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Operable Partitions Glossary of Terms
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ACOUSTICAL SUBSTRATE: The underlying material which is E90. The “Standard Test Method for Laboratory
laminated to both sides of the panel frame and used for deadening Measurement of Airborne-Sound Transmission Loss of
or absorbing sound and providing support and strength to a panel’s Building Partitions” is an ASTM testing procedure which
overall construction. Most commonly used substrates include covers the laboratory measurement of airborne-sound
gypsum board, masonite, mineral fi ber board, plywood and particle transmission loss of building partitions such as walls,
board depending on model, STC rating, Fire rating and optional windows and other space-dividing elements.
features required. Also referred to as Structural Acoustical Backer. E413. The “Classifi cation for Rating Sound Insulation”
provides methods of calculating single number acoustical
ACTUATORS: A mechanism within an operable or portable ratings using data from laboratory measurements of the
partition which mechanically extends/retracts an Operable Top/ sound transmission loss of partitions such as E90. The
Bottom Seal or an Expander Panel Closure outward. The drive single number rating, called the Sound Transmission Class
system is initiated by inserting a lever or wrench that is provided (STC), permits specifi ers to rank the sound transmission
with every wall system featuring Operable Top/Bottom Seals or loss or noise performance of wall systems.
Expander Panel Closure. KWIK-WALL actuators are located in the
edge of a Steel Reinforced Panel (2000 Series) and Steel Panel (3000 C423. The “Standard Test Method for Sound Absorption
Series) for all panels with Operable Top/Bottom Seals. Expander and Sound Absorption Coeffi cients by the Reverberation
Panel Closure and Portable Partitions (Model 507) are equipped with Room Method.”
actuators located on face of panel(s).
E557. The “Architectural Application and Installation of
A.D.A.: Americans with Disabilities Act. Operable Partitions” defi nes how to prepare, and to some
extent design, the perimeter opening of the operable wall
ADJUSTABLE BOTTOM SEAL: See listing under BOTTOM system. This standard covers sound leaks, fl anking paths
SEALS. and structural support.

ADJUSTABLE HINGED JAMB: An aluminum shaped C-channel A653. The “Sheet Steel, Alloy-Coated (Galvannealed) by
which is mounted permanently and directly to a structural wall. The the Hot Dip Process” designates the coating weight (mass)
C-channel retains a tongue-and-groove type aluminum extrusion for cut lengths and coils of steel. This designation pertains
which may be adjusted vertically to assure complete plumbness and to type, grade and chemical composition of the steel sheet.
fi t of the Hinged Panel. The Hinged Panel is suitably equipped with
a mating tongue-and-groove type aluminum extrusion for positive ASTRAGAL: A porous absorptive material (vinyl or
interlocking with the Adjustable Hinged Jamb. See also Hinged rubber) used on the Bottom, Top and Vertical Seals of a
Panel Closure under FINAL CLOSURE listing. wall panel for the purpose of dissipating or converting
sound energy on impact and blocking light.
ADJUSTABLE RODS: Also referred to as Hanger Rods. See listing
under DROP RODS. AUTOMATIC BOTTOM SEAL: See listing under
BOTTOM SEALS.
ADJUSTABLE STARTER JAMB: An aluminum shaped
C-channel which is mounted permanently and directly to a structural BAFFLE: Refers to the sound insulation barrier that is
wall. The C-channel retains a tongue-and-groove type aluminum located in the plenum area above the ceiling and track.
extrusion which may be adjusted vertically to assure complete
plumbness and fi t of the Lead Panel for accomplishing the wall’s BASE CHANNEL: The Fixed or Adjustable aluminum
initial closure. The Lead Panel is suitably equipped with a mating extrusion used on the bottom of portable wall panels
tongue-and-groove type aluminum extrusion for positive interlocking (Models 508 and 509).
with Adjustable Starter Jamb. See listing under INITIAL CLOSURE.
BASICS CARPET: Wall carpeting which is applied to
ASTM: The American Society of Testing Material is a technical not- the exterior surface of a panel. Upgrade Carpet consists of
for-profi t organization which publishes a consensus of standards that acoustically absorbent, Class A rated, non-woven needle
allow producers and end users to meet on common ground: punch carpet fi bers fused to prevent fraying or unraveling
of material weighing 22.5 ounces per lineal yard. Upgrade
E84. The “Surface Burning Characteristics of Building Materials” is a selections of carpet are offered at an additional cost over
widely accepted classifi cation system developed by the National Fire the standard vinyl base price. See listing under FINISH.
Protection Association Life Safety Code. The purpose of this test is to
determine the relative burning behavior of the material by observing BOTTOM SEALS: Vinyl or rubber material used for
and reporting the fl ame spread and smoke density of the specimen. deadening and absorbing sound while also preventing light
The Class A rating designates a fl ame spread rating of 0 to 25 and a from escaping under the bottom of a panel / wall. KWIK-
maximum smoke density rating of 50. The fl ame spread classifi cation WALL bottom seals consist of fl exible vinyl seals which are
system is based on the premise that the higher the fl ame spread installed on both sides of the panel. Six (6) basic Bottom
numbers, the greater the fi re spread potential. ASTM Standard E84 Seal confi gurations are available depending upon panel
is intended to measure and describe the properties of the materials, operation and customer preference:
products or assemblies in response to heat and fl ame under
controlled laboratory conditions and should not be used to describe Adjustable Bottom Seal. A bottom seal confi guration
or appraise the fi re risk of such materials under fi re conditions. consisting of two (2) fi ngers with compressed bulb,
continuous-contact fl exible vinyl which is installed on both
sides of the panel and fi eld-adjustable. 2

07-15
Dimensions in [ ] are millimeters. Contact your local distributor for additional assistance or visit www.kwik-wall.com