Practical Problems 1

通報

問題一覧

Which material ultimately seals a caulked or bell and spigot joint?

Cement

What do you call the process in which all types of iron-basee metals rust?

Pit corrosion

Which pipe support is recommended in holding a single horizontal soil ir waste branch?

Trapeze

Which of these pipes is measured by its outside diameter?

Galvanized steel pipe

Pressure loss in pipe due to its interior surface is attributed to what factor?

Friction loss

Which plastic pipe is normally oval in cross section and is denoted by its outside diameter?

PP (Polypropylene)

Ventilating system is essential in sanitary drainage system. Providing such system prevents ___.

All of these

The following are types of joints used in plastic pipes. Which of these is NOT applicable?

Heat fusion joint

What is the rod used for caulking oakum?

Soldering rod

What is the science that studies water in motion?

Hydraulics

Potable water is to water supply, as wastewater is to ___.

Fire protection

Also known as the Sanitation Code of the Philippines.

RA 9003

Portion if the septic tank where retention of sludge takes place.

Holding tank

MWSS stands for

Manila Waterworks, Sewerage and Sanitation

____ is the removal of salts from saline water to provide freshwater.

Condensation

It is a natural or manmade structure for storing, regulating and controlling water.

Sewer

It is a tank used to contain domestic wastes to allow the settling of solids prior to distribution to a leach field for soil absorption. This tank is used when a sewer line is not available to carry them to a treatment plant.

Dam

What is the term applied to water which enters sewers through poor joints, cracked pipes, and the walls?

Infiltration

What are the pathogenie bacteria that can survive in natural water without protection in particular matter of other physical protection long enough to transmit disease to human beings?

Mushroom

What kind of pipe is remarkably suited to embedment in concrete structure and can be used as soil, waste or ventilation pipe and downspout?

Asbestos pipe

What is the slope of soil branch has been proven to be effective and satisfactory?

2.50%

A title given to a person who is a skilled worker in the field of plumbing. It is derived from the Ancient Roman term ‘plumbarius' which was taken from the Latin word ‘plumbum’

Architect

Its main function is to prevent reversal of flow in the line. Valves of these types are recommended for gas, water, steam, air and general vapor services.

Plug disk valve

____ is used mainly to completely close or open the line but not necessarily to control the flow of water.

Gate valve

A device used to prevent water hammering

Sump pit

It refers to the demand considered in determining the size of water service pipe when simultaneously used at the same time.

Probable demand

The connection between the city water main and the service pipe is called ____

Service pipe

The process of removing suspended water from water supply by allowing time and inactivity of water to do the work of settling out heavier suspended particles.

Oxidation

A water supply pipe that extends one full storey or more to convey water to branches or to a group of fixture.

Service pipe

A compression stop valve installed on the outside of a building so that the garden hose may be attached.

Sill cock

Existing pressure without any flow motion.

Static pressure

Island fixture requires this type of venting. What is it?

Loop vent

Which of the following is aming the types if material pipe support user for vertical application?

Clevis

What type of trap may be user on the house drain immediately before the house sewer?

S trap

Originally, Sovent System uses what type of material for its drainage, aerator and de-aerator fittings?

Galvanized iron

Sovent system is an engineered plumbing system which involves the use of

Soil and waste pipes, aerator and de-aerator

In the design of septic tank, the capacity of leaching chamber is generally

3/4 the volume of DC

What is the color for a pipeline containing gases in either gaseous or liquefied form, vapors and pneumatically conveyed fumes and materials?

Silver-grey

What specific qualities are required of a plumbing fixture?

Impervious surface

A grease interceptor may be required in any of the following EXCEPT in

Single-Family Residential dwellings

It is a copper pipe that can be used in water distribution system above and underground pipe installation.

Type M

A type of copper tube used for hot water heating and low pressure steam sizes up to 32 mm.

Type DWV

A type of copper tube used for hot water heating and low pressure steam sizes 32 mm and larger.

Type DWV

A type of copper tube used for hot water heating condensate return lines.

Type L

A type of copper tube used in underground water services with straight lengths joined with fittings.

Type L

A type of copper tube used chilled water mains sizes 32 mm and larger.

Type K

A Is the science and art of preventing disease, prolonging life and promoting physical and mental health and efficiency through organized community.

Health

Affects large number of people at the same time and transcends community boundaries.

Host

Applied to a specific disease when it normally prevails in locality and does not fluctuate markedly from the normal expected mergence in the commonly.

Epidemic

Is the incidence of a communicable disease among a number of people to an extent that is recognized statistically as being well beyond the normal expectancy for the disease in a community in a defined period of time.

Host

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