ASPCA & IECC
IECC & ASHRAE 90.1
NFRC & AAMA
ASTM E 331 & ASTM E 283
Minimum square foot of operable vent space
Maximum allowable ratio of natural daylight to solar heat gain
The annualized average low outside temperature in that zone
Minimum U-Factor accepted for exterior fenestration systems
Conviction, conjuction and regulation
Turn-over, transition and replication
Conduction, convection and radiation
None of the above
Center of glass
Edge of glass
Frame
All of the above
Utilizing polyamide thermal breaks
High performance coatings on the glass surface
Substituting argon gas for air in the center of an insulated glass unit
Utilizing triple-glazed units instead of double-glazed units
Stainless Steel
Thermally-broken aluminum
Zinc
Non-metal polymers
Develop a standardized commerical window that performs to an R-5 level
Not sacrifice the structural performance of metal products while reaching the thermal levels of non-metal materials
Provide the widest selection of finish options the market has seen
Design a marketable, cost-effective and commercially viable product
The rate of air flow through the gaps or cracks in the joints of a frame
The measure of solar heat passing through the system
The naturally occuring relationship between temperature and color
None of the above
Increasing energy cost
Lead time and short construction schedules
Government regulations and codes
Owner initiatives
NFRC
LEED
Green Globes
Living Building Challenge
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