SPDI Recent and Similar Board Examination Questions
1. Addition of coagulants, such as ferrous sulfate and lime, to the water which cause the larger suspended
particles to form a gelatinous mass which precipitates readily. The precipitate is gathered in large
dumps and disposed of.
COAGULATION and PRECIPITATION
2. Water is passed through layers of sand and gravel in concrete basins in order to remove the finer
suspended particles.
FILTRATION
3.
Water is passed through basins so sediments can settle through a period of time
SEDIMENTATION
4.
Water is injected with hypo-chlorite or chlorine gas to kill the harmful bacteria.
CHLORINATION
5.
Types of wells
Shallow and Deep Well
6. Similar to dug well, but constructed using an auger driven in by hand or with power tools. Seldom
hand driven below 15 meters, but can reach 40+ meters with power tools
BORED WELL
7. Use of extreme water pressure so as not to affect existing foundations in the vicinity. Makes use of a
suction pump above, while casing acts as the pump riser. Used only where ground is relatively soft,
hence sometimes referred to as "Sand-Point Wells".
JETTED WELL
8.
Dug with a sharp pointed hollow slotted iron rod and well screen. Depths are from 10-15 meters
DRIVEN WELL
9.
Used for drilling oil. Can reach up to 1000 m
DRILLED WELL
10. 2 Most Common Sources of Contamination: Septic Tank / leach fields
Livestock feedlots
11. Distance of Septic Tank/ leach field and livestock to avoid
contamination of wells. not less than 100 ft.
12. Water is drawn into the pump & discharged with a centrifugal force
CENTRIFUGAL PUMP
13. Piston pumps that operate with controlled speed. The discharge from a reciprocating pump is
pulsating and changes only when the speed of the pump is changed. Sometimes an air chamber is
introduced to regulate the pulsation. RECIPROCATIONG PUMP
14. Pumps typically used for drawing water up from a well.
JET PUMPS
15. Are used in applications where excess water must be pumped away from a particular area.
Sump pumps
16. in general, is a category that encompasses a number of styles of pumps that are used to pump out
collected fluid
Sump pumps
17. are centrifugal pumps used for large applications because of their multiple impellers
Turbine Pumps
18. Does not have any pressure concerns but relies on gravity to supply water to fixtures below.
Usually made of galvanized steel, stainless steel, or reinforced concrete, it can come in various
shapes and sizes
Overhead Tank
19. Usually built of reinforced concrete underground and connected with a pump
CISTERN
20. Used in the Air Pressure System. Often used with a pump. Also makes use of a pressure relief
valve, which relieves pressure automatically if necessary.
PNEUMATIC WATER TANKS
21. Used mainly to completely close or completely open the water line (does not control flow of
water). Best suited to the main supply and pump lines wherein operation is infrequent.
GATE VALVE "aka-full way valve"
22. Used mainly to completely close or completely open the water line (does not control flow of
water) Best suited to the main supply and pump lines wherein operation is infrequent
GATE VALVE
23. 2 TYPES OF GATE VALVE
The Wedge Shape or Tapered Disc
24. The Double Disc Valve Main function is to prevent reversal of flow (backflow) in the line
CHECK VALVE
25. 4 TYPES OF CHECK VALVE
The Swing Check
Valve
The Lift Check
Valve
Horizontal
Check
Vertical Check
Valve
26. Operates in the same manner as globe valve (disc & seat design) used to make a 90° turn in a line
Reduces number of joints
ANGLE VALVE
27. Located at the lower end of the pumps. Used mainly to prevent loss of priming of the pumps
a.k.a. 'Retention Valve' FOOT VALVE
28. Used on water systems, heating systems, compressed air lines & other pipe lines with excessive
pressure
Safety Valve
29. Operates by the compression of a soft packing upon a metal sheet
COMPRESSION COCK
30. Operates with a round tapering plug ground to fit a metal sheet.
Key Cock
31. Has grooves fit for a hose
Hose bibb
32. a knocking in the pipes caused when faucets in the lower levels are shut off abruptly or automatically
the force exerted by the decelerating water causes the pipes to shake and rattle
Water Hammer
33. the flowing back of used, contaminated or polluted water from a plumbing fixture or vessel into a
water supply pipe due to a negative pressure in such pipe
Back Siphonage
34. the flow of water or other liquids, ,mixtures, or substances into the distributing pipes of a potable
supply of water to a tank, plumbing fixture, or other device and the flood level rim of the
receptacle.
BACK FLOW
35. Pipes expand and contract due to continuous changes in temperature. An air space should be
provided to allow for breathing room
Expansion / Contraction
36. Friction occurs when liquid flowing through the pipe makes contact with the pipe enclosures, thus
reducing the speed of
Water flow.
37. There is greater Friction Head Loss with longer pipes, small diameter pipes, and a high number of
valves of fittings
Friction Head Loss
38. Water is obtained through a large intake installed on the lake basin & extended into deep water
Direct Pressure Distribution
39. Water is taken form a drilled well or underground water. Involves individual special mechanical
equipment.
