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PART 1: GENERAL
A. All applicable provisions of the Bidding and Contract Requirements, and Division 1 -General Requirements shall govern the work under this section.
A. Provide all labor, materials, necessary equipment and services to complete the Automatic, Vertically Folding, Thermally Broken, Exterior Glass Partitions (from here on called Operable Wall), as indicated on the drawings, or as specified herein or both.
B. Related work by others:
A. The products herein specified establish the standard of quality for the Operable Wall based on Skyfold Mirage®XT Custom Powerlift Partitions by Railtech Ltd. of Baie dʼUrfe (Montréal), Québec, Canada. Proposals for substitution of products or techniques not conforming to these specifications must be submitted at least ten (10) days prior to bidding. Any proposed substitute wall must be manufactured by a certified ISO-9001-2008 company or an equivalent quality control system and independent test reports which meet the requirements and design specified herein must be submitted to obtain approval.
B. The Operable Wall herein specified shall be furnished and installed by an authorized local distributor licensed by the Operable Wall manufacturer. Local distribution is required to ensure prompt project coordination and future customer service.
C. Performance requirements: The Operable Wall shall be designed to have a design life of at least 10,000 complete closed to opened to closed cycles. The Operable Wall shall comply with applicable manufacturerʼs independently certified testing results. Testing results include air infiltration in accordance with ASTM E283, water penetration in accordance with ASTM E547 and E331, structural loading in accordance with ASTM E330, forced entry in accordance with AAMA 1303.5 and condensation as per CSA A440-00.
D. Thermal Performance: The Operable Wall shall comply with the U value, rated, certified and labeled or simulated in accordance with NFRC 100, shown in manufacturerʼs latest published data for the glazing specified.
E. Solar Heat Gain Coefficient: The Operable Wall shall comply with the solar heat gain coefficient, simulated in accordance with NFRC 200, shown in manufacturerʼs latest published data for glazing specified.
SPECIFIER NOTE: Air infiltration and water penetration testing results can only be applicable if the unit matches the test unitʼs type of sill and drainage. Structural load testing results are only applicable for the test unit size.
A. American Architectural Manufacturers Association (AAMA):
1. AAMA 1303.5, Voluntary Specification for Forced Entry Resistant Aluminum Sliding Glass Doors.
B. American Society for Testing and Materials (ASTM):
C. National Fenestration Rating Council (NFRC):
D. American National Standards Institute (ANSI):
1. ANSI Z97.1, Safety Performance Specifications and Methods of Test for Safety Glazing Material Used in Buildings.
E. Consumer Product Safety Commission (CPSC):
1. CPSC 16CFR-1201, Safety Standard for Architectural Glazing Materials.
F. Canadian Standards Association (CSA):
1. Condensation test as per CAN/CSA A440-00 Windows.
A. The floor underneath the Operable Wall along its axis shall be flat to within +/-1/4” (6mm) over the entire length of an operable wall. The peak to valley undulation of+/-1/4” (6 mm) shall not be closer together than 24” (610 mm) and a peak to valley undulation of +/-1/8” (3 mm) shall not be closer than 12” (305 mm). If no sill is specified, the surface finish shall be smooth and continuous. Due to varying site conditions and requirements, the drainage must be prepared by others in strict accordance with the design and instructions provided by the Operable Wall manufacturer and in accordance with proper waterproofing techniques. If these guidelines are not followed or drainage is not provided, the system may leak with driven rain.
B. Support steel above the Operable Wall along its axis shall be parallel to the floor within +/-1/2” (12.7 mm) for the entire length of the Operable Wall. This includes loaded deflection. The beam must also be parallel to the center line of the Operable Wall within + 1/8” (3 mm), left to right.
C. The fixed walls and/or columns at either end of the operable wall shall be within +1/4”(6 mm)-0”, from plumb vertical.
D. The fixed walls and/or columns at either end of the operable wall shall be flat to within+0”, -1/4” (6 mm).
A. Submit manufacturerʼs technical data for each type of Operable Wall specified herein.
B. Submit shop drawings showing complete layout of the Operable Wall system based on field verified dimensions. The drawings shall include dimensional relationship to adjoining work. Include details indicating materials, finishes, and tolerances, methods of attachment to building steel and electrical requirements.
A. The Operable Wall shall be warranted free from defects in material and workmanship for a period of two years or five thousand cycles, whichever occurs first from date of shipment.
B. Parts and labor required to maintain the Operable Wall and parts subject to normal wear and tear are not covered under the warranty and are the ownerʼs responsibility. (Refer to Manufacturerʼs Recommended Maintenance Program).
PART 2: PRODUCT
A. Manufacturer: Railtech Ltd. Baie dʼUrfe (Montréal), Québec, Canada and Railtech Composites Inc., Plattsburgh, New York, USA
(514) 457-4767.
B. Product: Skyfold Mirage®XT Custom Powerlift Partitions
A. The Operable Walls shall refer specifically to the Automatic Vertically Folding, Thermally Broken, Exterior Glass Partitions that, when in the down position (closed)are hard, rigid, flat, plumb walls, made of a grid of rectangular panels, and when are lifted (opened), fold upward (vertically) without the use of any manual labor, in a manner similar to an accordion, into a pocket in the ceiling, between roof joists, or up between built in bulkheads.
B. The operable wall shall be opened and closed using two spring return, 3 position key switches, wired in series. Simultaneously turning the key from the “off” position shallcause the wall to move in the designated direction “up” or “down”. When hand pressure is removed, the wall shall immediately stop. The operable wall shall stop in a quick and positive fashion without coasting. As a normal part of the operation, it shall be possible to partially open (or close) the wall, stop it and then reverse the operation. There shall be 2 key switches per operable wall, on either end of the axis of the wall located on the interior of the building.
