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ACE 2 ENGINEERING UTILITIES > SEMI FINALS > Flashcards

SEMI FINALS Flashcards

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1
Q

Is that portion of the plumbing system that receives discharges of all soil and waste stacks within the building, and conveys the same to the house sewer

A

House drain

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2
Q

Sometimes referred to as the Collection Line of a Plumbing System

A

House drain

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3
Q

It can be installed underground, or maybe suspended below the floor or inside the ceiling.

A

House drain

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4
Q

In large building, it is usually suspended from the basement ceiling to avail of the gravity flow of waste to the main sewer.

A

House drain

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5
Q

House drain may be classified into four types

A
  1. Combine drain
  2. Sanitary drain
  3. Storm drain
  4. Industrial drain
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6
Q

Is a type of house drain that receives discharges of sanitary waste as well as storm water

A

Combined drain

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7
Q

The oldest form of house drain when public sewers are of the combination design

A

Combined drain

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8
Q

The type of house drain that is already phase out and no longer permitted

A

Combined drain

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9
Q

This type of house drain receives the discharges of sanitary and domestic waste only.

A

Sanitary drain

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10
Q

The waste is conveyed to a public sewer, or septic tank, by the house sewer.

A

Sanitary drain

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11
Q

Storm water is not allowed in this drain

A

Sanitary drain

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12
Q

Is a house drain that receives discharges from industrial equipment that contain some objectionable acid wastes.

A

Industrial Drain

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13
Q

_____ that contains acid waste terminates into a separate drainage basin

A

Industrial drain

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14
Q

Conveys all storm clear water, or surface water waste except sanitary wastes.

A

Storm drain

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15
Q

It terminates into lake, river, dry run, or natural basin

A

Storm drain

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16
Q

Is the most practical method to use in determining the size of a house drain

A

The Unit System

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17
Q

It has been formulated from tests conducted by the Uniform Plumbing Code Committee, a body consisting of representatives of management, labor and government standard agencies

A

The Unit System

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18
Q

Washbasin being the smallest type of plumbing fixture, would discharge waste approximately ____ in one-minute interval. Volume was found out to be closely one cubic foot of water

A

7 and 1/2 gallons

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19
Q

The Code Committee has finally decided to adopt the washbasin discharge as

A

One Fixture Unit

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20
Q

One fixture unit represents ____ of water

A

30 liters

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21
Q

On house drain, the Plumbing Code provides that no water closet shall discharge into a drain less than

A

75 mm or 3 inches pipe diameter

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22
Q

On house drain, the Plumbing Code provides that no more than two water closets shall discharge into any _____ horizontal soil branch, house drain or house sewer

A

75mm

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23
Q

The house drain being a _____ must produce the necessary velocity and discharge capacity at a certain inclination, to attain scouring action

A

Horizontal pipeline

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24
Q

It must function without abnormal or subnormal pressure in the plumbing system

A

House drain

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25
Q

Less than 2% slope is adopted when the depth of the sewer line in relation with the depth of the basement floor is

A

low

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26
Q

Less than 2% slope is adopted when long sewer line would require lower pitch but should not be less than

A

1%

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27
Q

Less than 2% slope is adopted in case the sewer line slope is very slight, installation of the pipe should be guided by leveling instrument for accuracy to prevent

A

Sags or trapped piping

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28
Q

The distance between the house sewer and the elevation of the basement

A

Total pitch

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29
Q

Grade or slope of the house drain could be estimated by dividing ___ in centimeters by the length of the _____ in meter

A

Total pitch (cm)
Longest branch (m)

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30
Q

A pitch or slope more than 2% will increase the _____ and _____ capacity of the pipe

A

velocity and discharge

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31
Q

Greater than 2% slope is a danger that it might _____ the depth of the water that is necessary to create a scouring action

A

decrease

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32
Q

Greater than 2% slope might cause a _____ if the drain is over loaded to a flow capacity

A

minus pressure

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33
Q

All changes in directions of house drain from horizontal to horizontal, or vertical to horizontal flow, should be done with

A

Long radius fittings

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34
Q

What should not be permitted in changes in directions of house drain

A

Short tees, 1/4 bends, and short turn L fittings

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35
Q

Soil branch should be run ____ to the main

A

Right Angle

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36
Q

_____ must run at right angle to the branch

A

Fixture connection

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37
Q

The house drain shall be provided with adequate number of cleanouts to prevent breaking of the floor, in case of

