php 4.00

Question 89

According to Accessibility Law, the distance between centers of urinal to the wall for person with disability shall be?

Answer 89

460 mm

Question 90

The quantity of sewage flow from a single-family dwelling per person is gpd

Answer 90

75

Question 91

Who originally proposed using drainage fixture units to represent a fixture's load-producing effect on the plumbing system?

Answer 91

Roy B. Hunter

Question 92

What approximate percentage of new home construction employs a septic tank/ soil absorption sewage disposal system?

Answer 92

25%

Question 93

Sewage pit connecting piping

Answer 93

should be laid at a minimum grade of 2%

Question 94

A wye fitting has a catalog designation of 4 x 3 x 1 tee. What does the second number 3, indicate?

Answer 94

downstream size of main

Question 95

Which common formula for calculating flow in pipes is meant for open-channel flow?

Answer 95

manning

Question 96

The generally accepted pressure in a sanitary drainage system is

Answer 96

1 inch of water column

Question 97

The drain lines for distributing the effluent from the septic tank should be spaced no greater than apart

Answer 97

6 ft

Question 98

The absorption area to be provided for an individual residence containing 3 bedrooms with a percolation rate of 3 minutes is recommended to be

Answer 98

300 sq. ft

Question 99

Centerlines are always used to indicate the center of the object. At most, you will find these as lines sued to show the center of a circular object. What is this line made of?

Answer 99

alternating long and short dashes

Question 100

What drafting symbol can be used when a riser diagram becomes too long to fit in a single oage?

Answer 100

match line

Question 101

These lines are thin and dark and are constructed with units of one long dash, followed by two short dashes. These lines indicate the scope of movement of a part has like showing the path a door will follow when opened

Answer 101

phantom lines

Question 102

On what point of the pipe cross-section is the pipe's elevation always referred to?

Answer 102

invert

Question 103

It is a letter/ number designation assigned to each type of fixture

Answer 103

fixture label

Question 104

These are dark and thick lines that indicates an object such as wall. These are the lines you will see when used to indicate the foundation and walls in the building as drawn in the plane

Answer 104

object line

Question 105

Where is the best place to begin drawing a sanitary waste and vent riser diagram?

Answer 105

at the farthest point downstream on the main

Question 106

These are thin, solid lines, that provide a stopping point for the pointed ends of dimension lines

Answer 106

extension line

Question 107

What symbol that commonly appear on a domestic water riser diagram are not necessary to show on a sanitary riser?

Answer 107

direction arrow

Question 108

What is the name of the washer that seals the bottom of

Answer 108

mack washer

Question 109

What type of water close that has a small hole in the bottom that delivers water into the trap?

Answer 109

siphon jet water closet

Question 110

In the change of direction of waste piping from vertical to horizontal, a long sweep or combination is utilized. From that point on the change of direction, it is recommended not to install any branch within the distance of 10 times the diameter of horizontal pipe. What is the reason behind why a branch should not be introduced?

Answer 110

due to presence of hydraulic pump