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Plumbing and Sanitary Systems > PART O1 > Flashcards

PART O1 Flashcards

1
Q

o A knocking in the pipes caused when faucets in the lower levels are shut off abruptly or automatically.
o The force exerted by the decelerating water causes the pipes to shake and rattle.

A
  • Water Hammer
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2
Q

o 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.

A
  • Back Siphonage
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3
Q

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

A

Backflow

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4
Q

o Pipes expand and contract due to continuous changes in ?

A

temperature.

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5
Q

should be provided to allow for breathing room.

A

o An air space

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6
Q

when liquid flowing through the pipe makes contact with the pipe enclosures, thus reducing the speed of water flow.

A
  • Friction Head Loss
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7
Q

o There is ? with longer pipes, small diameter pipes, and a high number of valves of fittings.

A

greater Friction Head Loss

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8
Q

o Water is obtained through a large intake installed on the lake basin & extended into deep water
o Components - water basin, receiving well, filtration plant

A
  • Direct Pressure Distribution
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9
Q

o Water is taken form a drilled well or underground water
o Involves individual special mechanical equipment

A
  • Indirect Pressure Distribution
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10
Q

o Water is taken form a drilled well or underground water
o Involves individual special mechanical equipment

A
  • Indirect Pressure Distribution
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11
Q
  1. Parts of the Cold Water Distnbution System (Potable &
    Tap)
A
  • Service Pipe
  • Water Meter
  • Horizontal Supply Main
  • Riser
  • Fixture Branch
  • Controls & Valves
  • Storage tanks
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12
Q

o pipe from the street water main or other source of water supply to the building served

A
  • Service Pipe
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13
Q

o device used to measure in liters or gallons the amount of water that passes through the water service

A
  • Water Meter
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14
Q

o the principal water distribution pipe running from the water meter from which the various branches and risers to the fixtures are taken.

A
  • Horizontal Supply Main
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15
Q

o a water supply pipe extending vertically to one full story or more to convey water into pipe branches or plumbing fixtures

A
  • Riser
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16
Q

o the water supply pipe
between the
fixture supply pipe and the water­ distributing pipe

A
  • Fixture Branch
17
Q

o used for control, isolation and repair of the water distribution system

A
  • Controls & Valves
18
Q

o Water is provided by the city water companies using normal pressure from public water main

A
  • Direct Upfeed
19
Q

o When pressure supplied by city water supply is not strong enough
o Compressed air is used to raise and push water into the system

A
  • Air Pressure System (Pneumatic)
20
Q

o Water is pumped into a large tank on top of the building and is distributed to the fixtures by means of gravity.

A
  • Downfeed (Overheadfeed) or Gravity System
21
Q

o With a continuing network of pipes to provide constant circulation of water
o Hot water rises on its own & does not need any pump for circulation
o Hot water is immediately drawn form the fixture any time
o Provided economical circulating return of unused hot water
o Larger pipe is installed at the !QQ of the riser & the diminishing sizes passes through the lower floors of the building

A
  • Upfeed and Gravity Return System
22
Q

o For a more efficient circulation of hot water to the upper floor levels of multi-storey buildings

A
  • Pump Circuit System
23
Q

o Water is confined within a system at low temperature (Types of Water Heating Systems)

A
  • Hot Water Space Heating System
24
Q

o Not a closed system which operate on much higher temperature (Types of Water Heating Systems)

A
  • Hot Water Supply System
25
Q

o Used for Hot Water Space Heating System (Protection of Hot Water Tank)

A
  • System Relief Valve
26
Q

o Used for Hot Water Supply System (Protection of Hot Water Tank)

A
  • Temperature & Pressure Relief
27
Q

o Operates in the same manner as globe valve (disc & seat design)
o Used to make a 90° turn in a line
o Reduces number of joints

A
  • Angle Valve
28
Q

a.k.a. ‘Retention Valve’
o Located at the lower end of the pumps
o Used mainly to prevent loss of priming of the pumps

A
  • Foot Valve
29
Q

Used on water systems, heating systems, compressed air lines & other pipe lines with excessive pressure.

A
  • Safety Valve
30
Q

(Spacing of Sprinkler Heads) Light Hazard Occupancy

A

20 sqm

31
Q

(Spacing of Sprinkler Heads) Extra Hazard Occuapncy

A

10 sqm

32
Q

used above piping when piping is exposed.

A

Upright

33
Q

projects through a finished ceiling when piping is exposed

A

Pendent

Plumbing and Sanitary Systems (5 decks)

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