FREQUENTLY ASK QUESTIONS
FREQUENTLY ASK QUESTIONS
Q: What is the fundamental difference between IBC and ASCE 7 and what is the objective of each one?
IBC is a model code. ASCE 7 is a reference standard document of the IBC and for legal purposes is considered part of the code document.
The legal issue arises based on what the prevailing jurisdiction adopts. If the IBC is adopted in full then it is implied that all of the reference documents are also adopted.
Q: What's the difference between IECC and ASHRAE 90.1?
The IECC is a model energy code that references the ASHRAE 90.1 Standard
ASHRAE 90.1 is a minimum standard of energy efficiency in which the model code is based.
ASHRAE 90.1 and IECC have different 3-year cycles. IECC follows behind ASHRAE 90.1 by 2 years.
For example, IECC 2012 references ASHRAE 90.1-2010.
Q: What's the difference between Condensation Resistance (CR) vs Condensation Resistance Factor (CRF)?
AAMA Condensation Resistance Factor is based on an actual test and has been in place and used extensively for more than 30 years.
AAMA Condensation Resistance Factor (CRF), run between 30- 80, the higher the number the better.
NFRC Condensation Resistance rating (now replaced by Condensation Index, CI) relies on the prediction of a two-dimensional heat flow computer model. It is currently an optional rating and manufacturers may or may not choose to list this on their label.
NFRC Condensation Resistance is expressed as a number from 1 to 100 and the higher the number the better.
Q: What is the difference between R-value and U-factor?
U-factor and R-value are both measures of the insulation ability of different materials, but they are inversely related. U-factor is a measure of heat transfer, while R-value is a measure of heat resistance. U-factor is tested on the entire door or window assembly, while R-value is only calculated for a single component. A higher R-value indicates better insulation, while a lower U-factor indicates better insulation.
Q: Does laminated glass products automatically qualified as safety glazing?
No, because glass interlayers are available in different formulations and thicknesses, and not all of them will make two lites of glass laminated together pass safety glazing tests. Similar to tempered glass, laminated glass is only considered safety glazing once it passes 16 CFR 1201 or ANSI Z97.1 [Standard Safety Glazing Materials Used in Buildings - Safety Performance Specifications and Methods of Test].
BONUS RESOURCES:
INTERNATIONAL BUILDING CODE (IBC)
INTERNATIONAL ENERGY CONSERVATION CODE (IECC)
2020 FLORIDA BUILDING
BONUS RESOURCES:
A. NGA TECHNICAL PAPER
KURARAY BROCHURES
Kuraray Hurricane Brochures
Kuraray Security Glazing
Kuraray Trosifol Security Glazing
Kuraray Spallshield Brochure
ASTM STANDARDS
FORCE-ENTRY SECURITY: ASTM F3561-22 | ASTM F476-14
PERFORMANCE TEST: ASTM E283 -04 | ASTM E330-14 | ASTM E331-00 | ASTM E1300-16
IMPACT TEST: ASTM E1996-17 | ASTM E1886-13a