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SECTM as ACTUAL HOOF NET
LENOIR @AW SEAT] ROWS aEATI
51.5 Ntuo 61(0 61
116 SW EOl 61
235 17.01) 11.03 11
7 ..67 400
203 203
4.67 400
25.6 1700 17.00 Il
6 300 2.00 National Recreation Systems, Inc.
1 4 5 40p
156 Got EM P.O. B06 11K1 05 W.YNE. H 16•661y)
lE1E TI 501 _ w.1 N 65. Iwwwo.. ww
MNEIGNW SPA �. H'L 2/1 /11 x NEN
us a.. Ppaml�am mesas,
TOTAL NET SW ONE PER SET' SW >�i �.-++ prNON-ELEV. 10 ROW 91'-fi BLEACHER SEATING PLAN
WSW ifi-/9t SEAT) �� 1'4"NSIC0910606B0
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• • N-I091.5AH
Bleacher Specifications
Non-Elevated Aluminum Angle Frame
SECTION 13125
NON-ELEVATED ALUMINUM ANGLE FRAME BLEACHERS
PART 1 -GENERAL
1.01 SECTION INCLUDES
A. Design and fabrication of Non-Elevated angle frame bleachers
• 1.02 QUALITY ASSURANCE
A. Manufacturer: National Recreation Systems, Inc.
P.O. Box 11487 Fort Wayne, In 46858-1487
B. Manufacturer Qualifications: Manufacturer must have a minimum of ten years experience in the
design and manufacture of bleachers.
C. Welders must conform to AWS standards.
D. Source Quality Control: Mill Test Certification.
E. Codes and Standards: 2009 International Building Code/ICC 300 2007.
1.03 WARRANTY
A. Warranty shall guarantee bleachers to be free from defect in materials and workmanship for a
period of 1 year under normal use.Warranty period shall begin on date of completion for projects
installed by manufacturer, or its subcontractors, OR warranty period shall begin on date of final
delivery on projects installed by others.
B. Anodized finish of plank extrusions shall be covered by a 5 year warranty against loss of structural
strength or finish deterioration due to exposure to weather conditions or UV rays:Discoloration of
mill finish aluminum due to galvanic reaction not covered.
1.04 PRODUCT LIABILITY INSURANCE
A. Product liability insurance is carried for the life of the product in the amount of$2,000,000.
1.05 ENGINEERING
A. Engineering certifications and calculations by a Registered Professional Engineer will be provided
upon request.
PART 2—PRODUCTS
2.01 ACCEPTABLE MANUFACTURER
A. National Recreation Systems, Inc.
2.02 DESIGN
A. Applicable Codes:
INTERNATIONAL BUILDING CODE(IBC), 2009 EDITION/ICC 300 2007
B. Design Loads:
1. Live Loads: Uniform loading-Structure= 100 psf
Uniform loading-Seat and Foot plank= 120 plf
2. Sway Loads: Perpendicular to seats= 10 plf
Parallel to seats= 24 plf
3. Guardrail Loads: Uniform vertical load = 100 plf
Uniform horizontal load= 50 plf
Concentrated horizontal load= 200 pounds
4. 'Wind Loads: Basic design wind speed= 150 mph (exposure"B")
*Note: Bleacher must be anchored to meet wind loads above
2.03 NON-ELEVATED ANGLE FRAME BLEACHERS
A. Quantity and Size: Shall consist of 1 unit(s) 10 rows high x 91'-6" long.
Net seating capacity per unit 501 + 6 HC (excluding aisles, based on 18" per seat).
B. Framework: Prefabricated aluminum angle spaced at 6'-0"intervals joined by means of
aluminum angle cross bracing.
C. Shop connections: Welded to meet AWS standards and local code requirements
National Recreation Systems, Inc. 5120 Investment Drive Fort Wayne, IN 46808
• • N-1091.5AH
D. Joint Sleeve Assembly: Internal splices, where required shall be two per joint, and shall penetrate the
joint a minimum of 8° in each direction and be riveted at one end only to allow for contraction and
expansion.
E. Rise and Depth Dimensions: 8"vertical rise and 24"tread depth, Seat height is 17"above its
respective tread.
F. Seats: Nominal 2"x 10"anodized aluminum with anodized end caps.
G. Treads: Nominal two(2)2"x 10"mill finish aluminum with anodized end caps on rows 2&up.
H. Risers: Nominal two(2) 1"x 6"mill finish aluminum with mill finish end caps on top row.
Nominal 1"x 6° mill finish aluminum with end caps on all other rows..
I. Aisles: Aisle footboards shall be of aluminum alloy 6063-T6 and be of mill finish with contrasting
aisle markings. Three aisle stiffener angles shall be used to strengthen the aisle step. There shall be
3 aisle(s) 54" wide.
