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DocuSign Envelope ID: B94F2D40-3B3C-47A7-86C2-6F1 B4F92C62C <br /> SECTION 01 7- -L UAPRD INRD @BAD EM ENTBANCES ANM STOBECBONTS <br /> / ABT- U8 ENEBAP <br /> 1.1 SUMMARY <br /> A. This Section includes the following: <br /> 1. Exterior storefront fixed windows. <br /> B. Related sections include the following: <br /> 1. Division 07, Section "Joint Protection"for joint sealants installed as part of aluminum storefront systems. <br /> 2. Division 08, Section "Glazing." <br /> 1.2 SYSTEM DESCRIPTION <br /> A. General: Provide storefront systems capable of withstanding loads and thermal and structural movement <br /> requirements indicated without failure, based on testing manufacturer's standard units in assemblies similar to <br /> those indicated for this Project. Failure includes the following: <br /> 1. Air infiltration and water penetration exceeding specified limits. <br /> 2. Framing members transferring stresses, including those caused by thermal and structural movement, to <br /> glazing units. <br /> 3. Storefront manufacturer to provide all anchoring, strapping, clips, etc., as required by engineering shop <br /> drawings for project conditions. <br /> B. Glazing: Physically and thermally isolate glazing from framing members. <br /> C. Thermally Broken Construction: Provide systems that isolate aluminum exposed to exterior from aluminum <br /> exposed to interior with a material of low thermal conductance. <br /> D. Wind Loads: Provide storefront systems, including anchorage, capable of withstanding wind-load design pressures <br /> calculated according to requirements of authorities having jurisdiction or the American Society of Civil Engineers' <br /> ASCE 7-98, "Minimum Design Loads for Buildings and Other Structures," 6.4.2, "Analytical Procedure,"whichever <br /> are more stringent. <br /> 1. Deflection of framing members in a direction normal to wall plane is limited to 1/175 of clear span or 3/4 inch, <br /> whichever is smaller, unless otherwise indicated. <br /> 2. Static-Pressure Test Performance: Provide storefront systems that do not evidence material failures, structural <br /> distress, failure of operating components to function normally, or permanent deformation of main framing <br /> members exceeding 0.2 percent of clear span when tested according to ASTM E 330. <br /> a. Test Pressure: 150 percent of inward and outward wind-load design pressures. <br /> b. Duration: As required by design wind velocity;fastest 1 mile of wind for relevant exposure category. <br /> E. Seismic Loads: Provide storefront systems, including anchorage, capable of withstanding the effects of earthquake <br /> motions calculated according to requirements of authorities having jurisdiction or ASCE 7, "Minimum Design Loads <br /> for Buildings and Other Structures,"Section 9, "Earthquake Loads,"whichever are more stringent. <br /> F. Dead Loads: Provide storefront-system members that do not deflect an amount which will reduce glazing bite <br /> below 75 percent of design dimension when carrying full dead load. <br /> 1. Provide a minimum 1/8-inch clearance between members and top of glazing or other fixed part immediately <br /> below. <br /> 2. Provide a minimum 1/16-inch clearance between members and operable windows and doors. <br /> G. Live Loads: Provide storefront systems, including anchorage, that accommodate the supporting structures' <br /> deflection from uniformly distributed and concentrated live loads indicated without failure of materials or permanent <br /> deformation. <br /> H. Air Infiltration: Provide storefront systems with permanent resistance to air leakage through fixed glazing and frame <br /> areas of not more than 0.06 cfm/sq. ft. of fixed wall area when tested according to ASTM E 283 at a static-air- <br /> pressure difference of 1.57 Ibf/sq.ft.. <br /> I. Water Penetration: Provide storefront systems that do not evidence water leakage through fixed glazing and frame <br /> areas when tested according to ASTM E 331 at minimum differential pressure of 20 percent of inward-acting wind- <br /> load design pressure as defined by ASCE 7-98, "Minimum Design Loads for Buildings and Other Structures," but <br /> not less than 6.24 Ibf/sq.ft..Water leakage is defined as follows: <br /> 1. Uncontrolled water infiltrating systems or appearing on systems' normally exposed interior surfaces from <br /> sources other than condensation. Water controlled by flashing and gutters that is drained back to the exterior <br /> and cannot damage adjacent materials or finishes is not water leakage. <br /> J. Thermal Movements: Provide storefront systems, including anchorage, that accommodate thermal movements of <br /> systems and supporting elements resulting from the following maximum change (range) in ambient and surface <br /> G#OODEBAN8 MESI8 N 3-1L5 01 7- -L U- 5-0 Deadowlands Mrive,Hillsborough, NC <br /> OBAN8 E CORNTY,NC --2 521 <br />