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Architectural Specification


PART 1 – GENERAL


1.1 SUMMARY


A.  The Tensioned Fabric Structure Manufacturer (hereafter referred to as “TFS Manufacturer”) shall be responsible for the design, engineering, fabrication, supply and installation of the work specified herein. The intent of this specification is to have single source responsibility for the above functions.

B.  Performance Requirements: The TFS Manufacturer shall be responsible for the configuration, fabrication and erection of the tensioned membrane structure. All materials provided shall be new and unused.

C. Erection of the complete system shall be the responsibility of the same firm designing and manufacturing the building.

D. The fabric structure shall be a cable and/or frame supported tensioned membrane structure. The fabric shall have low elongation characteristics under tension and shall assume an anticlastic configuration. Structures that have designs incorporating fabric in a flat or mono-axially curved configuration at any location in the roof will not be acceptable.

E. Provide a structure as shown in the drawings and described in this specification. Foundations and anchoring for the structure shall be the responsibility of General Contractor or the TFS Manufacturer.


1.2 SUBMITTALS


A.  Data: Manufacturer product data, including specifications and installation instructions for each component of the TFS. Include laboratory test reports and other data, where applicable.
 
B.  Engineering drawings: 11” x 17”, dimensioned drawings for the TFS signed and sealed by a licensed civil or structural engineer. Include plan view, elevations, details, sections, connections, and anchorage/footings.

C. Samples: Fabric, 8 ½” x 11” minimum

D. Structural calculations: Signed and sealed by a registered structural or civil engineer specializing in TFS design and engineering.

D. Structural calculations: Signed and sealed by a registered structural or civil engineer specializing in TFS design and engineering.


1.3 QUALITY ASSURANCE


1.  Have been in continuous operation as a professional fabric Tension Structure manufacturer for a minimum of  five years prior to this contract.

2.  Hold a valid general contractor’s license for a minimum of  two years.

3.  Welder Qualifications: The personnel manufacturing the metal awning frames must be certified welders.

4 . Provide written Welding Procedure Specifications.

5.  Professional Engineer Qualifications: A professional engineer who is legally authorized to practice in the jurisdiction where project is located and who is experienced in providing engineering services for installing Tensioned Fabric Structures similar to those indicated for this project and with a record of successful in service performance.
 
6.  Hold daily Safety Tail Gate Meetings before start of installation work.

7.  When forklifts are used at the job site, the operator must be Fork Lift Operation Trained.

8.  The Tension Structure fabricator must provide proof of full-time Quality Assurance manager.

9.  The Tension Structure manufacturer must provide proof of workers compensation insurance coverage.

10  TFS Manufacturer is required to be a current member of a professional trade association, i.e., Lightweight Structures Association.


1.4 WARRANTY


A.  Warrant frame materials and workmanship against defects for a period of 1 year from date of substantial completion of the work. embrane structure will meet all applicable codes.

C.  The strB.  Warrant fabric materials and workmanship against defects for a period of 4 to 7 years (depending on selected and approved fabric), on a prorated basis, from the date of substantial completion of the work and/or offer the same warranty offered by the fabric mill that manufactured or supplied the fabric.


1.5 DESIGN

  The structural design shall comply with applicable codes and regulations. ions for the fabric structure shall include:

a.  Large deflection numerical shape generation that will insure a stable, uniformly stressed, three dimensionally curved shape that is in static equilibrium with the internal prestress forces and is suitable to resist all applied loads.

b.  Large deflection finite element method structural analysis of the membrane system under all applicable wind, seismic and snow loads.

c.   Finite element method structural analysis of the support frame system.

d. 

1.  Based on the structural calculat1. Based on the structural calculations as defined in this section, prepare structural design drawings defining the complete structure, precise interface geometry determination, reaction loads imposed on foundations, anchoring loads, connection details, interfaces and seam layouts.

2.  Structural calculations for the fabric structure shall include:
 

a.  Large deflection numerical shape generation that will insure a stable, uniformly stressed, three dimensionally curved shape that is in static equilibrium with the internal prestress forces and is suitable to resist all applied loads.

b.  Large deflection finite element method structural analysis of the membrane system under all applicable wind, seismic and snow loads.

c.   Finite element method structural analysis of the support frame system.

d.  Member sizing calculations of all primary structural members.

e.  Connection design including bolt, weld and ancillary member sizing.



1.6 REGULATO1.6 REGULATORY REQUIREMENTS


A.   Conform to applicable code for fire resistance ratings for Tensioned Fabric Structure covering.

B   EPP's include products that have low VOC content, high recycled content, and are manufactured, fabricated, or extracted within 500 miles of the construction site.

PART – 2  MATERIALS


 ARCHITECTURAL FABRIC MEMBRANE MATERIALS:

1.  PVC (Polyvinyl Chloride) :
 

a.   Raw Material: Polyester

b.   Construction: PVC/PVDF Coated Polyester

c.  Tensile Strength: to meet requirements of engineer

d.   Light Transmission: 8% - 14%, depending on required strength

e.   Coe.   Color: White f.  Expected Service Life: 10 Years (Warranty is 5 Years)

 


2. HDPE (High Density Polyethylene)E (High Density Polyethylene)
 

a.   Mesh fabric made from UV stabilized HDPE

b.   Fire Retardancy: NFPA 701

c.   Sewn with PTFE thread in a zig-zag stitch to prevent failure under tension

d.  Color: As approved by architect/owner from available selection

f.   Expected Service Life: 10 Years (Warranty 5 Years)



PART – 3  STRUCTURAL STEEL FRAMING


1.   Structural frame shall be fabricated from structural steel using standard shapes. The steel shall be minimum ASTM A36 for standard profiles and A500 Grade B for structural tubes.

2.   The fabrication of the steel shall be in accordance with guidelines set forth in the AISC steel design manual and the AWS code of structural welding. All welds shall be in accordance with manufacturers design and performed prior to shipping. No welding shall be performed in the field unless authorized in writing by the Owner or Owner’s representative.

3.  The structural members shall be fabricated in as large segments as possible to minimize field joints.

4.   All segments of the assembly will be welded or stamped with the appropriate part number in a manner that will still be Visible after powder coating is applied.

5.  Grind all corners and sharp edges.

6.  The steel shall be polyester powder painted to a minimum of 3 mils.

7.   Steel will require abrasive blasting and primer before application of the polyester powder paint finish.





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