ANGLE FRAME BLEACHERS
PART 1 -
1.01 SECTION INCLUDES
- Design and fabrication of angle frame bleachers
1.02 QUALITY ASSURANCE
- Manufacturer: National Recreation Systems, Inc.
5120 Investment Drive Fort Wayne, In 46858-1487
Distributed by Basketball-Goals.com 866-892-7277 email
web site :
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
D. Source Quality Control: Mill Test
E. Codes and Standards: 2003 International
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.
Anodized finish of plank extrusions shall be covered
by 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
Engineering certifications and calculations by a
Engineer will be provided upon request, for a fee.
PART 2 ? PRODUCTS
A. National Recreation Systems,
Inc. Distributed by Basketball-Goals.com
INTERNATIONAL BUILDING CODE (IBC), 2003 EDITION
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
Uniform horizontal load = 50 plf
Concentrated horizontal load = 200 pounds
4. *Wind Loads: Basic design wind speed = 150 mph
Bleacher must be anchored to meet wind loads above
2.03 ANGLE FRAME
A. Quantity and Size: Shall
consist of ___ unit(s)
___ rows high x ___
' - ___" long.
Net seating capacity per unit ___ excluding
aisles, based on 18" per seat).
Framework: Prefabricated aluminum angle or galvanized
steel angle at
max. 6' spacing joined by means of aluminum angle cross
connections: Welded to meet AWS standards and local code
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
Rise and Depth Dimensions: 8? vertical rise and 24?
tread depth, Seat height is
17? above its respective tread. (Except low rise & 3
Nominal 2? x 10? anodized aluminum with
anodized end caps.
Treads: Nominal one (1) or optional two (2)
2? x 10? mill finish aluminum with
anodized end caps on rows 2 and up.
Risers: Nominal 2? x 10? mill finish
aluminum with end caps on top row.
Nominal 1? x 6? mill finish aluminum with end caps on
all other rows.
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
___ aisle(s) ___" wide.
Aisle Handrail: Anodized aluminum pipe with intermediate
K. Guardrail: Rails shall be anodized aluminum
tube with end plugs and elbows where
required. All Rails shall be secured to
support 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, ension bars, brace
bands, combo rail endcaps,
and wire ties.
2. Vertical Picket System: Aluminum pipe and bar
anodized after fabrication &
attached to supports with galvanized fasteners.
2.04 MATERIALS / FINISHES
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. Galvanized Steel: ASTM A36/A & A529/A
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
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.
Tread and Riser Planks: Aluminum alloy 6063-T6, mill
finis 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.
4. Handrail Pipe: 1-5/8 OD schedule 40 aluminum
alloy 6105-T1, clear anodized
204R1, AA-M10C22A31, Class II.
1. Channel End Caps: Aluminum alloy 6063-T6, clear
AA-M10C22A31, Class II.
2. Hardware: Bolts and Nuts shall be hot dipped
3. Hold Down Clip Assembly: Aluminum alloy 6063-T6
4. Joint Sleeve Assembly: Aluminum alloy 6061-T6,
PART 3 ?
A. Install bleacher unit in accordance with
manufacturer written instructions and
codes may vary from site to site. The customer is
responsible for verification of
local code requirements.