Watertight, Sound-Dampened Seismic and
Large-Gap* Joint System For Parking Decks, Car Parks, Stadiums and
Floors
•
Watertight & Traffic Durable
•
Sound Dampened
•
No Invasive Cover Plate Anchors
•
No
hard connections to concrete
•
Installs rapidly in new or retrofit conditions
•
Eliminates
leaks at large structural expansion joints
•
Reduces
maintenance costs
Joint Sizes:
4"
to 24"
(100 - 600mm)
Movement Capability: up to 100% Total (+50% and -50% of nominal supplied size.)
Now Also Available:
EMSHIELD SJS-FR--SJS SYSTEM with built-in fire rating up to 2 hours. One
Install Does it All--Fire Rating, Watertight, Traffic Durable, 100%
movement. No anchors, no fire-blankets, no gutters.
The SJS SYSTEM by EMSEAL is
comprised of silicone-and-impregnated-foam hybrid components that ensure
watertightness, absorb sound, dampen vibration and offer uncomplicated
installation.
Created from the
latest evolution in the field-proven technology that EMSEAL
has used for 30 years of sealing horizontal plane joints with
impregnated foam sealants, the SJS is constructed from two horizontal
joints pre-assembled in parallel adjacent to a heavy-duty extruded
aluminum spline. The spline acts as a receptor for
attaching the surface-mounted traffic plates that bear vehicle and other
loads. The result is a
system that offers features and benefits not found in alternative
products intended for large
horizontal structural joint gaps.
Features: 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. SJS SYSTEM is also available
specifically for watertight integration with split-slab buried
waterproofing systems--see SJS-FP. Sound Attenuation – The flanking impregnated foam and silicone
hybrid dampens sound and
shock effectively. When installed over EMSEAL-supplied elastomeric
nosing material (EMCRETE), the result is arguably the quietest watertight
coverplate system available.
(Click to see and hear the SJS difference.)
Easier Installation – Using non-invasive anchoring the
SJS
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).
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 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.
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
Depth of Seal (Foam Depth):
4-inches (100mm) to 8-inches (200mm) wide = 4-inch (100mm) deep
9-inches (225mm) to 18-inches (450mm) wide = 5-inch (125mm) deep
(NOTE: This video demonstrates the ease of installation of the SJS
SYSTEM using Custom-90-degree transitions pre-manufactured to field
measurements provided by the installing contractor. This video does not
cover in detail all of the installation steps for the system. Please
consult your EMSEAL field technician and the
complete installation instructions available on emseal.com).
SJS-SYSTEM in STADIUMS--Watertight
system for large concourse and tread and riser joints. Shown here
replacing rubber-encased coverplate. (click images to enlarge)
Now Also Available: 
