BUILDING TECHNOLOGY FINAL EXAM
QUESTIONS AND VERIFIED CORRECT
ANSWERS
Name two situations in which you might use Fritted/Spandrel Glass? answer - Office Buildings
Residential Buildings
Mercantile/Retail Stores
Any situation where a glass wall extends past the floor edge
Visible Light Transmittance (VT): answer - the visible light that passes through the glass relative
to the amount of light striking the glass.
Solar Heat Gain Coefficient (SHGC) answer - the ratio of solar heat admitted through a
particular glass to the total heat energy striking the glass.
Light to Solar Gain (LSG) answer - ): useful to measure the overall energy-conserving potential
of the glass. High LSG means that more light and less heat is entering the building.
Insulating Glass Units (IGUs answer - hermetically sealed with dry air, spacer, desiccant
removes moisture, sealed.
Glass is not an effective insulator: Double and triple glass sheets are typically used to cut the
transfer of heat gain or loss by half or a third.
Low-emissivity coating (low-e): answer - •Selectively reflects solar radiation at different
wavelengths
•Achieves the highest LSG ratio
, R-Value answer - tells us how well a particular construction material (glazing) insulates or
resists heat transfer. Higher the R-value, the better the insulation and more energy saved.
U-Value: answer - the lower the U-value (less heat loss), the more energy efficient the system
will be. It is the rating of how much heat energy is lost or gained.
Thermochromatic: answer - changes transparency in response to temperature
Photochromatic: answer - changes transparency in response to light intensity
Liquid-crystal Glass: answer - when electric current is provided the glass exhibits
electrochromic properties
Electrochromic: answer - changes transparency to opacity
three primary materials that windows are typically made of answer - wood:•is good insulator
but shrinks and expands with moisture content
•Aluminum strong and easy to form, not susceptible to moisture, rapid heat conductor (thermal
break)
•Plastic not as strong and has high coefficient of thermal expansion (Not Sustainable)
•Glass Fiber Reinforced Plastic (GFRP), more expensive
What are the main characteristics that impact the suitability of wood for interior building?
answer - Grain, color, hardness, fire and ultraviolet resistance, and moisture
As a tree grows, the innermost sapwood dies and becomes _____ which provides structural
support for the tree. answer - Heartwood
QUESTIONS AND VERIFIED CORRECT
ANSWERS
Name two situations in which you might use Fritted/Spandrel Glass? answer - Office Buildings
Residential Buildings
Mercantile/Retail Stores
Any situation where a glass wall extends past the floor edge
Visible Light Transmittance (VT): answer - the visible light that passes through the glass relative
to the amount of light striking the glass.
Solar Heat Gain Coefficient (SHGC) answer - the ratio of solar heat admitted through a
particular glass to the total heat energy striking the glass.
Light to Solar Gain (LSG) answer - ): useful to measure the overall energy-conserving potential
of the glass. High LSG means that more light and less heat is entering the building.
Insulating Glass Units (IGUs answer - hermetically sealed with dry air, spacer, desiccant
removes moisture, sealed.
Glass is not an effective insulator: Double and triple glass sheets are typically used to cut the
transfer of heat gain or loss by half or a third.
Low-emissivity coating (low-e): answer - •Selectively reflects solar radiation at different
wavelengths
•Achieves the highest LSG ratio
, R-Value answer - tells us how well a particular construction material (glazing) insulates or
resists heat transfer. Higher the R-value, the better the insulation and more energy saved.
U-Value: answer - the lower the U-value (less heat loss), the more energy efficient the system
will be. It is the rating of how much heat energy is lost or gained.
Thermochromatic: answer - changes transparency in response to temperature
Photochromatic: answer - changes transparency in response to light intensity
Liquid-crystal Glass: answer - when electric current is provided the glass exhibits
electrochromic properties
Electrochromic: answer - changes transparency to opacity
three primary materials that windows are typically made of answer - wood:•is good insulator
but shrinks and expands with moisture content
•Aluminum strong and easy to form, not susceptible to moisture, rapid heat conductor (thermal
break)
•Plastic not as strong and has high coefficient of thermal expansion (Not Sustainable)
•Glass Fiber Reinforced Plastic (GFRP), more expensive
What are the main characteristics that impact the suitability of wood for interior building?
answer - Grain, color, hardness, fire and ultraviolet resistance, and moisture
As a tree grows, the innermost sapwood dies and becomes _____ which provides structural
support for the tree. answer - Heartwood
