Properties of materials

Question 1

fundamental requirements of structures (3)

Answer 1

to enclose a space, withstand forces and transmit them to the ground, load-bearing capacity of soil

Question 2

types of building loads (4)

Answer 2

the weight imposed by the building itself, weight of snow or rain, wind loads, weight of occupants and contents

Question 3

the weight imposed by the building itself, weight of snow or rain, wind loads, weight of occupants and contents are types of…

Answer 3

building loads

Question 4

to enclose a space, withstand forces and transmit them to the ground, load-bearing capacity of soil are…

Answer 4

fundamental requirements of structures

Question 5

definition of force

Answer 5

that which produces a deformation in material

Question 6

that which produces a deformation in material is known as

Answer 6

force

Question 7

What is Strength

Answer 7

The ability to resist failure or excessive Plastic deformation under stress

Question 8

The ability to resist failure or excessive Plastic deformation under stress is also Known as

Answer 8

Strength

Question 9

definition of stress

Answer 9

intensity of force

Question 10

intensity of force is known as

Answer 10

stress

Question 11

equation for calculating stress

Answer 11

stress = force(PSI or MN/M²) / area of which force acts

Question 12

stress = force(PSI or MN/M²) / area of which force acts

Answer 12

equation for calculating stress

Question 13

types of stress (3)

Answer 13

tensile = tension stress (pulling)
compressive = compression (pushing)
shear = friction/tortion

Question 14

tensile, compressive and shear are types of…

Answer 14

stress

Question 15

bending stresses are…

Answer 15

dead load on a steel beam. Top half is in compression, bottom half is in tension. Neutral zone is in shear stress.

Question 16

dead load on a steel beam is a…

Answer 16

bending stress

Question 17

properties of steel (4)

Answer 17

high strength in tension, compression, shear, bending

Question 18

deformation is…

Answer 18

consequences of application of force

Question 19

consequences of application of force is known as…

Answer 19

deformation

Question 20

high strength in tension, compression, shear and bending are properties of…

Answer 20

steel

Question 21

characteristics of deformation (2)

Answer 21

magnitude = amount
type = plastic or elastic

Question 22

plastic, elastic and magnitude are characteristics of what?

Answer 22

deformation

Question 23

definition of strain

Answer 23

strain is deformation due to stress

Question 24

Deformation due to stress is known as

Answer 24

Strain

Question 25

strain is calculated by

Answer 25

change in dimension / original dimension = strain

Question 26

change in dimension original dimension =

Answer 26

strain

Question 27

tensile and compressive strain are..

Answer 27

direct strains

Question 28

examples of direct strains (2)

Answer 28

tensile and compressive

Question 29

sheer strain is...

Answer 29

indirect strain

Question 30

indirect strain is known as...

Answer 30

sheer strain

Question 31

elastic deformation is

Answer 31

fully recoverable

Question 32

which type of deformation is fully recoverable?

Answer 32

elastic deformation

Question 33

plastic deformation is

Answer 33

permanent deformation

Question 34

which type of deformation is permanent?

Answer 34

plastic deformation

Question 35

within plastic deformation, tension has high...

Answer 35

ductility

Question 36

tension has high ductility within...

Answer 36

plastic deformation

Question 37

ductility is...

Answer 37

a solid material's ability to deform under tensile stress

Question 38

a solid material's ability to deform under tensile stress is known as...

Answer 38

ductility

Question 39

What is Stiffness

Answer 39

Ability of a material to resist elastic deformation under load

Question 40

Ability of a material to resist elastic deformation under load is Known as

Answer 40

Stiffness

Question 41

What is toughness

Answer 41

The ability of a material to absorb energy by impact or sudden blow

Question 42

The ability of a material to absorb energy by impact or sudden blow is known as

Answer 42

Toughness

Question 43

The equation used to measure stiffness is...

Answer 43

Young's Modulus (E)

Question 44

Young's Modulus is used to measure...

Answer 44

Stiffness.

Question 45

The equation for Young's Modulus is...

Answer 45

Stress (Tensile or Compressive) / Elastic Strain

Question 46

Stress (Tensile or Compressive) / Elastic Strain is the equation for

Answer 46

Young's Modulus.

Question 47

Material Stiffness can be referred to as....

Answer 47

Young's Modulus

Question 48

Young's Modulus can also be referred to as

Answer 48

Material stiffness.

Question 49

Component Stiffness...

Answer 49

is governed by shape of component and distribution of material

Question 50

The shape of a component and the distribution of material leads to...

Answer 50

Component Stiffness.

Question 51

Lateral supports e.g.Herringbone Struts prevent...

Answer 51

twist and shear stress, resulting in a reduced risk for cracked ceilings.

Question 52

The lateral supports which reduce the twists and shear stresses are...

Answer 52

Herringbone Struts.

Question 53

The components of a steel I beam are (2)

Answer 53

Flange (Top & Bottom) Web (Middle)

Question 54

Flange (Top & Bottom) Web (Middle) are components in...

Answer 54

Steel I beams.

Question 55

What is Hardness

Answer 55

Resistance to Indentation under Stress

Question 56

Resistance to Indentation under Stress is known as

Answer 56

Hardness

Question 57

What are the long term mechanical properties (2)

Answer 57

Creep & Fatigue

Question 58

Creep & Fatigue are characteristics of....

Answer 58

Long term mechanical properties.

Question 59

What is Creep

Answer 59

The effect of long term Stress, leading to additional distortion or failure

Question 60

The effect of long term Stress, leading to additional distortion or failure is known as

Answer 60

Creep.

Question 61

What is Fatigue

Answer 61

The effect of load reversals such as vibrations which lead to failure at relatively low stress.

Question 62

The effect of load reversals such as vibrations which lead to failure at relatively low stress.

Answer 62

Fatigue

Question 63

Dimensional changes can by produced by... (2)

Answer 63

changes in moisture content, changes in temperature.

Question 64

changes in moisture content &changes in temperature can result in....

Answer 64

Dimensional Changes.