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Advertising supplement provided by
Solutia Inc. and Viracon
Neither document provides guidance on the blast size or duration.
That information comes from the threat and risk assessment
of the facility. Some common levels of blast that have been
extracted from designs are: 4 psi at 28 psi*msec (basic level)
and 10 psi at 89 psi*msec (enhanced level). There are some
government agencies that require 40+ psi overpressure with
several hundred msec durations; however those levels are typically
used specifically for very high risk facilities. Using laminated
glass with polyvinyl butyral (PVB) interlayers in properly
designed frames can successfully meet all of the mentioned
blast levels. For low level blast loads, standard commercial
frames with properly designed glazing, anchoring and laminated
glass have been shown to perform effectively. For higher level
loads or complex structures, a blast consultant or structural
engineer may need to be contacted for design review.
In addition to the test methodologies outlined above, software
analysis programs have been established to assist in analyzing
the response of windows during an explosion. These programs
were all developed based on past testing that was conducted
and they assist blast consultants and engineers in the design
process.
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Tests prove that
when windows glazed with laminated glass
with a PVB interlayer are subjected to a
blast impulse, broken glass fragments tend
to adhere to the PVB interlayer rather than
spraying building occupants.
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Click For Additional
Required Reading
To receive AIA/CES credit, you are required to read
this additional text.
For a faxed copy of the material, 877-674-1233 or email
glazin@solutia.com.
The following quiz questions
include information from this material.
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About Solutia Inc. and Viracon
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Solutia Inc. is a world leader in performance films,
producing Saflex® and Vanceva™ brand polyvinyl
butyral interlayers (PVB) for laminated glass in automotive,
architectural and residential applications.
Viracon is an international company of Apogee Enterprises,
Inc. Viracon produces high-performance glass products,
including tempered, laminated, insulating, and silk-screened
glass, and high-performance coatings. Apogee Enterprises,
Inc., is a leading fabricator, distributor, and installer
of value-added glass products and systems.
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