REFERENCES
American Architectural Manufacturers Association (AAMA):
- AAMA/NWWDA 101/I.S. 2-97 - Voluntary Specification, Performance Requirements and Test Procedures for Air Leakage Resistance, Water Penetration Resistance, Structural Loading, Forced Entry Resistance.
- AAMA-501.1 - Standard Test Method for Water Penetration of Windows, Curtain Walls and Doors Using Dynamic Pressure
- AAMA 501.4 - Recommended Static Test Method for Evaluating Curtain Wall and Storefront Systems Subjected to Seismic and Wind Induced Interstory Drifts.
- AAMA 2605 - Voluntary Specification, Performance Requirements and Test Procedures for Superior Performing Organic Coatings on Aluminum Extrusions and Panels.
ASTM International (ASTM):
- ASTM B 221 - Standard Specification for Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire, Profiles, and Tubes.
- ASTM E 283 - Test Method for Determining the Rate of Air Leakage Through Exterior Windows, Curtain Walls, and Doors under Specified Pressure Differences across the Specimen.
- ASTM E330 - Standard Test Method for Structural Performance of Exterior Windows, Doors, Skylights and Curtain Walls by Uniform Static Air Pressure Difference.
- ASTM E 331 - Test Method for Water Penetration of Exterior Windows, Curtain Walls, and Doors by Uniform Static Air Pressure Difference.
- ASTM E 1886 - Standard Test Method for Performance of Exterior Windows, Curtain Walls, Doors, and Impact Protective Systems Impacted by Missile(s) and Exposed to Cyclic Pressure Differentials.
- ASTM E 1996 - Standard Specification for Performance of Exterior Windows, Curtain Walls, Doors and Impact Protective Systems Impacted by Windborne Debris in Hurricanes.
National Fenestration Rating Council (NFRC):
- NFRC-100 - Procedure for Determining Fenestration Product U-factors.
- NFRC-200 - Procedure for Determining Fenestration Product Solar Heat Gain Coefficient and Visible Transmittance at Normal Incidence.
Wind load design
Mullion deflection is limited per AAMA TIR-A11-04 deflection is limited to L/175 for spans up to 13'-6" and L/240 for spans beyond 13'-6"allowable stress for 6063-T6 aluminum alloy = 15000 p.s.i. allowable stress for A-36 steel = 21600 p.s.i.
maximum deflection was based on the following equation: maximum bending moment was based on the following equation: assumptions:W = total uniform load
L = length of mullion between anchors E = 10 X 106 p.s.i. I = moment of inertia of the mullion M = maximum bending moment
* mullions are assumed to have equal size glass lights each side check with local code requirements for acceptance of AAMA TIR-A11
Dead load design
horizontal mullion deflection is limited to L/360 or 1/8" (whichever is less) curves represent limitations based on 2 point loads, equal in magnitude both located at 1/8 or 1/4 point of the horizontal mullions length allowable stress for 6063-T6 aluminum alloy = 15000 p.s.i. allowable stress for A-36 steel = 21600 p.s.i. maximum deflection was based on the following equation: Pa 24EI (3L2 - 4a2) maximum bending moment was based on the following equation: M = Pa assumptions: P = 1/2 glass weight a = 1/4 or 1/8 point of span (in inches) E = 10 X 106 p.s.i. I= moment of inertia of the mullion L = length of horizontal mullion