Model(s) “AFJ” Floor
Seismic Expansion Control Systems
PART 1 - GENERAL
1.01 Work Included
A. The work shall consist of furnishing and installing expansion joints in accordance
with the details shown on the plans and the requirements of the specifications.
The joints are proprietary designs utilizing extruded profiles, elastomeric seals and
B. Related Work
- Cast-in-place concrete
- Miscellaneous and ornamental metals
- Flashing and sheet metal
- Sealants and caulking
A. Template Drawings - Submit typical seismic joint cross-section(s) indicating
pertinent dimensioning, general construction, component connections, and
1.03 Product Delivery, Storage and Handling
A. Deliver products in manufacturer's original, intact, labeled containers and store
under cover in a dry location until installed. Store off the ground, protect from
weather and construction activities.
1.04 Acceptable Manufacturer
A. All joints shall be as designed and manufactured by Watson Bowman Acme Corp.,
95 Pineview Drive, Amherst, New York 14228.
B. Alternate manufacturers and their products will be considered, provided they meet
the design concept and are produced of materials that are equal to or superior to
those called for in the base product specification.
C. Any proposed alternate systems must be submitted and receive approval 21 days
prior to the bid. All post bid submittals will not be considered. This submission
shall be in accordance with MATERIALS AND SUBSTITUTIONS.
Any manufacturer wishing to submit for prior approval must provide the following:
1. A working 6” sample of the proposed system with a letter describing how
system is considered superior to the specified system.
2. A project proposal drawing that illustrates the recommended alternate system
installed in the floor or wall construction that is specific to the project. Typical
catalog cut sections will not be considered.
3. Verifiable list of prior installations showing prior and successful experience
with the proposed systems.
4. Any alternate products not adhering to all specification requirements within,
will not be considered.
1.05 Quality Assurance
A. Manufacturer: Shall be ISO-9001:2008, RC14001:2008 certified and shall
provide written confirmation that a formal Quality Management System and
Quality Processes have been adopted in the areas of, (but not limited to)
engineering, manufacturing, quality control and customer service for all
processes, products and their components. Alternate manufacturers will be
considered provided they submit written proof that they are ISO 9001:2008,
RC14001:2008 certified prior to project bid date. Manufacturers in the process
of obtaining certification will not be considered.
B. Warranty: The Interior Fllor Series expansion control system’s performance shall
be warranted when installed by manufacturer’s factory trained installer. Installation
shall be in strict accordance with manufacturer’s technical specifications,
details, installation instructions and general procedures in effect for normal
intended usage and suitable applications under specified design movements and
C. Manufacturer: Shall have a minimum ten (10) years experience specializing in
the design and manufacture of Architectural Expansion Control Systems.
D. Application: The specified expansion control systems shall be installed by a
factory trained installer certified in the proper installation of the expansion
control and fire barrier systems.
PART 2 - PRODUCT
A. Provide seismic joint system that incorporates a flexible stainless steel leaf
spring that is mechanically snap locked into the leaf mount extrusion using no
fasteners. The system shall be capable of accommodating flexible finish floor
materials up to 3/8 inch by utilizing an adjustable leaf spring support. The
system shall show no visible aluminum surfaces except for that of a narrow trim
strip extending across the finish floor or wall surface. Throughout the normal
thermal movement cycle the system shall be capable of vertical displacement
while providing a smooth transition particularly at walking surfaces between
opposing floor slabs. (Leaf spring and trim strip profile features that do not
provide a smooth transition across the joint opening will not be considered).
B. Furnish Wabo?Allure Model “AFJ” Expansion Control System for interior floors
as manufactured by Watson Bowman Acme Corp. and as indicated on
2.02 Components and Materials
A. Leaf Spring - Material shall conform to A.I.S.I. 301 Stainless Steel. Spring shall
be tempered and secured to the retainer by a snap, lock fit. Mechanical
attachments to secure the spring element or rotation of the same during
movement will not be permitted.
B. Exposed Trim Strip Extrusion - Material shall conform to properties of ASTM
B221, Aluminum Alloy 6063-T6. The profile shall exhibit a visible exposed
finish strip not exceeding 7/8 inch in width and provide a smooth angular
sloping leg that guides the leaf spring during movement cycles. The profile
shall be snapped into the base extrusion by appropriate locking features and a
continuous threaded channel utilizing manufacturers recommended hardware.
C. Floor Base Extrusion - Material shall conform to properties of ASTM B221,
Aluminum Alloy 6063-T6. The profile shall exhibit a vertical pillar incorporating
pre-engineered slot locations to receive the adjustable leaf spring support.
D. Adjustable Leaf Spring Support - Material shall conform to properties of ASTM
B221, Aluminum Alloy 6063-T6. The profile shall exhibit a sloped top surface
with a minimum width of 1/2 inch to receive and support the leaf spring. The
profile shall have the capability of accommodating flexible finish floor material
thickness’ ranging from .080” to .375” by its attachment to the corresponding
slot location on the floor base extrusion.
E. Leaf Mount Extrusion - Material shall conform to properties of ASTM B221,
Aluminum Alloy 6063-T6. The profile shall exhibit a semi-closed rectangular
cavity designed to receive and lock the leaf spring into position without the use
of fasteners. Profiles that utilize fasteners and promote rotation of the spring
element will not be permitted.
F. Moisture Barrier - Material shall be flame retardant, extruded PVC in
accordance with ASTM D412. Durometer 60; 5. The profile shall be designed
with side lugs that ensure a snap lock fit into a corresponding aluminum cavity.
G. Anchors - Provide 3/8” diameter by 2-1/4” LG Zinc plated hex head concrete
expansion anchor with washer. At wall mounted aluminum profiles utilize 1/4”
diameter anchors. Spacing shall be 18” o.c. maximum.
H. Accessories - Provide necessary and related parts and fasteners required for
I. Blockout Repair - Utilize a single component rapid strength repair mortar.
J. Blockout Infill - Utilize a non-catalyzed, non-shrink grout containing mineral
K. Fire Barrier Assembly - Designed to provide the required fire endurance rating,
minimize passage of smoke and accommodate dynamic movement without
stress or degradation to its components. Test system in maximum joint width
incorporating a field splice. Supply Wabo?FlameGuard or
Wabo?ThermoShield Fire Barrier System as governed by joint opening, test
requirements and fire rating.
A. Aluminum extrusions and stainless steel leaf springs to be shipped in standard 10
ft. lengths and shall be cut to length on jobsite where required. Extrusions shall be
miter cut in the field to conform to directional changes unless otherwise contracted
with expansion joint manufacturer.
B. Moisture Barrier seals shall be shipped in the longest practical continuous
length in manufacturer’s standard shipping carton.
C. Fire Barriers - Ship manufacturer’s standard assembly including fire caulks,
sealants (if applicable) and hardware for the required hourly rating with ends
prepared for field splicing. Assemblies shall be miter cut in the field to
accommodate changes in direction.
A. Aluminum extrusions shall be supplied in standard mill finish.
PART 3 - EXECUTION
A. Install all Expansion Control Systems utilizing manufacturer’s blockout repair and
B. Protect all expansion joint component parts from damage during installation,
placement of concrete and thereafter until completion of structure.
C. Expansion joint systems shall be installed in strict accordance with the
manufacturer's typical details and instructions along with the advice of their
D. Expansion joint systems shall be set to the proper width for the ambient
temperature at the time of installation. This information is indicated in the
3.02 Clean and Inspect
A. Upon completing installation the contractor shall clean all exposed metal
surfaces with a suitable cleaner that will not harm or attack the finish. Inspect
for any damage that may have resulted from other work or building trades.