O&MM Fabricator - March/April 2018 - 23

shards of glass. Tempered glass has been used
in glass railing systems for many years due to
its exceptional strength and safety; however,
the 2015 International Building Code now limits
its use in handrails and guards to cases where
there is no walking surface beneath them or
the walking surface is permanently protected
from the risk of falling glass.

PVB and five times more tear resistant.
Ionoplast interlayers were originally developed for wind-borne debris protection after
Hurricane Andrew in the 1990s, but it soon
became a popular structural interlayer for
glass facades, railings and walkways. The
minimum interlayer thickness for safety glazing compliance is .035".

Laminated Glass
Laminated glass consisting of two plies of
heat-strengthened or tempered glass bonded
together by interlayers has been a glass railing
option for many years, although the majority
of systems were designed to accommodate
monolithic tempered glass. With the shift in
code requirements to laminated glass, most
railing systems manufacturers offer both tempered and laminated glass.
Laminated glass offers post-breakage
retention of glass particles. Depending on
the glazing system design, laminated glass can
continue to serve as a barrier until a replacement panel is installed. Even in minimallysupported glass railing designs, laminates
made with a stiff interlayer can provide some
load-carrying capacity after breakage.
The most well-known flexible interlayer
is polyvinyl butyral (PVB). Developed in the
1930s for automotive windshields, PVB offers
durability, safety and improved acoustics. The
interlayer effectively blocks up to 99 percent
ultraviolet radiation, a major cause of fading
of interior fabrics and furnishings. A minimum
.030" thick PVB is used for safety glazing;
often, .060" is used with tempered and heatstrengthened glass laminates.
In the stiff interlayer category, Ionoplast
interlayers are 100 times stiffer than standard

Laminated Glass Quality
ASTM C1172 is the standard used to assess
laminated glass quality. While the standard
addresses common blemishes that can result

888678_Regency.indd 1

during processing, it does not present tolerances for specific architectural applications,
such as point supported glass and glass balustrades, where the edges of the laminate are
exposed. Instead, Section 8.5.3 instructs the user
to contact the manufacturer to determine their
capabilities. Since many glass railing designs
are frameless, the alignment of the two pieces of
glass in the laminate is a critical quality concern.
Post-fabrication of heat-treated laminates
is a subject of debate in the glass industry.
ASTM C1048, the quality standard for tempered and heat-strengthened glass, does not

March/April 2018 * O&MM Fabricator
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http://www.regencyrailings.com http://www.regencyrailings.com

Table of Contents for the Digital Edition of O&MM Fabricator - March/April 2018

President’s Letter
Letter From the Executive Director
NOMMA Network
NOMMA Education Foundation
2018 Top Job Winners Showcase
Laminated Glass Railing: New Requirements and Pointers for a Successful Installation
Francis & Hazel
The Tax Cuts and Jobs Act
NOMMA Member Savings Program–Metalfab Update
Supplier Members
New & Returning Nomma Members & Iron Club Members
Gold Members
Take a Stroll Down Memory Lane - Nomma’s First Years, Part Ii
Index of Advertisers
O&MM Fabricator - March/April 2018 - Intro
O&MM Fabricator - March/April 2018 - bellyband1
O&MM Fabricator - March/April 2018 - bellyband2
O&MM Fabricator - March/April 2018 - cover1
O&MM Fabricator - March/April 2018 - cover2
O&MM Fabricator - March/April 2018 - 3
O&MM Fabricator - March/April 2018 - 4
O&MM Fabricator - March/April 2018 - 5
O&MM Fabricator - March/April 2018 - 6
O&MM Fabricator - March/April 2018 - 7
O&MM Fabricator - March/April 2018 - 8
O&MM Fabricator - March/April 2018 - President’s Letter
O&MM Fabricator - March/April 2018 - 10
O&MM Fabricator - March/April 2018 - Letter From the Executive Director
O&MM Fabricator - March/April 2018 - NOMMA Network
O&MM Fabricator - March/April 2018 - 13
O&MM Fabricator - March/April 2018 - 14
O&MM Fabricator - March/April 2018 - 15
O&MM Fabricator - March/April 2018 - NOMMA Education Foundation
O&MM Fabricator - March/April 2018 - 17
O&MM Fabricator - March/April 2018 - 2018 Top Job Winners Showcase
O&MM Fabricator - March/April 2018 - 19
O&MM Fabricator - March/April 2018 - 20
O&MM Fabricator - March/April 2018 - 21
O&MM Fabricator - March/April 2018 - Laminated Glass Railing: New Requirements and Pointers for a Successful Installation
O&MM Fabricator - March/April 2018 - 23
O&MM Fabricator - March/April 2018 - 24
O&MM Fabricator - March/April 2018 - 25
O&MM Fabricator - March/April 2018 - Francis & Hazel
O&MM Fabricator - March/April 2018 - 27
O&MM Fabricator - March/April 2018 - 28
O&MM Fabricator - March/April 2018 - 29
O&MM Fabricator - March/April 2018 - The Tax Cuts and Jobs Act
O&MM Fabricator - March/April 2018 - 31
O&MM Fabricator - March/April 2018 - 32
O&MM Fabricator - March/April 2018 - 33
O&MM Fabricator - March/April 2018 - 34
O&MM Fabricator - March/April 2018 - NOMMA Member Savings Program–Metalfab Update
O&MM Fabricator - March/April 2018 - 36
O&MM Fabricator - March/April 2018 - Supplier Members
O&MM Fabricator - March/April 2018 - 38
O&MM Fabricator - March/April 2018 - New & Returning Nomma Members & Iron Club Members
O&MM Fabricator - March/April 2018 - 40
O&MM Fabricator - March/April 2018 - Gold Members
O&MM Fabricator - March/April 2018 - 42
O&MM Fabricator - March/April 2018 - Take a Stroll Down Memory Lane - Nomma’s First Years, Part Ii
O&MM Fabricator - March/April 2018 - 44
O&MM Fabricator - March/April 2018 - Index of Advertisers
O&MM Fabricator - March/April 2018 - 46
O&MM Fabricator - March/April 2018 - cover3
O&MM Fabricator - March/April 2018 - cover4
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