Building Envelope

Question 1

Name three ways that heat may be transferred.

Answer 1

• Conduction
• Convection
• Radiation

Question 2

Heat loss through walls is primarily by which method?

Answer 2

Conduction

Question 3

How can heat loss through walls be minimized?

Answer 3

Insulating stud cavities and applying rigid insulation to the exterior of the wall and placing studs further apart

Question 4

How can convection heat loss through the floor frame be reduced?

Answer 4

Use caulking or a foam sill gasket between the top of the foundation wall and the floor joist to seal any gaps

Question 5

By what method is heat lost through concrete foundations?

Answer 5

Conduction

Question 6

Name the two types of polystyrene insulation?

Answer 6

• Extruded polystyrene

- Expanded polystyrene

Question 7

Which type of polystyrene is best suited for below grade use?

Answer 7

Extruded polystyrene

Question 8

What system is used to judge a walls ability to resist the passage of sound?

Answer 8

(STC) Sound transmission class

Question 9

What is the dew point?

Answer 9

The temperature at which the condensation occurs