L2_WATER SUPPLY EQUIPMENT

Question 1

used whenever the water supply at its natural pressure cannot be directly piped to a building, tank or reservoir

Answer 1

Pumps

Question 2

3 classes of pumps

Answer 2

a. Lifting water by suction to the level of a pump situated above the source.
b. Raising the water by forcing it to an elevation above a pump situated in the source.
c. Both lifting the water to the pump by suction and in addition forcing the water to an elevation above the pump.

Question 3

Consist of a piston traveling up and
down within a cylinder

Answer 3

LIFT PUMP

Question 4

used to deliver water at a point
higher than the position of the
pump itself.

Answer 4

FORCE PUMP

Question 5

class of pumps in which the piston moves· to and from either horizontally or vertically.

Answer 5

RECIPROCATING PUMP

Question 6

Types of reciprocating pump

Answer 6

1. Power pump
2. Direct Acting

Question 7

• Known as double or single acting
piston pumps. Adapted to all
purposes where the suction lift,
is not over 22 ft. (6. 70 mts) at
sea level.

Answer 7

Horizontal Reciprocating Pumps

Question 8

for suction lifts of less than 22
feet (6. 70 mts) are composed of
3 vertical cylinders placed side
by side

Answer 8

Vertical Reciprocating Pump

Question 9

used when the water level of the source is more than 22 feet (6. 70 mts) below the ground

Answer 9

DEEP WELL PLUNGER PUMP

Question 10

posses moving parts without valves, revolving around an axis and centrifugal action is utilized in delivering the water under pressure

Answer 10

CENTRIFUGAL PUMP

Question 11

automatic and require no motor since they depend for operation upon water hammer that is the surging back and forth in a pipe when suddenly brought to rest

Answer 11

HYDRAULIC RAMS

Question 12

e collection of water without consideration
of pressure, or for storing water under air pressure or under a static HEAD for future distribution by pneumatic or gravity means.

Answer 12

TANKS

Question 13

Materials used for tanks

Answer 13

• wood
• steel
• Galvanized iron (G.I.)
• Reinforced concrete
• polyvinyl chloride(PVC)

Question 14

vertical distance from the source to the outlet

Answer 14

Head of water

Question 15

large enough to contain at least one days’ supply for the entire building in
case the City main is temporarily shut off.

Answer 15

Suction Tank

Question 16

normal water pressure from public water main for low rise buildings.

Answer 16

UPFEED SYSTEM

Question 17

air pressure from suction tank for tall buildings which cannot be reached by normal water pressure

Answer 17

PNEUMATIC TANK

Question 18

operates the pump to make up this water when the level has become low enough to actuate the starting switch.

Answer 18

FLOAT VALVE

Question 19

by gravity from overhead tanks and
are supported either by structural
frames or on the roof decks. Fixtures
are below the gravity Tank.

Answer 19

DOWNFEED SYSTEM

Question 20

The pipe from the public water main or source of water supply to the building served

Answer 20

HOUSE SERVICE or SERVICE PIPE

Question 21

vertical supply pipe which extends upward from one floor to the next

Answer 21

RISER

Question 22

horizontal pipes that serves the faucets or fixtures

Answer 22

BRANCHES

Question 23

public water system laid underground along
the streets where house service is connected

Answer 23

WATER MAIN

Question 24

one end is 0.30 and the other end is 0.90 long this prevent the pipe from snapping when the soil settles

Answer 24

GOOSENECK

Question 25

stop valve placed in a service pipe close to its connection with a water main.

Answer 25

CORPORATION COCK

Question 26

Plastic Pipes

Answer 26

1. Polybutylene or PB 2. Polyethylene or PE 3. Unplasticized Polyvinyl Chloride or uPVC 4. Polypropylene Random Copolymer or PPR

Question 27

used for HOT and COLD in-House water piping systems.

Answer 27

Polybutylene

Question 28

Used for service connections, in-house plumbing, distribution mains, sewer, waste disposal

Answer 28

Polyethylene

Question 29

mains-used for waterworks and irrigations

Answer 29

Unplasticized Polyvinyl Chloride

Question 30

withstand both hot and cold temperatures without breaking or cracking makes it the best option for cold and hot water systems.

Answer 30

Polypropylene Random Copolymer

Question 31

Used for connecting galvanized iron pipe

Answer 31

TEFLON tape

Question 32

process of circulating hot water to the plumbing fixtures by means of a mechanical device.

Answer 32

Pumping Circuit System

Question 33

small hot water tank

Answer 33

Range boiler

Question 34

- large hot water tank.

Answer 34

Storage tank

Question 35

made of galvanized sheet, steel or capper, built into cylinder shape with concave ends either welded or riveted. - 0.30 to 0.60 meter in diameter with a length of not more than 1.80 meters.

Answer 35

Range Boiler

Question 36

made of heavy duty metal sheets with rust proof paint 0.60 to 1.30 meters diameter and its length is up to 5.00 meters long

Answer 36

Storage tank

Question 37

made out of a Mild Steel subject to deposits of salts and lime corroded by alkaline and acid water when used in hot water line, it deteriorates faster

Answer 37

GALVANIZED IRON (G.I) OR STEEL PIPE

Question 38

Two types Plastic or Synthetic Pipe

Answer 38

a. Rigid type b. Flexible type

Question 39

durable and is conveniently installed in most of the plumbing needs in building which are less than 25 storey high because water usually leaks at joints due to vibration

Answer 39

CAST IRON PIPE

Question 40

Type of cast iron pipe for building installations

Answer 40

SV

Question 41

Type of cast iron pipe for underground installations this are extra heavy.

Answer 41

XV

Question 42

Made of an alloy of cast iron and silicon. It is commonly installed in chemical laboratories where acid waste are being discharged.

Answer 42

Acid Resistant Cast Iron Pipe

Question 43

made of asbestos fibers and portland cement. The thickness is twice that of standard cast iron. Most suited for embedment on concrete structures.

Answer 43

Asbestos Pipe

Question 44

Cheapest light in weight, recommended for house sewer and septic tank installation. It could take slight soil movement without danger of cracking or pulling out of its joint.

Answer 44

Bituminous Fiber Sewer Pipe

Question 45

made from clay and with a length of 0.75 meter treated with glazed compound. This is highly resistant to most acids and is well suited in underground installations working either as public or house sewer or storm in drain. Being made of clay. The physical property of this pipe is brittle. It easily cracks when laid on unstable ground or base

Answer 45

Vitrified Clay Pipe

Question 46

oldest plumbing materials. Lead is highly resistant and is very suitable to underground installation. But because it is poisonous and injurious to human health, it is never recommended to convey water for human consumption

Answer 46

Lead Pipe

Question 47

better than steel pipe for plumbing installation, because it is more resistant. to acid waste than the steel pipe

Answer 47

Galvanized Wrought Iron Pipes

Question 48

most expensive of all types of pipe. Made of an alloy of zinc and copper mixed at a proportion of 15% and 85% respectively. The brass pipe is a superior material for waste and water installation because of its smooth surface aside from its high resistance to acids.

Answer 48

Brass Pipes

Question 49

A durable material which is extremely corrosive resistant-easiest to install.

Answer 49

Copper pipe