Orange County NC Website
DocuSign Envelope ID: 313DA256 -1EDE- 4396- A716- 4C53B809027E <br />JERRY M. PASSMORE CENTER ADDITION AND RENOVATION <br />HILLSBOROUGH, NORTH CAROLINA <br />e. Loosening or weakening of fasteners, attachments, and other components. <br />f. Sealant failure. <br />g. Failure of operating units to function properly. <br />B. Structural Loads: <br />1. Wind Loads: As indicated on Drawings. <br />2. Seismic Loads: As indicated on Drawings. <br />C. Deflection of Framing Members: <br />1. Deflection Normal to Wall Plane: Limited to 1/175 of clear span for spans up to 13 feet 6 <br />inches (4.1 m) and to 1/240 of clear span plus 1/4 inch (6.35 mm) for spans greater than <br />13 feet 6 inches (4.1 m) or an amount that restricts edge deflection of individual glazing <br />lites to 3/4 inch (19 nun), whichever is less. <br />2. Deflection Parallel to Glazing Plane: Limited to 1/360 of clear span or 1/8 inch (3.2 <br />mm), whichever is smaller. <br />D. Structural -Test Performance: Provide aluminum -framed systems tested according to <br />ASTM E 330 as follows: <br />1. When tested at positive and negative wind -load design pressures, systems do not <br />evidence deflection exceeding specified limits. <br />2. When tested at 150 percent of positive and negative wind -load design pressures, systems, <br />including anchorage, do not evidence material failures, structural distress, and permanent <br />deformation of main framing members exceeding 0.2 percent of span. <br />3. Test Durations: As required by design wind velocity but not less than 10 seconds. <br />E. Thermal Movements: Provide aluminum- framed systems that allow for thermal movements <br />resulting from the following maximum change (range) in ambient and surface temperatures. <br />Base engineering calculation on surface temperatures of materials due to both solar heat gain <br />and nighttime -sky heat loss. <br />Temperature Change (Range): 120 deg F (67 deg C), ambient; 180 deg F (100 deg C), <br />material surfaces. <br />F. Air Infiltration: Provide aluminum- framed systems with maximum air leakage through fixed <br />glazing and framing areas of 0.06 cfm/sq. ft. (0.03 L/s per sq. m) of fixed wall area when tested <br />according to ASTM E 283 at a minimum static - air - pressure difference of 1.57 lbf/sq. ft. (75 Pa)] <br />[6.24 lbf/sq. ft. (300 Pa). <br />G. Water Penetration Under Static Pressure: Provide aluminum- framed systems that do not <br />evidence water penetration through fixed glazing and framing areas when tested according to <br />ASTM E 331 at a minimum static - air - pressure difference of 20 percent of positive wind -load <br />design pressure, but not less than 6.24 lbf /sq. ft. (300 Pa). <br />H. Condensation Resistance: Provide aluminum -framed systems with fixed glazing and framing <br />areas having condensation - resistance factor (CRF) of not less than 53 when tested according to <br />AAMA 1503. <br />ALUMINUM- FRAMED STOREFRONTS 084110-2 <br />