Eng Utilities 2 Plumbing Module 7 & 8

Front 1

Water is a Combination of two elementary substances. What are these?

Back 1

hydrogen and oxygen

Front 2

Liquid is __ times heavier than air

Back 2

840

Front 3

vapor or steam 133 times ligther than air

Back 3

Gas

Front 4

SOURCES OF WATER

Back 4

1. Rainfall

2. Natural Surface

3. Underground Surface

Front 5

Particles that are suspended in the water are allowed to stay in a container so that they will settle in the bottom, then drawing the water out, leaving these sediments in the container.

Back 5

1. Sedimentation

Front 6

water are given chemical treatments to kill the harmful bacteria present and to cure the turbid taste or mud taste, remove clay, slats, iron, etc. Commonly used chemical is chlorine.

Back 6

2. Chemical Treatments

Front 7

water is filtered on various processes, so as to remove the particles of vegetable matter, mud, and other particles of matter present in the water, most commonly used materials are sand and gravel.

Back 7

3. Filtration

Front 8

raw water is made to pass on pipes of tiny sieves and exposed to air of fine mist.

Back 8

4. Aeration

Front 9

Methods of Purification and Treatment of Water

Back 9

1. Sedimentation

2. Chemical Treatments

3. Filtration

4. Aeration

Front 10

Wells that are excavated by hand are called.

For shallow water

Back 10

dug wells

Front 11

Wells that are sunk by machine are called

Back 11

Deep wells

Front 12

a well 0.90 to 6.00 meter in diameter dug through soft upper soil. The sides may be of masonry or concrete to prevent from caving-in. It is necessary that the well should be impervious to a depth of at least 3.00 meters.

Back 12

Dug Wells

Front 13

it is constructed using either hand or power driven earth auger. A well casing is lowered to the bottom of the hole. Cement grout is poured into the gap between the hole and the casing to prevent contamination.

Back 13

Bored Well

Front 14

it is done by forcing into the earth a 60 to 90 cm long piece of perforated steel tube attached to a pointed screen called a “drive point”

Back 14

Driven Well

Front 15

A drilling rig is used to drill the well hole and then casing pipe is forced down the hole to prevent it from caving in. When a water bearing stratum of sufficient capacity is found, a well screen is set in place to permit the water to flow into the casing and to hold back the fine material.

Back 15

Drilled Well

Front 16

The depth of drilled well is limited only by the distance one must dig to obtain an adequate supply of fresh water, even down to 450 meters (equivalent to a 130 storey building).

Back 16

Truck Mounted Drilling Machine

Front 17

Types of Wells According to The Method of Construction:

Back 17

1. Dug well

2. Bored Well

3. Driven Well

4. Drilled Well

5. Truck Mounted Drilling Machine

6. Drilled Well by Jetting

Front 18

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

Back 18

PUMPS

Front 19

consist of a piston travelling up and down within a cylinder which is connected with a pipe extending down into the source.

Back 19

Lift pump

Front 20

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

Back 20

Force Pump

Front 21

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

Back 21

Reciprocating Pump

Front 22

Valve functions:

Back 22

1. Stopping and starting fluid flow 2. Varying the amount of fluid flow 3. Controlling the direction of fluid flow 4. Regulating downstream system

Front 23

consists of a wedge–shaped plug which is screwed down to seat between two brass rings surrounding the inlet pipe so that a double seal is obtained.

Back 23

Gate valve

Front 24

are operated by screwing down a disk with soft packing until it presses tightly upon a metal seat.

Back 24

Globe Valve

Front 25

are used when it is desired that the flow through a pipe be always in one direction and there is a possibility of a flow taking place in the opposite direction.

Back 25

Check Valve

Front 26

has a pivoted flap which is readily pushed open by the pressure of water from one side but is tightly closed by the force of a reverse flow.

Back 26

Swing Check Valve

Front 27

consist of a loose disk which closes by gravity when the pressures on both sides are equal.

Back 27

Horizontal or Lift Check Valve

Front 28

changes the direction of the flow of water as well as control it. Acts somewhat like globe valve but are usually used for a right angle turn.

Back 28

Angle Valve

Front 29

It refers to the public water system laid underground along the streets where house service is connected.

Back 29

WATER MAIN

Front 30

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

Back 30

Gooseneck

Front 31

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

Back 31

Corporation Cock

Front 32

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 distribution by pneumatic or gravity means.

Back 32

Tanks

Front 33

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

Back 33

Upfeed System

Front 34

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

Back 34

Pneumatic Tank

Front 35

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

Back 35

Downfeed System

Front 36

Three ways of Water Distribution

Back 36

1. Upfeed System

2. Pneumatic Tank

3. Downfeed System

Front 37

Include the equipment required for the joining of the various lengths of pipe, such as couplings for connections in a straight line, elbows for connections at 90° or 45°; Tees for 45° or 90° branches from one side, and crosses for 90° branches opposite each other

Back 37

Pipe Fittings

Front 38

This is one of the essential requirements a domestic hot water system. It should be strong to resist the high pressure of boiling water stored in it.

Back 38

HOT WATER TANK

Front 39

small hot water tank. It is made of galvanized sheet, steel or copper, built into cylinder shape with concave ends either welded or riveted. The range boiler varies in size from 0.30 to 0.60 meter in diameter with a length of not more than 1.80 meters.

Back 39

Range Boiler

Front 40

large hot water tank. It is made of heavy duty metal sheets with rust proof paint. The size also varies 0.60 to 1.30 meters diameter and its length is up to 5.00 meters long.

Back 40

Storage Tank