Indirect Pressure Distribution
40. Pipe from the street water main or other source of water supply to the building served
SERVICE PIPE
41. Device used to measure in liters or gallons the amount of water that passes through the water service.
Water Meter
42. The principal water distribution pipe running from the water meter from which the various
branches and risers to the fixtures are taken.
Horizontal Supply Main
43. A water supply pipe extending vertically to one full story or more to convey water into pipe branches
or plumbing fixtures
Riser
44. The water supply pipe between the fixture supply pipe and the water- distributing pipe
Fixture Branch
45. Used for control, isolation and repair of the water distribution system
Controls Valves
46. Water is provided by the city water companies using normal pressure from public water main
Direct Upfeed
47. When pressure supplied by city water supply is not strong enough. Compressed air is used to raise
and push water into the system
Air Pressure System (Pneumatic)
48. Water is pumped into a large tank on top of the building and is distributed to the fixtures by means of
gravity.
Downfeed (Overheadfeed) or Gravity System
49. Used for Hot Water Space Heating System
System Relief Valve
50. Used for Hot Water Supply System
Temperature & Pressure Relief
51. The standpipe is a pipe installed in buildings not as part of the water supply or waste disposal system
but primarily for use as water conveyor in case of fire
DRY STAND PIPE
52. Height of Dry stand Pipe
1.20 meters
53. The minimum diameter for a wet standpipe is
connection
51 mm - 15meter
54. For those wet stand pipe more than
for those less than
form the fire service
from the fire service connection, the minimum diameter is
15 meters - 63mm
55. Coverage of 1 sprinkler head for Light Hazard Occupancy
20 square meter
56. Coverage of 1 sprinkler head for Extra hazard Occupancy
10 square meter
57. Minimum dimension of Water closet center to side wall
0.375 meters
58. Minimum dimension of Water closet center to WC center
0.75 meters
59. Discharges waste into a trap way located at the front of the bowl. Has a bulge on the front, cost less
but is least efficient and noisiest
Wash Down
60. Flushes through a siphon action created in the trapway
Reverse Trap
61. Has a larger trapway making it less likely to clog, quieter flushing action and retains
a large amount of standing water
Siphon Jet
62. Less noisy and very efficient, flushing action is started by a whirlpool motion followed by a
complete flush down and retains a large amount of standing water
Siphon Vortex
63. flushing action is obtained directly from a flush valve connected into the bowl
Direct Flush Valve
64. Receptor floor shall drain not less than
2% - 4% slope
65. conveys only wastewater or liquid waste free of fecal matter.
WASTE PIPE
66. used for ensuring the circulation of air in a plumbing system and for relieving the negative pressure
exerted on trap seals.
VENT PIPE
67. 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
68. the vertical main of a system of soil, waste or vent pipings extending through one or more stories
and extended thru the roof.
STACK
69. any part of the piping system other than a main, riser or stack.
BRANCH
70. part of the lowest horizontal piping of a plumbing system which receives the discharges from the
soil, waste and other drainage pipes inside of a building and conveys it to the house sewer outside
of the building.
House/Building Drain
71. extends from the house drain at a point 0.60 meters from the outside face of the foundation wall
of a building to the junction with the street sewer or to any point of discharge, and conveying the
drainage of one building site. House/Building Sewer
72. use 45° wye branches, combination wye - 1/8 bend branches, or other approved fittings of equivalent
sweep
Horizontal to Horizontal change in direction
73. 45° wye branches or other approved fittings of equivalent sweep
Vertical to Horizontal change in direction
74. use 45° or 60° wye branches, combination wye -1/8 bend branches, sanitary tee or sanitary tapped tee
branches, or other approved fittings of equivalent sweeps.
Horizontal to vertical change in direction
75. A lavatory discharges
, which is equivalent tothe Fixture Unit (F.U.)
0.47 liters/sec or 28.3 liters/min (7.5 gallons per min or 1 cu ft per min)
76. Minimum slope or pitch of horizontal drainage pipe
2% or 20mm/m (¼" per foot)
77. Traps used for lavatories, kitchen sinks, laundry tubs, & urinals
Common P-Trap
78. Water seal is about twice the size of The common P-trap
Deep Seal P-Trap
79. Used for fixtures such as slop sinks that are usually built low in the ground, leaving very little
space for a foundation & a trap
Stand Trap
80. Used within the line of the house drain
Running Trap
81. Used for fixtures that discharge large amount of water (bathtubs, shower
or floor drains) Drum Trap
82. Each fixture trap shall have a trap seal of water of not less than
and not more than
(except
where a deeper seal is found necessary by the Administrative Authority for special conditions.
51 mm - 102 mm
83. The vertical distance between a fixture outlet tailpiece and the trap weir shall not exceed
length.