C. Electric motor shall be supplied for a three phase power supply. The motor assembly is mounted directly above the centre line of the operable wall. Support steel is only required at one location, OR an offset motor assembly is mounted on a separatesupport steel from the operable wall
D. There shall be no exposed hinges, brackets and screws visible when the operable wall is in the down (closed) position. The operable wall shall be visibly plumb vertical and rigid in the down (closed) position.
E. Joints between panels, vertical and horizontal, shall be no more than approximately½” (12.7mm) wide. All joints shall be sealed with finned brush seals and/or bulb seals.
F. The operable wall shall not weigh more than approximately 8 lbs/ft2 (39.1 Kg/m2), not including the lifting equipment.
G. Safety Equipment:
A. Thermal glass panels shall be clear, single lite, double glazed, laminated annealed glass or tempered glass, or other glass available from manufacturer, approximately1 1/8” (29mm) thick with 1/2” (13mm) air space, nominally of the same rectangular size, flat and free of sharp edges as per industry standards. All glass to comply with safety glazing requirements of ANSI Z97.1 and CPSC 16CFR 1201. Standard glass shall be provided with dry glazing.
A. The folding mechanisms and horizontal structural members shall be made from structural grade, thermally broken, aluminum extrusions and structural shapes. All wear surfaces, such as; bushings, spacers, pins, discs, bearings, sleeves, shall be designed to function quietly, and with minimum wear, over the 10,000 cycle, design life of the operable wall. All components shall be made of corrosion resistant materials such as anodized or painted aluminum, galvanized steel, stainless steel, and/or high strength plastics. The hangers, which fasten the folding mechanisms to the support structure, shall be fabricated from steel and shall be welded or bolted to the support structure supplied by others.
A. The locking mechanisms shall be made from corrosion resistant materials including stainless steel, galvanized steel and high strength plastics. The locking mechanisms shall automatically engage when the operable wall reaches itʼs down, fully closed, position and they shall automatically release prior to the operable wall commencing its assent from the fully down, closed position.
A. The wall tracks shall be made from manufacturerʼs standard, structural grade, thermally broken, painted or anodized, aluminum extrusions.
A. The lifting equipment shall be sized properly so that it can open and close the walleffectively over the 10,000 cycle design life of the wall, at the minimum design speed of approximately 5 to 10 vertical feet per minute.
B. The lifting equipment shall be designed to function as smoothly, quietly and safely as possible. Wherever possible, ball bearings shall be used instead of bushings and wear surfaces.
C. There shall be a wire rope cable for every set of folding mechanisms. This cable shall be of 6 x 31 construction aircraft cable and shall be made of galvanized steel. The diameter of the cables shall be sized so that they shall be able to hold the entire weight of the wall, with the appropriate safety factor. Chain or belt drive systems are not acceptable.
D. The power drive shall be sized to deliver sufficient amount of torque to safely and effectively raise and lower the operable wall over its design life.
A. The operable wall shall provide an air and water resistant seal that shall automatically seal against the floor threshold (sill) without the need for any manual intervention. The floor seals shall leave a joint between the floor threshold (sill) and the bottom of the operable wall of not more than approximately 1/2” (12.7mm).
B. The operable wall shall provide an air and water resistant seal that shall automatically seal to the wall track and leave a joint between the lifting mechanism and the track of no more than approximately 1/4” (6.4 mm).
C. The operable wall shall provide an air and water resistant seal that shall automatically seal against the head jamb without any manual intervention. The top seals shall leave a joint between the top of the operable wall and the head jamb of not more than approximately 1” (25.4 mm).
D. The operable wall shall provide automatic air and water resistant seals at the vertical and horizontal joints between the moving arms of the folding mechanisms and between adjoining horizontal structural members. The seals will be finned brush seals and/or bulb seals.
A. Provide manufacturerʼs thermally broken, raised, stepped sill OR thermally broken low profile, stepped sill OR low profile saddle sill OR flush sill.
SPECIFIER NOTE: Air infiltration and water penetration testing results can only be applicable if the unit matches the test unitʼs type of sill and drainage.
PART 3: EXECUTION
A. Preparation of opening shall be by general contractor. Any deviation of site conditionscontrary to approved shop drawings shall be called to the attention of the architect.
A. Delivery to the job site shall be coordinated by general contractor. Proper storage ofpartitions before installation and continued protection during and after installationshall be the responsibility of the general contractor. The operable wall supplier shallnot deliver or install this product until the General Contractor can ensure in writingsafe storage and protection for the wall for the duration of the project.
A. Inspect the relevant aspects of the site such as the evenness of the floor, walls,structural steel, etc., and ensure that these are within the tolerances stated in Part – 1 (Site Conditions) of this specification. Confirm in writing to the General Contractoror contract manager any deviations from these tolerances. Do not proceed until theseconditions are made good. Carry out all appropriate field measurements before manufacturing any components or assemblies.
A. Install operable walls in accordance with the manufacturerʼs printed instructions.Installation shall be by an authorized factory trained installer. Installation shall be inaccordance with local building codes regarding building envelope construction..
A. Adjust and fine-tune the operable walls to ensure that all seals are operating andsealing properly and that the walls are in correct and smooth operation.
B. Clean up any dirt, oil, grime, etc., that may have found its way onto the panels.Leave the wall in a state of architectural cleanliness.
A. Ensure the manufacturer has ample stock available for repairs.
A. The complete installation of the operable wall system as called for and detailed on the drawings shall be provided in strict accordance with the drawings and manufacturers standard printed specifications, instructions and recommendations.
