Plumbing Design and Estimate by Fajardo - Water Supply

Question 1

Pure or uncontaminated water is not found in nature. Water in the form of rain, absorbs dust and gases of carbon dioxide and oxygen. Similarly, water in the ground is exposed to pollution by organic matter, including animal and human wastes.

What are the common Impurties in Water (4)

Answer 1

Entrained Gases

Dissolved Minerals

Suspended and Colloidal Materials

Radioactive Materials

Question 2

____ are carbon dioxide, hydrogen sulfide, methane, oxygen and nitrougenous and organic compounds.

Answer 2

Entrained Gas

Question 3

______ are calcium, magnesium sodium, iron and manganese and other carbonates and silicates, alkyl benzene sulfate from detergents and synthetic organic from insecticides and pesticides.

Answer 3

Dissolved Minerals

Question 4

_____ such as bacteria, algae, fungi, silt, protozoa and other colloidal matters making the water colored and acidic.

Answer 4

Suspended and Colloidal Materials

Question 5

______ by entrainment of radioactive substances from mining or processing ores, by wastes from industrial use of radio active materials.

Answer 5

Radio Active Materials

Question 6

Among the minerals present in water through artificial means is ____. ____ pipe should not be used for distribution of soft acid water, or for water having a high concentration of dissolved oxygen or chlorides. THe solution of lead and water with such characteristics may cause Lead Poisoning.

Answer 6

Lead; Lead Pipe

Question 7

Wells that are supplying water for public use should be located at a minimum distance of _______ meters radius from residential areas.

All residents within this zone limit shall be strictly required to have sanitary sewage facilities.

Answer 7

100 meters

Question 8

There should be no concrete sanitary sewers existing with the ______ meters radius of the well.

Answer 8

15 meters

Question 9

No outdoor privy, cesspools, septic tank or drain field, shall be located within _____ meters radius from the well.

Question 10

The area shall be _____ to divert surface water from the well, and to minimize the possibility of flooding.

Question 11

All abandoned wells near the site chosen for a new well, should be ____ and _____ to prevent possible contamination of the ground water formation.

Answer 11

plugged and properly sealed

Question 12

____ is nothing more than a very shallow well with water, taken from a water stratum composed of cervical limestone, sand or gravel lying a few meters below the earth

Answer 12

Spring Water

Question 13

The fissure wherein the spring water will flow, should be enclosed completely with a ______ or other impervious materials.

Answer 13

Reservoir of concrete, tile or steel

Question 14

Different Types of Individual Well Spring (4)

Answer 14

Dug Wells

Bored Wells

Driven Wells

Drilled WElls

Question 15

Frequent ______ tests of the water delivered shall be conducted, and the results must strictly comply with the health standard requirements at all times.

Answer 15

Bacteriological Tests

Question 16

A complete chemical analysis for each type of water sold, shall be made at least _____.

Answer 16

twice a year

Question 17

Labelling the Container as to the type of water either: (3)

Answer 17

Distilled

Demineralized

Spring

Question 18

The safety and quality of the water should not be impaired by defects in the system. It should be provided with sufficient ____ and _____ to allow repair work without undue interruption of service to some areas, and to allow the flushing of the system.

Answer 18

Valves and Blow off

Question 19

There should be no unprotected reservoir, or ____ with inferior water system to enter the distribution system.

Answer 19

Cross Connection

Question 20

The water system should be tight against leakage. The main and branches connection should no be _____ in surface water, or subjected to any sourch of contamination.

Answer 20

Submerged

Question 21

The water system design, shall afford effective circulation of water with minimum number of ______.

Answer 21

Dead Ends

Question 22

When new main are installed, or old mains repaired, they should be filled with strong chlorine solution of _______ for at least 24 hours, and then flushed with water supplied normally from the main.

Answer 22

40 to 60 mg per liter for at least 24 hours

Question 23

As much as possible, water main should be laid above the elevation of concrete sanitary sewers, or crossover points, and at least _______ from such sanitary sewer when they are parallel. Should this be impossible for some reasons, the sewer main must be ______.

Answer 23

at least 3 meters horizontally; encased in concrete.

Question 24

Public Water Distribution is classified into:

Answer 24

1. DIrect Pressure Distribution
2. Indirect Pressure Distribution

Question 25

This type of water distribution. obtain its supply of water through a large intake pipe, installed in the lake basin extended down the water. Water is drawn from the lake, to a receiving well by force of gravity, passing through the filtration plant. The water inside the reservoir is pumped by a _______ pump into the water main with sufficient pressure to serve specific needs.

Answer 25

Direct Pressure Distribution

Question 26

_____ is when the water drawn from a drilled distribution is done by indirect pressure. For this type, a ___ pump is empoyed mounted on top of the standpipe extended down the well below the water table.

Answer 26

Indirect Pressure Distribution

Question 27

____ refers to the pipe connection from the public water main or any source of water supply to the building served.

Answer 27

House Service

Question 28

Refers to the vertical supply pipe which extend upward from one floor to the next

Answer 28

Riser

Question 29

_____ are horizontal pipes that serve the faucets or fixtures.

Answer 29

Branches

Question 30

Illustrate the Water Supply Service Connection

Question 31

____ refers to the public water connection which are laid underground along the streets where the house service is connected.

Answer 31

Water Main

Question 32

The water service pipe is connected or tapped to the water main by personnel of the waterworks authority only. The connection is made with a special tapping device accomplished without necessarily shutting of the city or municipal water supply. Tapping of water supply service requires the use of ______. (4)

Answer 32

Corporation Cock, Curb cock, meter stop, water meter

Question 33

Cold water distribution in Building is classified into three types:

Answer 33

Normal water pressure from the public main

By Overhead Feed System

By air pressure distribution system

Question 34

Illustrate Overhead Feed Water System

Question 35

The ________ system supplies water to the plumbing fixtures by means of gravity. The water is pumped to a large tank on top of the building and distributed the water to the different fixtures. This type of water distribution is one of the oldest types.

Answer 35

Overhead Feed System

Question 36

The ________ system is a new concept in water distribution where compressed air is used as the delivery agent. This type of water distribution is fast superseding hte other types.

Answer 36

Air Pressured Water Distribution System

Question 37

There are four mechanical devices used in air pressurizrd water supply system.

Answer 37

Large storage tank with all tapping required

Single or Duplex Centrifugal Pump

Air Compressor

Automatic Pressure Control Switch

Question 38

For small unit water supply installations, a ____ pump is generally used.

Answer 38

Piston