Extras 2

Question 1

What is anodizing ?

Answer 1

Corroding natural aluminum in warm bath of sulphuric acid to produce a thin coating of aluminum oxide

Question 2

Name some materials that can be used as a Vapor retarder

Answer 2

-Aluminum Foil
- polyethylene plastic sheet 4 or 6mil
- asphalt coated craft paper
- Vapour retarder paints
- most sheet type monolithic roofing membranes

Question 3

A foundation must satisfy what three general requirements?

Answer 3

• the foundation including the underlying soil and rock must be sufficient to support the weight and loads of the building absorb
• must not settle in such a way as to damage structure
• must be technically and economically feasible and practical to build without adverse effects on surrounding property

Question 4

What are three ways air filtrates into or our of building ?

Answer 4

1) Orifice Flow - through cracks, gaps etc
2) Diffuse Flow - happens slowly through the materials themselves due to permeability
3) channel flow - most severe . The entry and exit locations of the air are separated such that the air cools as it travels through the assembly

Question 5

What is Noise Reduction Coefficient?

Answer 5

Number rating represents how much sound is absorbed by a material

Question 6

What is CAC

Answer 6

Ceiling attenuation class

Measure for rating a ceiling system for barrier to airborne sound

Question 7

What is IIC?

Answer 7

Impact insulation class

Measures impact vibrations which travel through a floor assembly into the room below .

Higher = better

Question 8

What are some products used in fire stop systems ?

Answer 8

Mineral wool
Intumescent sealing or paint
Silicone
Acrylic sealant
Spray applied fire proofing
Mortar
Foam
Collars