Question 1

What does the acronym IECC stand for?

Accepted Answer

Internatio

Question 2

The F- factor relates to heat flow through

Accepted Answer

A) above- ground opaque wall. 
B) a concrete roof slab. 
C) a concrete slab- on- ground. 
D) basement wall. 
E) glazed wall. 
A) above- ground opaque wall. 
B) a concrete roof slab. 
C) a concrete slab- on- ground. 
D) basement wall. 
E) glazed wall.

Question 3

The unit for the measure of energy in the SI system of units is

Accepted Answer

A) calorie. 
B) Btu. 
C) Joule. 
D) Watt. 
A) calorie. 
B) Btu. 
C) Joule. 
D) Watt.

Question 4

A wet or moist material provides a higher R- value than if the same material is dry.

Accepted Answer

A) True 
 B)False

Question 5

A wall framed with wood or steel studs is a mass wall.

Accepted Answer

A) True 
 B)False

Question 6

In this text, we have used two quantities to specify the insulating value of a material-q- value and R- value. Explain the difference between the two.

Accepted Answer

q- value refers to the R- valu

Question 7

Explain the component trade- off method in IECC and how it differs from the prescriptive method.

Accepted Answer

In this method, a higher thermal efficie

Question 8

The units of measurement of U- value and U- factor are the same.

Accepted Answer

A) True 
 B)False

Question 9

Like color, emissivity is a property of the surface of the material, not of the entire body of the material.

Accepted Answer

A) True 
 B)False

Question 10

The R- value of a building assembly is influenced by the inside and outside air films. The sum of the R- values of these two films (Rsi + Rso)is approximately equal to

Accepted Answer

A) 10.0. 
B) 5.0. 
C) 1.0. 
D) 0.1. 
E) none of the above. 
A) 10.0. 
B) 5.0. 
C) 1.0. 
D) 0.1. 
E) none of the above.

Question 11

Determine the U- factor of the wall assembly in Question 2, which consists of 15% glazed area, and the U- value of glazing is 0.65.

Accepted Answer

To determine the U-factor of the wall as

Question 12

If one surface of a vertical air space is lined with aluminum foil, its R- value = 2.5. What will be its R- value if both surfaces of the air space are lined with aluminum foil?

Accepted Answer

There is virtually n

Question 13

Which of the following insulating materials contain HCFC gas within their voids?

Accepted Answer

A) Polyurethane 
B) Extruded polystyrene 
C) Polyisocyanurate 
D) All of the above 
E) Only B and C 
A) Polyurethane 
B) Extruded polystyrene 
C) Polyisocyanurate 
D) All of the above 
E) Only B and C

Question 14

Why do we specify LTTR value for some insulating materials?

Accepted Answer

For insulating materials that contain HC

Question 15

Apart from air and HCFC gas, which other gases are used to provide insulation?

Accepted Answer

The answer of Apart from air and HCFC gas, which...

Question 16

A wall assembly (total area = 100 ft2)consists of 80 ft2 of opaque wall with an R- value of R- 20 and a 20 ft2 of window whose R- value is R- 2. The effective (overall)R- value of the entire wall assembly is approximately

Accepted Answer

A) R- 15. 
B) R- 7. 
C) R- 11. 
D) R- 3. 
E) none of the above. 
A) R- 15. 
B) R- 7. 
C) R- 11. 
D) R- 3. 
E) none of the above.

Question 17

The R- value of a 2- in.- thick material is 4.0. What is the R- value of the same material if its thickness is 1 in.?

Accepted Answer

A) 6.0 
B) 1.0 
C) 0.5 
D) 8.0 
E) None of the above 
A) 6.0 
B) 1.0 
C) 0.5 
D) 8.0 
E) None of the above

Question 18

What is thermal bridging as it relates to building envelope design?

Accepted Answer

Thermal bridging refers to excessive hea

Question 19

What is aged R- value? To which materials does this concept apply and why?