A

drain stoppage

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38
Q

The location of the _____ depends upon the good judgment of the plumber where it is readily accessible, in case of line trouble

A

cleanout

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39
Q

Any branch of the house drain terminating at a floor drain or fixture, shall be provided with ____, extended at least ____ above the floor inserted in a ______ Y branch in the direction of the drain flow

A

100mm diameter pipe
2 inches
45 degrees

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40
Q

The cleanout shall be equipped with _______ provided with a raised head that could be removed easily with a wrench

A

threaded screw cover

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41
Q

A cleanout extended above the floor, shall not be utilized as a

A

floor drain

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42
Q

The trap of a floor drain shall be placed not more than ____ below the finished floor line, to facilitate cleaning in case of line trouble

A

50 centimeters

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43
Q

A cleanout shall be installed at every ____ interval distance, and also at the base of all soil and waste stack

A

20 meters

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44
Q

What are the house drain appliances

A
  1. House Trap
  2. Area Drain
  3. Floor Drain
  4. Yard Catch Basin
  5. Garage Catch BAsin
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45
Q

Things under House Trap

A

a. House trap assembly
b. Back flow valves
c. Balanced valve
d. Unbalanced valve

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46
Q

Garage Catch Basins includes

A

a. Drain tile receptor
b. Sewage ejector
c. Automatic water siphon
d. Sump pit
e. Grease basins

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47
Q

Is defined as a device installed in the house drain immediately inside the foundation wall of the building

A

House Trap

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48
Q

It serves as a barrier and prevents the gases coming from the public sewer or septic tank in circulating through the plumbing system

A

House Trap

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49
Q

Considering the different gases being produced inside the public sewer and septic tank, Sanitary Authorities advocating for the use of ____ that is installed on the house drain

A

house trap

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50
Q

Is a device used in a drainage system to prevent the reversal of flow.

A

Back Flow Valve

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51
Q

It is installed in a house drain or branches of the house drain that are subjected to reversal flow of liquid.

A

Back Flow Valve

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52
Q

Is installed on the house drain, just near the foundation wall or near the toilet room under floor

A

Back Flow Valve

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53
Q

It is set in a level position to attain its full effectiveness

A

Back Flow Valve

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54
Q

Two patterns of Back Flow

A
  1. The Balance Valve
  2. The Unbalanced Valve
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55
Q

Is the most preferred patterm of back flow, because it has the characteristics of non-interferences in the movement of air inside the drainage system.

A

The Balance Valve

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56
Q

The interior mechanism consists of a brass-seat into which fitted a gate counter balanced with an adjustable cast iron weight

A

The Balance Valve

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57
Q

Similar to balanced valve, but is not preferred because of its recorded poor performance in the past

A

The Unbalanced Valve

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58
Q

The _____ assembly consists of a running trap installed under the basement floor to protect it from freezing.

A

Area drain

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59
Q

The trap is equipped with a cleanout

A

Area drain

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60
Q

The minimum size of an area drain is _____ to drain basement entryways, loading platforms, or driveways

A

10 mm or 4’’ pipe

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61
Q

Is defined as; a receptacle used to receive water to be drained from the floor into the plumbing system

A

Floor drain

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62
Q

Sanitary Authorities recognized this as plumbing fixture properly designed and located where to receive liquid floor waste

A

Floor Drain

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63
Q

An average residence is provided with ____ floor drains

A

two
One located near the heating equipment, and the other in the vicinity of the laundry.

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64
Q

In most instances, one floor drain is provided to serve the entire

A

basement

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65
Q

Every room where laundry equipment is used, shall be provided with adequate

A

Floor drain

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66
Q

It must be located where the overflowing water will not travel a great distance over the floor before it enters the drain

A

Drain proper

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67
Q

It is recommended that the floor drain be located at one end of the

A

laundry tub

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68
Q

Every floor drain shall be supplied with _____ from a fixture located nearby.

