Flashcards
Science and Materials Flash Cards
Cards in this deck (37)
- 1What are the 5 Stages in the lifecycle of a building?1 - Design
2 - Construction
3 - Maintenance
4 - Repair
5 - Demolition - 2What type of stress is caused by twisting?Torsion
- 3What is the standard size of a brick?215mm x 102.5mm x 62.5mm
- 4What are three types of brick deterioration?Frost
Sulphur / Acid Rain
Eflorescence - 5What is the calculation for Moisture Content?MC = (Wet Weight - Dry Weight /
Dry Weight) *100 - 6What are the THREE properties of structural stability?1- Strength
2 - Stiffness
3 - Toughness - 7Steel TRUE OR FALSE Hardness increases with Carbon contentTRUE
- 8Steel TRUE OR FALSE Reducing carbon content reduces the ease of weldingTRUE
- 9Ease of casting increases as carbon content increasesFALSE
- 10Increasing Carbon content increases ductilityFALSE
- 11Steel TRUE OR FALSE The addition of steel reduces machinabilityTRUE
- 12What is the typical Carbon content range of structural steel?0.16% - 0.25%
- 13Define the Fibre Saturation point for timber productsThis is the point where only the water within the cells is left.
The rest of the 'Free Water' has been removed. - 14Name three types of crystal forms associated with iron and carbonFerrite
Pearlite
Cementite
Austenite
Martensite - 15Which Iron cannot be worked hot due it being brittle? Wrought Iron Cast Iron Grey Iron Pig IronCast Iron
- 16Name four limitations of timber products for use in constructionRot
Natural Defects
Movement and Distortion
Can be subject to creep
Cost - 17What is a U Value and what is it's SI unit?A measure of heat transfer through a material.
Watts / M^2 ( Metre Squared) / Degrees C - 18What is Hardness?A materials resistance to deform under load.
- 19What is Engineering Stress?The Load divided by the cross-sectional area.
- 20What does Oxygen do in Basic Oxygen Steel Making?Produces Iron Oxide
Enables CO2 to be made - 21How do you calculate Heat Loss?Temp Dif x Area x U - Value
- 22What are the four factors of Embodied EnergyExtraction
Manufacture
Transportation
Cost In Use - 23What is the standard size of a concrete block?440mm x 215mm x 100mm
- 24What is a Thermal Property?The characteristics of a material that determines how it reacts when it is subjected to excessive heat or heat fluctuations over time.
- 25Name the three types of Heat TransferRadiation
Conduction
Convection - 26What is Work Done?The measure of Force against distance and its direction.
- 27Which part of the building has the greatest Heat Loss?The Outside Walls of a building
- 28What properties should Thermal Insulation have? (List 3 types)1 - Strength and Rigidity
2 - Moisture Resistance
3 - Fire Resistance
4 - Rot Resistance
5 - compatible with other materials
6 - Harmless to humans - 29What is the Conductivity Quotient?A measure of insulation properties.
- 30What is Emissivity?The ability to emit energy by radiation from the surface.
- 31Name three of the eight Performance Criteria for a building1 - Structural Safety
2 - Fire
3 - Durability
4 - Health and Safety
5 - Comfort
6 - Appearance
7 - Availability / Cost
8 - Sustainability - 32Name three types of Primary Bonding1 - Covalent
2 - Ionic
3 - Metallic - 33Name two types of Secondary Bonding1 - Van der Waals
2 - Hydrogen Bonding - 34What is the definition of Stress?A measure of force applied to an area.
- 35What is the definition of Strain?A measure of deformation caused by stress.
- 36Name the components of woodBark
Bast
Combium Layer
Hartwood
Pith - 37What are the three production methods for