Laserfiche WebLink
2. All structural components, including meeting rails, mullions and anchors shall be <br />designed accordingly, complying with deflection and stress requirements of <br />Paragraph 1.02 B. <br />3. Curtain Wall assemblies can use existing steel frame located to the interior of the <br />existing curtain wall assemblies for additional lateral bracing. <br />4. Curtain walls will incorporate a thermal break between the inner and outer <br />aluminum components. The thermal break shall be of a durable low- conductive <br />material and %" minimum thickness. <br />5. The insulated glazing unit will incorporate a warm edge spacer <br />B. Air, Water and Structural Performance Requirements <br />1. When tested in accordance with cited test procedures, curtain walls shall meet or <br />exceed the following performance criteria for Architectural Performance Curtain <br />Walls. <br />2. Air Test Performance Requirements <br />a. Air infiltration maximum 0.06 cfm per square foot at 6.24 psf pressure <br />differential when tested in accordance with ASTM E283. <br />3. Water Test Performance Requirements <br />a. There shall be no leakage at a static air pressure differential of 12 psf (575 Pa) <br />as defined in AAMA 501 when tested in accordance with ASTM E331. <br />4. Structural Test Performance Requirements <br />a. Uniform Load Deflection Test <br />i. No deflection of any unsupported span L of test unit (framing rails, <br />muntins, mullions, etc.) in excess of L/175 at both a positive and negative <br />load of 40 psf (design test pressure) when tested in accordance with ASTM <br />E330. <br />ii. Structural reinforcing that is not standard on units being furnished is not <br />allowed. <br />b. Uniform Load Structural Test <br />i. Unit to be tested at 1.5 times the specified design load both positive and <br />negative, acting normal to plane of wall in accordance with ASTM E330. <br />ii. No glass breakage; permanent damage to fasteners, hardware parts, or <br />anchors; damage to make windows inoperable; or permanent <br />deformation of any main frame or ventilator member in excess of 0.2% of <br />its clear span. <br />C. Condensation Resistance and Thermal Transmittance Performance Requirements <br />1. Perform thermal tests in accordance with the configuration specified in AAMA <br />1503.1. <br />a. Thermal Transmittance ( "U" Factor) shall not exceed 0.40 BTU /hr /sf /deg F at <br />15 mph exterior wind. <br />b. Condensation Resistance Factor (CRF) requirements: CRF minimum 72 <br />(Frame) and CRF minimum 65 (specimen). <br />1.03 SUBMITTALS <br />A. General Requirements <br />2 <br />Natatorium Window Replacement Exhibit A <br />36 <br />