A

Running water

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69
Q

If the fixture is less than ____ from the drain, it should be tapped but not necessarily vented

A

1.50 meters

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70
Q

It should be connected to the house side and never to the sewer side of the trap, which supply water to a floor drain

A

Fixture drains

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71
Q

One of the causes of water on the floor is the presence of ____ accumulated inside the P-trap

A

sand and other objectionable wastes

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72
Q

Installing a _____ P-trap is too small for a human hand or tools to clean

A

50mm or 2inches

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73
Q

Problem occurs when P-trap installed might have been too _______ despite of its being small in size

A

below the floor line

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74
Q

The plumbing layout as _____ must be kept for future reference in case of trouble, otherwise hit and miss repair would be very difficult and costly

A

Built-in Plan

75
Q

Plumber should not install P-trap smaller than ____ on floor drain

A

75mm diameter

76
Q

Is usually installed on basement floor, near the heating equipment, below the kitchen sink, and vicinity of the laundry

A

Floor Drain

77
Q

_______ P-trap is recommended minimum size for floor drain. It should be installed not more than ______ below the floor line

A

75 mm or 3’’
20 centimeters

78
Q

It should be deep seal type

A

P-Trap

79
Q

The _____ P-trap is commonly used as floor drain

A

Low inlet hub pattern

80
Q

Shall connect into a trap so constructued that it can readily be cleaned and of a size to serve the purpose efficiently for which it is intended

A

Cellar or basement floor drains

81
Q

When subjected to back flow pressure, such drains shall be equipped with an adequate ____

A

Back Flow Valve

82
Q

Is defined as a receptacle used to catch surface water drained from cemented courts, driveways, and yards

A

Yard catch basin

83
Q

It could be a terminal for drain tile installations used to drain water from athletic fields

A

Yard Catch Basin

84
Q

Is a device designed to convey wastes from garage, wash rack, grease pits, and repair floors into the house drain.

A

Garage catch basin

85
Q

Wastes coming from these areas contain objectionable elements like grease, oil, grit and gasoline that are detrimental to the drainage installation as well as the sewage disposal system

A

Garage catch basin

86
Q

Oil and grease adhere to the ______ used in the treatment of sewage

A

Mechanical devices

87
Q

Its function is to retain these noxious materials and discharge the associated water into the house drain

A

Garage basin

88
Q

Use this to overcome stoppage in plumbing system cause by grease and oil

A

Grease Basins

89
Q

It shall be installed as close to the fixtures as possible

A

Grease trap

90
Q

More than one fixture can be discharge into the same trap, provided that the waste pipe is not very long and the trap has sufficient size

A

Grease trap

91
Q

A _____ placed on the ground is earth cooled.

A

Grease trap

92
Q

Is used on large installation and is most desirable type in installing the grease basin

A

Earth-Cooled Grease Trap

93
Q

The grease basin width should not be less than ______

A

60 centimeters

94
Q

The length of greese basin should be from ______ its width to attain smooth and non-agitated flow

A

3 to 4 times

95
Q

The minimum depth of concrete grease trap should not be less than ______ below the outlet invert

A

120 cm

96
Q

The size of a grease trap is measured through the ______ to be discharge

A

volume of fixture unit

97
Q

Grease trap could be sized according to the number of meals served estimated at ________ capacity for each meal

A

4 to 5 gallons

98
Q

They estimated double the actual volume of waste to which the grease trap will serve

A

Experienced sanitarians

99
Q

Is defined as, that portion of the horizontal drainage system, which start from the outer face of the building and terminate at the main sewer in the street or septic tank.

A

House Sewer

100
Q

Portion of the horizontal drainage system, which starts 90cm from the outer face of the building

A

House Sewer

101
Q

House sewer is sometimes called

A

Building Sewer

102
Q

Is financed and maintained by the government

A

Main Sewer

103
Q

Those houses along the street with main sewer line are required to connect their house sewers to the

A

Public sewer line

104
Q

Efficiency of a drainage installation depends upon the performance of the

A

house sewer

105
Q

The house sewer is connected to the main sewer by boring a small hole through the concrete pipe, using a

A

sharpened steel chisel or electric drill

106
Q

The house sewer pipe is connected to the main sewer entering at _____ or directly from the top

A

45 degrees angle

107
Q

Secure permits from the

A

sewerage authority

108
Q

The depth is found by measuring the length of the _____ of the house drain multiplied by the pre-planned ______ per meter

A

longest branch
pitch

109
Q

Add the required ______ ground coverings from the top of the concrete floor or _____ of ground covering without concrete floor

A

30cm
40cm

110
Q

The grade of the house sewer could be found through the difference between the

A

House sewer and the depth of the main sewer

111
Q

Additional grade can be made with the use of _____ considered as the most practical method of establishing grade

A

1/8 bend

112
Q

The old practice of the size of house sewer is to use _______ diameter cement or ________ pipe for house sewer