Accepted Answer

The aged R-value refers to the thermal r

Question 20

For the same thickness, which of the following materials has the smallest R- value?

Accepted Answer

A) Gypsum 
B) Expanded polystyrene 
C) Extruded polystyrene 
D) Polyisocyanurate 
E) Fiberglass 
A) Gypsum 
B) Expanded polystyrene 
C) Extruded polystyrene 
D) Polyisocyanurate 
E) Fiberglass

Exam 5: Properties of the Envelope-I Thermal Properties

What does the acronym IECC stand for?

The F- factor relates to heat flow through

The unit for the measure of energy in the SI system of units is

A wet or moist material provides a higher R- value than if the same material is dry.

A wall framed with wood or steel studs is a mass wall.

In this text, we have used two quantities to specify the insulating value of a material-q- value and R- value. Explain the difference between the two.

Explain the component trade- off method in IECC and how it differs from the prescriptive method.

The units of measurement of U- value and U- factor are the same.

Like color, emissivity is a property of the surface of the material, not of the entire body of the material.

The R- value of a building assembly is influenced by the inside and outside air films. The sum of the R- values of these two films (Rsi + Rso)is approximately equal to

Determine the U- factor of the wall assembly in Question 2, which consists of 15% glazed area, and the U- value of glazing is 0.65.

If one surface of a vertical air space is lined with aluminum foil, its R- value = 2.5. What will be its R- value if both surfaces of the air space are lined with aluminum foil?

Which of the following insulating materials contain HCFC gas within their voids?

Why do we specify LTTR value for some insulating materials?

Apart from air and HCFC gas, which other gases are used to provide insulation?

A wall assembly (total area = 100 ft2)consists of 80 ft2 of opaque wall with an R- value of R- 20 and a 20 ft2 of window whose R- value is R- 2. The effective (overall)R- value of the entire wall assembly is approximately

The R- value of a 2- in.- thick material is 4.0. What is the R- value of the same material if its thickness is 1 in.?

What is thermal bridging as it relates to building envelope design?

What is aged R- value? To which materials does this concept apply and why?

For the same thickness, which of the following materials has the smallest R- value?

An Overview of the Building Delivery Process How Buildings Come Into Being

Design and Constructions Regulations

Loads on Buildings

Load Resistance the Structural Properties of Materials

Properties of the Envelope-II Air and Water Vapor Control

Fire and Smoke-Related Properties

Acoustical Properties of Materials

Principles of Joints and Sealants Expansion and Contraction Control

Principles of Sustainable Construction

Soils and Excavations

Below-Grade Construction Foundation Systems and Basements

Materials for Wood Construction-I Lumber

Materials for Wood Construction-Ii Engineered Wood Products, Fasteners, and Connectors

Wood Light-Frame Construction-I

Wood Light-Frame Construction-II

Structural Insulated Panel Construction

Material Steel and Steel Components

Structural Steel Construction

Cold-Formed Steel Construction

Lime, Portland Cement, and Concrete

Concrete Construction-I Formwork, Reinforcement, and Slabs-On-Ground

Concrete Construction-II Site-Cast and Precast Concrete Framing Systems

Masonry Materials-I Mortar and Brick

Masonry Materials-II Concrete Masonry Units, Natural Stone, and Glass Masonry Units

Masonry and Concrete Bearing Wall Construction

Exterior Wall Cladding-I Principles of Rainwater Infiltration Control

Exterior Wall Cladding-II Masonry, Precast Concrete, and Gfrc

Exterior Wall Cladding-III Stucco, Adhered Veneer, Eifs, Natural Stone, and Insulated Metal Panels

Glass, Glazing, and Light-Transmitting Plastics

Windows and Doors

Exterior Wall Cladding-Iv Wall System in Glass

Roofing-I Low-Slope Roofs

Roofing-I Steep Roofs

Stairs

Floor Coverings

Ceilings

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