General Specifications
Operable Partitions Paired Panels
Part 1 General
1.1 Work Included
1.1.1 Supply and install flat wall acoustical operable partitions as shown on the architectural drawings. All necessary hardware, seals, track, and rollers as needed to close the opening.

1.2 Related Work 
Not part of partitions supplier contract
1.2.1 Partition support steel adequate to keep extended partition from deflecting more than 1/2 inch (13 mm) and the stacked partition from a maximum deflection of 3/4 inch (20 mm). (section __________ )
1.2.2 Wall blocking that provides acoustical attenuation equal to or better than operable partition. Blocking structure to be sufficient to prevent any deflection due to linear partition pressure of 500 lbs (200 kg) 
1.2.3 Bulkheads, soffits, and sound insulation around perimeter of operable partition shall be better than or equal to the partition.
1.2.4 Floor preparation and covering of a construction that does not adversely impact acoustical capabilities of the partition. Reference ASTM E557-77 (Reapproved 1990).

1.3. System Description
1.3.1 The opening shall be made up of a series of rigid flat wall panels. Each panel is a one piece assembly nominally 48 inches wide (1.3 m). Unless requested the wall will comprise of the least number of panels.
1.3.2 The panel assemblies will be hinged together in pairs to make a unit capable of being folded and extended as a single unit. The mechanical seal of both panels will actuate with a single operating action. In the event of an odd number of panels there will be only one three panel group.
1.3.3 Operational Performance
1.3.3.1 The manual operation is accomplished with less than 20 lbs. (10 kg) to start movement and 10 lbs (5 kg) to sustain movement at the rate of 200 ft/min (60 m/min).
1.3.3.2 Bottom operable seals are activated and retracted with use of a removable handle.
1.3.3.3 Vertical movement of seals is up to 2 inches (50 mm).
1.3.3.4 Final closing is accomplished by means of a lever exerting pressure against wall and closing up to 3.5 inches (90 mm) of gap.
1.3.3.5 Closure to the lead wall is by use of a flexible bulb that can compensate for up to 1 inch (25 mm) of out of plumb conditions and up to 1/2 inch (12 mm) in 12 inches (300 mm).
1.3.3.6 Top continuous contact acoustical seal shall remain in a straight longitudinal plane within 3/16 inch (5 mm).
1.3.4 Acoustical Performance: Tested in accordance with ASTM E90 & E413 by a NVLAP accredited independent acoustical laboratory.

1.4. Testing References
1.4.1 Acoustical-Laboratory – ASTM E90 & E413
1.4.2 Acoustical-Site & Preparatory – ASTM E557-77 (Reapproved 1990)
1.4.3 Surface Burning – ASTM E84
1.4.4 Toxicity – University of Pittsburgh Smoke Toxicity Test
1.4.5 Corner Burn – UBC 42-2
1.4.6 Vertical Burn – ANSI A-17
1.4.7 Aluminum Anodizing – Class I coating ASA AA-Ml0C22A44 204-RI.

Part 2 Products

2.1 Acceptable Manufacturers
2.1.1 Model 400 paired panel system as manufactured by FolDoor/Holcomb & Hoke Mfg. Co., Inc.
2.1.2 Alternate systems that can meet or exceed the performance criteria as listed in Part 1 General. In the event of public bid process any manufacturer wishing to bid products that meet the specifications are to have approval to bid 10 days prior to bid date.

2.2 Panel Materials
2.2.1 Panels to be a nominal 4 inches (100 mm) thick assembled using rigid board or steel mounted to a steel sub frame. The panel assembly shall be filled with the appropriate acoustical material. All face materials shall be of Class A.
2.2.2 Exposed vertical and horizontal framing will cover face material edges. When possible the surface material will be wrapped around panel sub frame.
2.2.3 Vertical seal between panels will be nesting anodized architectural grade aluminum extrusion with vinyl sound seal. All exposed surfaces to have protective corrosion finish.
2.2.4 Low profile hinge to project 1/4 inch (6 mm) from panel edge.
2.2.5 Top horizontal sound seal is of flexible vinyl.
2.2.6 Bottom horizontal seal will be anodized architectural grade aluminum extrusion with vinyl sound seal and provide all required panel stabilization. All exposed surfaces to have protective corrosion finish.
2.2.7 Depending on size and surface treatment panel weights are 6.5 - 9.0 lbs/sq. ft. (32-44 kg/sq. mtr).

2.3 Track and Suspension Material
2.3.1 Overhead track will be clear anodized architectural grade aluminum extrusion with a continuous hardened steel raceway. Connection to support is by either pairs of infinitely adjustable steel support rods or screws to fasten to wood support.
2.3.2 Each panel has a single 4 wheel trolley with hardened precision bearing and tire. Pendant bolt to include safety system to prevent carriers from unscrewing yet allow for adjustment. Lock washers and/or anaerobic adhesives not acceptable
2.3.3 Ceiling and plenum closure (by others): Track will have integrated trim that allows for flush or protective recess installation of ceiling. The integrated trim will also provide location to position sound attenuating header side panels when required.

2.4 Panel Finishes
2.4.1 All panel surface finishes unless otherwise noted to be provided by manufacturer prior to arrival at job site.
2.4.2 The manufacturer will provide a standard selection of vinyl wall coverings, wall carpets, or designer wall fabrics.
2.4.3 Manufacturer's standard vinyl wall covering selection require: "Vinyls must contain a non-mercury based mildewcide" and "Be manufactured without the use of cadmium based stabilizers."
2.4.4 Customer may request other wall treatments but will be subject to approval for adhesion and performance.
2.4.5 Exposed aluminum to be architectural bronze anodized.

Part 3 Execution and Installation

3.1 Installation
3.3.1 The installation shall be in accordance with the manufacturer's printed instructions.
3.3.2 The partition supplier is not to deliver or install the product until the General Contractor or owner's representative can insure, in writing, safe storage of the material until final acceptance.
3.3.3 Installation shall be done only by manufacturer's approved installer.

3.2 Inspection and Acceptance
3.2.1 The partition installer will inspect for all items not in accordance with Part 1 Specifications. Installation will not proceed without written notification of deficiencies and mutual resolution agreed to with General Contractor.
3.2.2 Acceptance of finished work will be done in writing by authorized owner representative. Items provided by partition supplier prior to final acceptance:
- Service and cleaning instructions
- Owner - Operating manual
- Demonstration of partition
- List of recommended spare parts
- Warranty

3.3. Submittals
3.3.1 Field dimensions are the responsibility of the partition supplier unless otherwise agreed to in writing.
3.3.2 Fabrication of panels will be started only when approved shop drawings or acceptable purchase order has been received by the manufacturer.
3.3.3 Manufacturer will provide shop drawings within 7 working days upon request

3.4 Warranty
3.4.1 Manufacturer's standard warranty is one year from date of customer acceptance.