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Features:
Fire-Rated
- SJS-FR1 and SJS-FR2 have been tested and certified by Underwriters Laboratories (UL) to the
rigors of UL 2079.
UL 2079, like ASTM E1966,
was developed to encompass the fire testing of ASTM E119 and the
movement cycling regime of ASTM E1399.
SJS-FR meets the requirements of
ASTM E1966, ASTM E119 and ASTM E1399.
As a single unit fire-rated expansion joint it
eliminates the need for additional fire stops or fire blankets or barriers at the joint gap thereby
eliminating the need for multiple products to perform the roles of sealing,
bridging and fire-rating joints.
EMSHIELD SJS-FR1 has been tested in
accordance with UL 2079 in the configurations depicted in UL Systems
FF-D-1091 and
FF-D-2014
and ULC System
JF140. EMSHIELD SJS-FR2 has also been tested and certified in
UL Systems
FF-D-1092 ,
FF-D-2015 and ULC System
JF142
(Click this
link for all EMSEAL UL and ULC Listings).
Watertight – The tensionless silicone bellows are
installed flush to the mounting height of the system and just below the
coverplate ensuring watertightness at the traffic surface. This
eliminates the need for ineffective moisture barriers and secondary
gutter systems.
Sound Attenuation – The flanking impregnated foam and silicone
hybrid dampens sound and
shock effectively. When installed over EMSEAL-supplied elastomeric
nosing material, the result is arguably the quietest watertight
coverplate system available.
(Click this link to see and hear the SJS difference.)
Easier Installation – Using non-invasive anchoring the
SJS-FR
eliminates hard metal-to-concrete connections as well as intrusive pins,
anchors, screws, bolts or tracks, trays or rails. The system is locked
to the joint faces by the backpressure of the foam and an epoxy
adhesive, and by the weight of the assembly.
(Watch the video of installation
in a parking deck
or a stadium)
And
because SJS-FR1 installs entirely from the top of the slab, there is no
need for utility lifts and extra holding labor. Furthermore, a
continuous run of SJS-FR1, and therefore continuity of fire protection
and complete compartmentalization, is not complicated by working around
the installation of other under-slab systems like plumbing, electrical,
mechanical and HVAC components.
Self-Locating Coverplate Screws – The center spline is a
continuous receptor for the coverplate screws that are self-tapped into
the anchor channel. This dramatically reduces the installation-related
problems of locating self-centering, sliding ball devices and
pantographs. The probability of screws being left out is eliminated
ensuring proper anchoring.
Self-Locking,
Vibration-Dampened Screws – Vibration in systems that rely on metal-to-metal
connections and contact points is the main cause of screw loosening. SJS
by EMSEAL minimizes vibration through the dampening action of the
massive and continuous springs of impregnated foam along the entire
length of the joint. In addition, 30 pounds of force is required to
loosen the screws offering excellent screw tightness without the need
for thread-lock compounds.
Field-Adjustable
Plate Support – Concrete in new and retrofit applications is
inevitably uneven across and along the joint. The SJS-FR is installed over
a leveling-bed of EMSEAL-supplied elastomeric nosing material providing
the ability to fine-tune the support of coverplate sections
reducing rocking and noise caused by unleveled plates. Systems that
attach or utilize intrusive extruded rails to receive sliding ball and
socket devices cannot be adjusted to eliminate unevenness across and
down the length of the joint.
Continuity of Seal
– All EMSEAL expansion joint systems feature
continuity of seal
through
changes in plane and direction –– an essential performance
differentiator. Fabricated transitions
from deck to wall, at curbs, sidewalks, parapets, tees, and crosses are
available with the SJS-FR.
Finite Element
Analysis (FEA) Compiled Safety Factors – Prior to field trials, the
SJS by EMSEAL was modeled using FEA to determine the suitability of
design to worst case possible parking deck loads. Under the scenario of
a 4,000 lb vehicle skidding across the joint system to full stop once
past the coverplate, FEA modeling
predicted lateral displacement of the coverplate of less than 3/4-inches
(19mm) and safety factors in key components as follows:
FEA Safety
Factors:
Traffic Plate - 5; Screws - 11; Spline Pins - 10; Center Spline - 7
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