MOD 4: Plumbing Materials – Pipes and Fittings

Question 1

a cylindrical conduit or conductor, usually cylindrical in cross-section, of sufficient wall thickness capable of conveying or allowing the flow of liquid, gas, steam, or air through it.

Answer 1

PIPE

Question 2

Are standardized parts or components, usually prefabricated, that are used to connect sections or segments of pipes, equipment, fixtures, trims, etc.

Answer 2

FITTINGS

Question 3

The property of a metal that permits mechanical deformation by extrusion, forging, rolling, etc., without fracturing.

Answer 3

MALLEABILITY

Question 4

The resistance of a material to deformation by compression or indentation.

Answer 4

HARDNESS

Question 5

The property of a material which fractures under low stress without appreciable deformation.

Answer 5

BRITTLENESS

Question 6

Property of a material described as being capable of being stretched or deformed without fracturing.

Answer 6

DUCTILITY

Question 7

Material property which enables it to retain its appearance and integrity when exposed to the effects of the sun, wind, moisture, and changes in temperature.

Answer 7

WEATHERABILITY

Question 8

Material property that refers to its resistance to being worn down by friction when rubbed against another
object.

Answer 8

ABRASION RESISTANCE

Question 9

Resistance of a surface/material to shock or impact applied in an instant, such as the impact of being dropped
on the floor.

Answer 9

IMPACT RESISTANCE

Question 10

Property of piping materials that evaluates its durability and resistance to wearing away as a result of chemical intervention (such as rusting).

Answer 10

COROSION RESISTANCE

Question 11

The degree of which a surface can resist the degrading effects of acid, such as porcelain or enamel.

Answer 11

Acid Resistance/Chemical Resistance

Question 12

Rate of heat transfer by conduction.

Answer 12

Thermal Conductivity

Question 13

An index of material resistance to the transmission of heat.

Answer 13

Thermal Resistivity

Question 14

The capacity of a material for withstanding open flame or providing protection from fire.

Answer 14

Fire Resistance

Question 15

Ability of a piping material to withstand the effect of heat without causing deformation to the material.

Answer 15

Heat Resistance

Question 16

Resistance of a material to rupture caused by overpressure of air or liquid inside the pipe.

Answer 16

Pressure Resistance

Question 17

Material characteristic which causes resistance of liquid
flow.

Answer 17

Flow Characteristic

Question 18

Codes require that any change of direction of piping in a drainage system should have a radius of curvature large enough to prevent solids from accumulating and to provide good hydraulic flow characteristics. Fittings that satisfy these characteristics are known as

Answer 18

drainage pattern fittings or sanitary-type fittings

Question 19

a fitting used to change direction,
especially in a sanitary drainage system. Fittings are available with changes at various angles. A 1/4 bend is a 90° fitting; it is available as short _____ or long _____ (i.e. short or long radius curvature), a 1/8 bend is a 45°
fitting, and a 1/16 is a 22 1/2° fitting.

Answer 19

bend or sweep