unit 4 assignment 1 science and materials
Unit 4: Science and materials in construction and the built in environment
Assignment 1: Construction materials
P1) Describe the basic factors in simple scientific terms that influences human comfort in the internal environment
• Air temperature – Heat too hot too cold
• Lighting – Too dim not enough daylight
• Noise – Discomfort of hearing
• Air quality – Too stuffy, ventilation
P2) Describe how each factor is measured
• Air temperature – Celsius Acceptable level 33 C
• Lighting – Lux Acceptable level 100 (lx) Colour rendition (80 lx is considered acceptable for residential applications)
• Noise – Db Acceptable level 65 Db
• Air quality – Humidity is measured in terms of relative and is expressed in a percentage of 100%, Acceptable level 50% (for comfort Relative Humidity 40 to 70 %)
P3) Describe acceptable values for each factor
Sketch on separate paper
M1) Produce clearly worked, accurate answers for three different calculations relating to human comfort in internal environment
Answer on separate paper
D1) Analyse, in qualities, terms, the basic factors that affect human comfort
Impact on design of buildings:
• Solar heat gain
• Heat loss
• Ventilation
• Too bright
• Glare
• Cleaning and maintenance
• Privacy
An older building can be upgraded if structurally viable to minimise the issues such as:
• Poor natural light
• Reliance on artificial light
• Poor ventilation
• Difficult to maintain heat
• Little or no sound design considerations
There are 4 physical factors that affect the thermal comfort
• Air temperature
• Mean radiant temperature
• Air movement
• Humidity
HEAT (H) is a form of energy, the SI unit is Joule (J) Joule is used for measuring any other form of energy. Other units of energy still found in use include: calorie, where 1 cal = 4.187 J (measure of primary heat energy content of a fuel in joules per kg or m³)
Kilowatt hour, where 1 kWh = 3.6 MJ
BTU - British Thermal Unit, where 1 BTU =
Assignment 1: Construction materials
P1) Describe the basic factors in simple scientific terms that influences human comfort in the internal environment
• Air temperature – Heat too hot too cold
• Lighting – Too dim not enough daylight
• Noise – Discomfort of hearing
• Air quality – Too stuffy, ventilation
P2) Describe how each factor is measured
• Air temperature – Celsius Acceptable level 33 C
• Lighting – Lux Acceptable level 100 (lx) Colour rendition (80 lx is considered acceptable for residential applications)
• Noise – Db Acceptable level 65 Db
• Air quality – Humidity is measured in terms of relative and is expressed in a percentage of 100%, Acceptable level 50% (for comfort Relative Humidity 40 to 70 %)
P3) Describe acceptable values for each factor
Sketch on separate paper
M1) Produce clearly worked, accurate answers for three different calculations relating to human comfort in internal environment
Answer on separate paper
D1) Analyse, in qualities, terms, the basic factors that affect human comfort
Impact on design of buildings:
• Solar heat gain
• Heat loss
• Ventilation
• Too bright
• Glare
• Cleaning and maintenance
• Privacy
An older building can be upgraded if structurally viable to minimise the issues such as:
• Poor natural light
• Reliance on artificial light
• Poor ventilation
• Difficult to maintain heat
• Little or no sound design considerations
There are 4 physical factors that affect the thermal comfort
• Air temperature
• Mean radiant temperature
• Air movement
• Humidity
HEAT (H) is a form of energy, the SI unit is Joule (J) Joule is used for measuring any other form of energy. Other units of energy still found in use include: calorie, where 1 cal = 4.187 J (measure of primary heat energy content of a fuel in joules per kg or m³)
Kilowatt hour, where 1 kWh = 3.6 MJ
BTU - British Thermal Unit, where 1 BTU =