A

150mm or 6 inches
vitrified clay

113
Q

If plastic pipe or its interior surface texture equivalent is used, the diameter can be reduce to ____

A

100mm diameter

114
Q

Is that unit of the plumbing system that conveys rain or storm water to a suitable terminal

A

Storm drain

115
Q

It is not permitted to discharge into a septic tank or to the main sewer line

A

Storm Drain

116
Q

Problem of storm water will create a settlement of the structure cause by _______ or washing away the soil from the foundation

A

erosion

117
Q

Problem of storm water will subject the basement floor and walls to unnecessary _________ and possible leakage

A

ground water pressure

118
Q

Problem of rundown water may create walls and window _____

A

leakage

119
Q

Problem with water coming from roof may _______ water on people passing by or approaching entry door

A

spill

120
Q

Problem with water coming from the roof will ____ the surrounding grounds and cause disfiguring of the landscape areas

A

Erode

121
Q

The trend is to provide a _______, to serve not only the commercial and industrial establisments, but also residential houses in disposing off storm water

A

storm sewer line

122
Q

Is a collector of water coming down from the downspout leading the accumulated water away from the house at a relatively low rate of flow

A

Splash pan

123
Q

3 classification of storm drain

A
  1. The Inside storm drain
  2. Outside storm drain
  3. Overhead storm drain
124
Q

Is sometimes located under the basement floor or within walls of the building

A

Inside storm drain

125
Q

This type of storm drain is commonly found in buildings constructed along congested business district, or building that occupies the entire frontage of the lot.

A

Inside storm drain

126
Q

Is installed outside the foundation wall of the building.

A

Outside Storm Drain

127
Q

This type of drainage is possible on location where the lot is not totally occupied by the building.

A

Outside storm drain

128
Q

Is adopted when the street drainage is higher in elevation that the basement floor of the building

A

Overhead storm drain

129
Q

The pipe is well fitted and suspended inside the ceiling by suitable hangers spaced at closer intervals

A

Overhead storm drain

130
Q

The size of storm drain is determined by gauging the rainfall over a given period, whether it is constant or exceedingly heavy shower of ___

A

short duration

131
Q

Water drain faster on a _____ roof, thus required a larger drainage pipe than that of a flat roof

A

high pitch

132
Q

The _____ of the building contribute largely to the velocity of water falling inside a vertical pipe conductor

A

height

133
Q

The use of _______ will affect the flow of water

A

improper fittings and short offsets

134
Q

The conservative estimate of maximum rainfall in the Philippines is about _______ interval

A

20mm in a 5 minutes

135
Q

A combination of ____ fitting is appropriate for any change in direction

A

Y and 1/8 bend or long radius

136
Q

Is popularly known as water conductor or downspout either concealed or exposed type

A

Roof Leader

137
Q

Is a device scientifically designed to prevent the back flow of gases coming from the septic tank or sewer line passing through the outlet of the fixture

A

Trap

138
Q

These gases are identified as _________ considered dangerous to human health

A

Hydrogen
Hydrogen Sulfide
Methane
Carbon Dioxide
Carbon Monoxide

139
Q

The basic function of the trap in a drainage system is to prevent those ____ from entering the plumbing system

A

objectionable gases

140
Q

Tests of traps showed that, the most practical form ever developed is the

A

P-Trap

141
Q

Originally, this P-trap was called ______ attributed to its form like the neck of a goose

A

Gooseneck

142
Q

The column of water that is retained between the overflow and the dip of the trap is called

A

Trap Seal

143
Q

Trap Seal is sometimes referred to as

A

Water Seal

144
Q

Water sealed P-trap is classified into two

A

The common seal
The deep seal

145
Q

It has 5 cm deep water seal between the overflow and the dip, that will offer resistance against abnormal conditions, only to the amount of pressure a 5cm water will develop

A

Common Seal P-trap

146
Q

Has from 7.5 to 10 cm column of liquid content between the overflow and the dip

A

Deep Seal P-Trap

147
Q

This trap may be used under normal condition, but it is purposely design for abnormal conditions

A

Deep Seal P-Trap

148
Q

Deep Seal P-trap is designed for abnormal situations such as

A

a. Extreme heat condition in the area
b. Increase and decrease of atmospheric condition
c. Circumstances where total ventilation cannot be obtained

149
Q

One advantage of the Deep Seal over the Common Seal is its

A

Greater resealing quality

150
Q

Is a term used to the scientific principle that water at rest tends to seek a level and maintain it

A

Re-seal

151
Q

When the liquid content of a deep seal is disturbed, the water tends to ______ sufficiently to seal the trap even partially.

