Metals in Construction

• Civil Engineering
• Foundation Degree

Metals in Construction

Quickfire Quiz 1

What is the term used to describe a metal's ability to be stretched or drawn into wires without breaking?

1. Brittleness
2. Hardness
3. Ductility
4. Toughness

What is the property that allows metals to be flattened or compressed into thin sheets?

1. Elasticity
2. Malleability
3. Strength
4. Hardness

True or false: Metals are excellent conductors of both electricity and heat.

1. True
2. False

In the context of metals, what does the term "lustre" refer to?

1. Colour
2. Shiny, reflective appearance when polished
3. Ability to conduct electricity
4. Resistance to heat

Name a metal that is widely used in electrical wiring due to its excellent electrical conductivity.

1. Copper
2. Brass
3. Aluminium
4. Lead

Metals in Construction

Quickfire Quiz 2

What is the term for the regular arrangement of atoms in a metal?

1. Atomic Huddle
2. Atomic Order
3. Crystal Lattice
4. Crystal Meth

Name the three most common crystal structures in metals.

1. HCP, FCC, BCC
2. ABC, XYZ, DEF
3. GHI, JKL, MNO
4. 123, 456, 789

Which crystal structure has the lowest atomic packing factor?

1. BCC
2. FCC
3. HCP
4. DEF

How do dislocations affect the properties of metals?

1. They make metals ductile.
2. They increase metals' toughness.
3. They improve metals' electrical conductivity.
4. They have no effect on metals.

Increasing the number of dislocations in a metal increases its ductility

1. True
2. False

Which type of dislocation involves an extra half plane of atoms in the lattice?

1. Screw Dislocation
2. Linear Dislocation
3. Edge Dislocation
4. Point Dislocation

How does controlling grain size strengthen a metal?

1. By adding more alloying elements
2. By increasing temperature during manufacturing
3. By making the grains larger
4. By making the grains smaller

Apart from crystal structure, what else affects the density of a metal?

1. The shape of the atoms
2. Atomic number of the atoms
3. Number of electrons within the atoms
4. Atomic weight of the atoms

Metals in Construction

Quickfire Quiz 3

A measure of a material's resistance to deformation

1. Strength
2. Stiffness
3. Hardness
4. Toughness

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

1. Strength
2. Fatigue Resistance
3. Hardness
4. Toughness

A material's resistance to abrasion or indentation

1. Strength
2. Fatigue Resistance
3. Hardness
4. Creep Resistance

How well a material can endure repeated loading and unloading cycles without failing

1. Strength
2. Fatigue Resistance
3. Ductility
4. Creep Resistance

A material's resistance to long-term deformation under a permanent load

1. Strength
2. Fatigue Resistance
3. Ductility
4. Creep Resistance

Metals in Construction

Quickfire Quiz 4

A steel spring has a stiffness of 0.01N/mm, under a load of 0.4N. Calculate the extension of the spring?

1. 0.025 mm
2. 0.04 mm
3. 4 mm
4. 40 mm

A steel tie with a cross-section measuring 0.025m x 0.025m is subjected to an axial pull of 100,000N. Calculate the normal tensile stress.

1. 62.5x10^-9 N/m^2
2. 62.5 N/m^2
3. 160 N/m^2
4. 160x10^6 N/m^2

If under this stress, the 2m long tie extended by 3mm, what is the strain?

1. 0.0015
2. 0.0015N/m
3. 6000
4. 6000N/m

Determine Young's modulus in N/m^2 for this steel tie, with a stress of 160x10^6 N/m^2 and a strain of 0.0015.

1. 240,000 N/m^2
2. 240,000 m.N
3. 106x10^9 N/m^2
4. 106x10^9 m.N