J. Aisle Handrail: Anodized aluminum pipe with intermediate rail.
K. Guardrail: Rails shall be anodized aluminum tube with end plugs and elbows where required.
All Rails shall be secured to angle supports with galvanized fasteners. Top rails at sides, rear and
front shall be 42"above the leading edge of seat or walking surfaces. Rear rail support members
shall be aluminum channel, side and front rail support s shall be aluminum angle.
1. Chainlink System: Fencing shall consist of 9 gauge, 2" mesh galvanized chainlink fabric, heavy
duty tension bands,tension bars, brace bands, combo rail endcaps, and wire ties.
L. Handicapped Accessibility: Shall be provided as required by the code listed above.
2.04 MATERIALS/FINISHES
A. Framework:
1. Aluminum: Structural fabrication with aluminum alloy 6061-T6 mill finish. Each frame shall be
unit-welded, using metal inert gas method, under guidelines by the American Welding Society.
After fabrication all steel is hot dipped galvanized to ASTM A-123 specifications.
All crossbracing and horizontal bracing shall be aluminum angle 6061-T6 mill finish.
B. Extruded Aluminum:
1. Seat planks:Aluminum.alloy 6063-T6, clear anodized 204R1, AA-M10C22A31, Class II
With a wall thickness nominally .078"for impact and deformation resistance.
2. Tread and Riser Planks:Aluminum alloy 6063-T6, mill finish. With a wall thickness nominally
.078"for impact and deformation resistance.
3. Guardrail Pipe: 1-5/8 OD schedule 40 aluminum alloy 6105-T5, clear anodized 204R1,
AA-M10C22A31, Class II.
C. Accessories:
1. Channel End Caps: Aluminum alloy 6063-T6, clear anodized 204R1,AA-M10C22A31,Class II.
2. Hardware: Bolts and Nuts shall be hot dipped galvanized.
3. Hold Down Clip Assembly:Aluminum alloy 6063-T6 mill finish.
4. Joint Sleeve Assembly: Aluminum alloy 6061-T6, mill finish.
PART 3—EXECUTION
3.01 INSTALLATION
A. Install bleacher unit in accordance with manufacturer written instructions and shop drawings.
Note: Building codes may vary from site to site.The customer is responsible for verification of local code
requirements.
National Recreation Systems, Inc. 5120 Investment Drive Fort Wayne, IN 46808
: • •
BLEACHER SITE AND ANCHORING REQUIREMENTS
1) General Requirements:
A) The site on which the bleacher is to be placed shall consist of a minimum soil bearing of 1,000 psf.
B) The site shall be clear of all obstacles(ie. light poles, utilities, or other obstructions), unless special
construction is specifically stated in the Bid or Quote.
C) The surface may be sloped a maximum of 1/8 inch per foot for drainage. The maximum overall out of level
slope perpendicular to the seats(front to rear)shall not exceed 2"and parallel to the seats(end to end)shall
not exceed 4". Variations in flatness shall not exceed 5/16"below a 10-foot straightedge.
D) Bleachers shall be anchored to resist overturning from wind forces, and to be in compliance with many local
codes.
2) Methods of Anchoring
Anchoring bleachers can be accomplished in several ways at the discretion of the owner and the soil conditions at the
site. It is recommended that the bleachers be attached to concrete foundations or be secured with auger type soil
anchors.
A) Concrete Foundations:
Minimum concrete foundation options include: (1)a 5-inch thick reinforced concrete slab(2)a 12-
inch wide by 24-inch deep concrete strip foundation under each bleacher frame or(3) sufficient
drilled concrete piers to anchor the bleachers. Frost lines, soil conditions, or other conditions may
indicate a need for additional depth or reinforcement of concrete. Contact us for specific concrete
specifications.
B)Auger Anchors:
Auger type soil anchors are generally recommended when the owner intends to set the bleacher on
wood groundsills, or where concrete may not be practical. Auger type soil anchors consist of
augers that are driven into the soil, and hold down straps which secure the bleacher frames to the
embedded augers. A specialized auger drive machine is required for installation of augers. When auger a
anchors are to be installed, it is required that the soil (stone, gravel, etc.)not contain large rocks, or other
compacted material which may prohibit or severely impede such auger anchor installation.
3) Site Soil Requirements
Since the soil type dictates the type of foundation or anchors that can be used, it is recommended that the owner
engage the services of a local soil-testing agency to investigate and to furnish a soil report. The soil shall be
described in accordance with the Unified Classification System and blow counts shall be furnished in accordance
with ASTM D1586. If the owner furnishes incorrect or insufficient soil information the resultant anchoring
method may prove inadequate to resist loads at the risk of the owner.
Bleacher Anchor Requirements 04/17/09
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