CODES: The most current applicable Building and Safety Code shall apply to the design and construction of the bleachers. Purchaser is to verify applicable code requirements.

DESIGN: Seating shall be designed to support, in addition to its own weight, a uniformly distributed live load of not less that 100 pounds per square foot of gross horizontal projection of the facility. All seat and foot plank members shall be designed to support not less than 120 pounds per lineal foot over a 6' span, multi-span condition. Facility shall be designed to resist with or without live load a horizontal wind load of not less than 30 pounds per square foot of gross vertical projection. Structure shall also be designed to resist, in addition to the live load, sway forces applied to the seat in a direction parallel to the direction of the seat planks of 24 pounds per lineal foot and separately in a direction perpendicular to the direction of the seats of 10 pounds per lineal foot of seat plank.

SUPPORT STRUCTURE: Support structure shall consist of welded aluminum angle frames set on 6'-0” centers. Aluminum angle bracing shall be installed in all bays to support wind and sway loads. All aluminum angle is ALLOY 6005A-T6 mill finish. Each frame shall consist of vertical aluminum angle, diagonal aluminum angle, and horizontal aluminum angle welded to form a 6” or 8” rise and a 24” tread depth, unless otherwise specified. Seat plank shall rest on a seat support with a minimum bearing surface of 8-1/2” for optimum resistance to torsion stress. All welded connections shall be by certified aluminum welders. All parts shall be welded on all sides for optimum strength. Configuration shall provide for applicable rows of seating.

SEATBOARDS: Anodized aluminum ALLOY 6063-T6 extrusions, .078 minimum (+/- .006” industry tolerance) wall thickness, clear anodized finish (204-R1), in accordance with the Aluminum Association Architectural Standard AA-C22A31. Colored anodized plank is available. Plank shall have a standard internal support leg height of 1-3/4”. Seat plank shall be nominal 2” x 10” (actual 1-3/4” x 9-1/2”) with heavy duty clamping channel end caps. End caps are to be attached with aluminum rivets/screws to the underside of the plank. Extrusions shall have serrations on top for safety, and the outside corners shall have a smooth radius for maximum comfort.

FOOTBOARDS: Mill finish aluminum ALLOY 6063-T6 extrusions, .078 minimum (+/- .006” industry tolerance) wall thickness. Plank shall have a standard internal support leg height of 1-3/4”. Extrusions shall have serrations on top for safety and outside corners shall have a smooth radius. Foot plank shall be nominal 2” x 10” (actual 1-3/4” x 9-1/2”) with heavy duty clamping channel end caps. End caps are to be attached with aluminum rivets/screws to the underside of the plank.

RISER BOARDS: Mill finish aluminum ALLOY 6063-T6 extrusions, .080 minimum (+/- .006” industry tolerance) wall thickness. Riser plank shall be 1” x 6” or 1” x 8” plank, or as specified, and shall attach with clip assemblies to the structural frames.

AISLES AND HANDRAIL: All aisles shall have contrasting nose board on step extensions and a handrail of 6061-T6 anodized aluminum schedule 40 extruded pipe. Pipe center handrail for center aisles per code. Side aisles shall have handrail incorporated into the guardrail system.

GUARDRAIL: Solid panels are constructed of 4 gauge galvanized steel 2” x 4” wire mesh framed in welded 2” square aluminum tube. The top rail shall be 42” above the nearest seat on the sides and top row. No opening between the unit and the guardrail shall exceed 4”. The rail is bolted to an angle support bracket, which is bolted into the understructure frames. Vertical square tube panels are also available. The Chain Link guardrail option provides for anodized aluminum ALLOY 6063-T6 extruded pipe of 1.25” minimum O.D.: Supports of Aluminum structural angle 2” x 3” minimum, 9 gauge 2” mesh galvanized fabric, coating ASTM A817, Type 2, Class 2, zinc coated (a plasticized coating is also available in standard colors): Fittings & accessories of aluminum conforming to ASTM B-26. Pipe handrail is placed above the chain link along sides for safety such that the chain link does not extend above the top rail. Speed rail at all corners and change of direction of handrail. All aluminum vertical guardrail panels are also an option.

HARDWARE: Clip assemblies shall consist of an extruded mill finish aluminum clip, carriage bolt and serrated hex nut with 4-way adjustment capability. All structural hardware shall be 7/16” diameter machine bolts with hex nuts and lock washers. All hardware connecting plank to frames shall be 5/16” diameter carriage bolts with serrated hex nuts. For the Tip and Roll units non-marring 5” swivel casters are provided to allow unit to be tilted onto the back of the unit and rolled to a different location. Non-marring rubber pads are supplied for the bottom of frames to protect floors. Transportable units are constructed with tongue guides; wheel sleeves attach to the unit frame for transport.

WARRANTY: All materials and workmanship shall be warranted for a period of one (1) year to be free of all defects, loss of structural strength or finish deterioration due specifically to exposure to varying weather conditions or ultra-violet rays. Damage resulting from abnormal use, vandalism or improper installation will render warranties null and void. Extended warranties are available. Warranty does not apply to powder coated planking or plasticized mesh. Liability is limited to the replacement of defective materials.