Codes Regulations  
&
Is Your  
Company One  
of the Nation’s  
New Standard Addresses  
Top Contract Electrochromic Glazing  
he International Organization for any electrochromic glazing fabricated  
Glaziers?  
Standardization has published a for vision glass (e.g. insulating glass  
new standard that specifies the unit, laminated glass) for use in build-  
T
INSIDE: GANA’s BEC Conference Heads Back to Las Vegas  
accelerated ageing test and require- ings such as doors, windows, skylights  
ments for electrochromic (EC) glazings. and exterior wall systems and glazing  
According to the introduction sec- exposed to solar radiation,” the scope  
tion of the standard, ISO 18543:2017, reads.“The layers used for constructing  
it is intended “to provide a means for the EC glazing and for electrochromi-  
evaluating the durability of electro- cally-changing the optical properties  
METAL & GLAZING  
®
M S A 2  
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The Nation’s  
Also Inside:  
Glass Usage Report  
New Business in Education  
Top Contract Software—the  
Move to Robotics  
chromic glazings.”  
The test procedures covered in the  
can be inorganic or organic materials.”  
The document notes that electro-  
Glaziers  
document include: a “rapid but realis- chromic glazing performs several  
tic cycling between high and low light important functions in a building  
transmission states” and “environmen- envelope, including: minimizing the  
tal parameters that are typically used in solar energy heat gain; providing for  
weatherability tests,” such as simulated passive solar energy gain; controlling  
solar exposure and high temperature.  
a variable visual connection with the  
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According to the standard’s scope, outside world; enhancing thermal  
the test method only applies to glazings comfort (controlling heat gain), energy  
that can be switched between high- and efficiency performance, illumination,  
low-transmission states using an electri- and glare control; and providing for  
cal stimulus. It doesn’t include thermo- architectural expression.  
The 14-page standard was published in  
September through the ISO/TC 160/SC 1  
This test method is applicable to Glass in Building technical committee.  
LLAARRGGEESSTT CCIIRRCCUULLAATTIIOONN OOFF AANNYY GGLLAASSSS MMAAGGAAZZIINNEE  
The February 2018 issue  
of USGlass Magazine  
will feature our annual  
ranking of the nation’s  
top contract glaziers.  
chromic or photochromic glazings,which  
do not respond to electrical stimulus.  
New ASTM Standard Helps  
Monitor Building Sealants  
To nominate your company  
for consideration, fill and  
submit the form here:  
www.usglassmag.com/  
glaziers/  
new ASTM International standard will help manufacturers and regula-  
tors better understand how building sealants change once they have  
been compressed or stretched. The new standard (C1815) was devel-  
A
oped by ASTM International’s committee on building seals and sealants (C24).  
Think about the last time you rolled out pizza dough,” says ASTM Interna-  
by January 15, 2018.  
tional member Christopher White, a research chemist at the U.S. National In-  
stitute of Standards and Technology. “You would stretch the dough and it would  
change shape some, but then spring back as well. If you held it stretched out,  
it would spring back a smaller amount. This is exactly what some sealants do  
when installed in a building.”  
White adds that the new standard helps quantify that behavior.  
The new standard will be used by manufacturers to measure the residual  
stress in various sealant formulations. In addition, regulators will use the stan-  
dard to modify existing sealant standards to more realistically incorporate seal-  
ant compression behavior. s  
For more information  
contact Ellen Rogers at  
erogers@glass.com or  
call 540/720-5584  
ext. 118.  
28  
USGlass, Metal & Glazing | December 2017  
www.usglassmag.com  

USGlass
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