A

level itself

152
Q

The P-trap is the most common and practical shape available in various sizes from _______

A

32mm to 50mm diameter

153
Q

P-trap (32-50mm diameter) are used for these fixtures

A
  1. Lavatories
  2. Sinks
  3. Shower bath with less amounth of water discharge
  4. Urinals
  5. Drinking fountain
154
Q

Various forms of water sealed trap classification

A

Permissible Traps
Objectionable Traps

155
Q

Types of Permissible Traps

A

Stand trap
High Hub trap
Low Hub
Extra Heavy Type
Brass trap
Sink or Lavatory Type

156
Q

The Permissible Type of Traps

A

P-trap
Drum-Trap

157
Q

Objectionable traps that are found defective

A
  1. The full size S and the 3/4 S traps
  2. The bag traps
    c. Mechanically sealed traps
  3. Light Metal partition traps
158
Q

All traps shall be ____. That is, capable of being completely flushed each time the trap operates and no sediments will remain inside to decompose

A

self-cleaning

159
Q

P-trap shall be installed as near the fixture as practical not to require ______ between the trap and the fixture proper

A

too long vertical leg

160
Q

It eliminates high velocity of water discharge that creates siphone, the major cause of trap seal loss

A

Short vertical leg

161
Q

P-trap shall be installed within _____ of fixture it serve.

A

60 cm

162
Q

P-trap shall be acceddible for cleaning through the botton opening closed by a

A

screw plug

163
Q

All traps are subject to stoppage, hence, shall be provided with ____ so designed that could be assembled and disassembled with little efforts

A

cleanout

164
Q

Could be used only near the drain of the floor area or yarn

A

Long Run Horizontal Pipe

165
Q

Long Run Horizontal pipe is also called ____ not provided with hand-hole cleanout

A

Running Trap

166
Q

The dip portion of the trap shall be as short as possible to avoid

A

retarded flow of water

167
Q

The horizontal leg connection to the waste pipe shall be reasonably short for _____

A

effective ventilation

168
Q

___ from fixture shall be connected to the inlet side of the trap

A

Overflow pipe

169
Q

Two laundry trays and a kitchen sink connected to a

A

single trap

170
Q

Not more than ____ using one trap

A

3 laundry tray

171
Q

_____ on a single trap

A

3 lavatories

172
Q

Is also classified as water seal device, name was derived from its size being large in diameter

A

Drum Trap

173
Q

Drum trap is intented for fixtures that are set on the floor like

A

Bathtub
Foot and sitz bath

174
Q

Drum trap is used on fixtures that discharges substantial amount of water, effective where _______ is more prevalent due to the velocity of the flow in short interval

A

trap-seal loss

175
Q

Drum trap can also serve as terminal for ____ and any type of indirect waster

A

soda fountain
bar wastes

176
Q

2 types of drum trap

A

100mm x 125mm
100mm x 200mm

177
Q

Advantage of drum trap where greater amount of water may pass through it in a short interval without the danger of

A

trap seal loss

178
Q

It has a higher resealing quality than the P-trap

A

Drum trap

179
Q

Disadvantages of drum trap

A
  1. It is large and cumbersome
  2. It is unsightly if the installation is exposed to view
  3. Cleanout cover mechanism is above the water seal
  4. To clean the drum trap needs lubricant and a fiber washer at the joint between the cover and the body of the trap
180
Q

Each fixture shall be separately trapped by a water sealed trap placed as possible to the fixture except that a set of similar fixture consisting of not more than 3 wash basins

A

Traps where required

181
Q

Like fixtures in residential houses, apartment and private bathroom of hotels and similar installation

A

Class 1 - For Private Use

182
Q

Applied to fixtures in office buildings, factories, dormitories ang the like, for occupant’s use only

A

Class 2 - For Semi-Public Use

183
Q

such as schools, gymnasiums, hotels, railroad and bus terminals, public comfort rooms, and other installation where several fixtures are installed for unrestricted use

A

Class 3 - For Public Use

184
Q

Continued discharge of greasy wastes reduces the

A

diameter of the pipe

ACE 2 ENGINEERING UTILITIES (2 decks)

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