0.60 meters
in
84. The developed length of the trap arm (measured from the top of closet ring to inner edge of vent )
of a water closet or similar fixture shall not exceed
1.80 meters
85. Clean out distance is _
15 meters
86. A pipe installed to vent a fixture trap, that connects with the vent system above the fixture served
or terminates in the open air
Individual Vent or Back Vent
87. A vertical vent line that provides additional circulation of air between the drainage and vent
systems or to act as an auxiliary vent on a specially designed system such as a "yoke vent"
connection between the soil and vent stacks. Relief Vent
88. A pipe connecting upward from a soil or waste stack below the floor and below 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 stacks.
Yoke or By-pass Vent
89. A group vent pipe which starts in front of the extreme (highest) fixture
connection on a horizontal branch and connects to the vent stack.
Circuit Vent
90. A vertical vent connection on a horizontal soil or waste pipe branch at a
point downstream of the last fixture connection and turning to a horizontal
line above the highest overflow level of the highest fixture connected there
Used in spaces without partitions
Looped Vent
91. That portion of a vent pipe through which wastewater also flows through.
Wet Vent
92. A pipe or shaft to convey foul air from a plumbing fixture or a room to the outer air.
Local Vent
93. A vent that does not carry liquid or water-borne wastes.
Dry Vent
94. The extension of a soil or waste stack above the highest horizontal drain connected to the stack.
Stack Vent
95. The vertical vent pipe installed primarily for providing circulation of air to and from any part of the
soil, waste of the drainage system. The uppermost end above the roof has traditionally been referred to
as Vent Stack Through Roof (VSTR). Vent Stack
96. The diameter of an individual vent shall not be less than
of the drain to which it is connected.
32mm (1-1/4") - ½
nor less in size than
the diameter
97. Direct effect of the Minus & Plus Pressure inside the system due to inadequate ventilation of traps
Trap Seal Loss
98. A watertight covered receptacle designed and constructed to receive the discharge of sewage from a
building sewer, separate solids from the liquid, digest organic matter and store digested solids
through a period of detention, and allow the clarified liquids to discharge for final disposal
Septic Tank
99. Solid organic matter that are denser than water and settle at the bottom of the septic tank
SLUDGE
100.lighter organic material that rise to the surface of the water
SCUM
101.liquid content of sewage
EFFLUENT
102.Waste water with the exception of human wastes. From laundries, wash basins, sinks, tubs, etc.
Grey Water (or Area Water)
103.Water plus solid and liquid human wastes
Black Water
104.Brick lining shall have a minimum Private Sewage Disposal Systems compressive strength of
17225 kPa.
105.Oldest form of disposal of organic waste. Consists of a vault constructed of concrete for the
collection of raw sewage and a wooden shelter
Outside Privy
106.Installed in chemical laboratories, industries and other installations where acid wastes are being
discharged
Acid Resistant Cast Iron Pipe
107.Light in weight, slightly flexible and can take slight soil movement without danger of cracking or
pulling out of its joints. It is thus suited for house sewer and septic tank installations
Bituminous Fiber Sewer Pipe
108.One of the oldest materials used for sewer lines Highly resistant to most acids Because it is made of
clay, it is brittle and cracks easily when laid on unstable ground Made in short lengths of 750mm
Vitrified Clay Pipe
109.The oldest pipe used for plumbing systems Poisonous and injurious, is therefore not recommended
to convey water for human consumption
Lead Pipe
110.Made out of mild steel and expected to last 15 to 25 years
Galvanized Steel Pipe
111.Better then steel pipe for plumbing installation more resistant to acid waste
Galvanized Wrought Iron Pipe
112.Durable and extremely corrosive resistant
Copper Pipe
113.Most expensive Made of an alloy or zinc (15%) and copper (85%) Resistant to acids and has a
smooth interior surface
Brass Pipe
114.Superior type of pipe because it weighs less, is easy to cut, is flexible, has a smooth interior surface,
and is cheaper than steel Most are produced from synthetic resins
Plastic or Synthetic Pipe
115.Spraying the water into the atmosphere through jets or passing it over rough surfaces to remove
entrained noxious gases such as carbon dioxide or hydrogen sulfide
AERATION
116.True or False. A yoke vent is a relief vent.
True
117.A maximum of
fixtures connected to a horizontal branch shall be permitted to be circuit vented.
8
118.True or False. Chemical waste vent may be connected to sanitary vent prior to extending to open
atmosphere.
False
119.True or False. Chemical waste shall be connected to the building sewer after it exits the building.
False
120.True or False. Food handling equipment may discharge to the sanitary system thru an air break.
False
121.True or False. Every trap and trapped fixture shall be vented.
True
122.Sheet lead for vent pipe flashings shall weigh not less than
3
123.All indirect waste piping that exceeds
developed length, shall be trapped.
2, 4
pounds per square inch.
feet in developed length horizontally, or
124.True or False. Waste receptors may be installed in bathrooms or toilet rooms.
False
feet in total