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Orange County Facility Renovations <br />Hillsborough, NC <br /> <br /> <br /> <br />Smith Sinnett ACOUSTICAL PANEL CEILINGS <br />2020046/2020047/2020048/2020049/2020055 09 51 13 - 3 <br />2.3 METAL SUSPENSION SYSTEM <br />A. Manufacturers: Subject to compliance with requirements, provide products by one of the following: <br />1. Armstrong World Industries, Inc. <br />2. CertainTeed Corporation. <br />3. Rockfon (Rockwool International). <br />4. USG Corporation. <br />B. Metal Suspension-System Standard: Manufacturer's standard, direct-hung, metal suspension system and <br />accessories according to ASTM C635/C635M. <br />C. Wide-Face, Capped, Double-Web, Steel Suspension System: Main and cross runners roll formed from <br />cold-rolled steel sheet; prepainted, electrolytically zinc coated, or hot-dip galvanized, G30 coating <br />designation; with prefinished 15/16-inch-wide metal caps on flanges. <br />1. Structural Classification: Intermediate-duty system. <br />2. End Condition of Cross Runners: Override (stepped) or butt-edge type. <br />3. Face Design: Flat, flush. <br />4. Cap Material: Cold-rolled steel. <br />5. Cap Finish: Painted white unless otherwise indicated <br />2.4 ACCESSORIES <br />A. Attachment Devices: Size for five times the design load indicated in ASTM C635/C635M, Table 1, <br />"Direct Hung," unless otherwise indicated. Comply with seismic design requirements. <br />B. Hold-Down Clips: Manufacturer's standard hold-down. <br />C. Impact Clips: Manufacturer's standard impact-clip system designed to absorb impact forces against <br />acoustical panels. <br />2.5 METAL EDGE MOLDINGS AND TRIM <br />A. Roll-Formed, Sheet-Metal Edge Moldings and Trim: Type and profile indicated or, if not indicated, <br />manufacturer's standard moldings for edges and penetrations that comply with design requirements; <br />formed from sheet metal of same material, finish, and color as that used for exposed flanges of <br />suspension-system runners. <br />PART 3 - EXECUTION <br />3.1 PREPARATION <br />A. Measure each ceiling area and establish layout of acoustical panels to balance border widths at opposite <br />edges of each ceiling. Avoid using less-than-half-width panels at borders unless otherwise indicated. <br />B. Layout openings for penetrations centered on the penetrating items. <br />3.2 INSTALLATION <br />A. Install acoustical panel ceilings according to ASTM C636/C636M and manufacturer's written <br />instructions. <br />B. Suspend ceiling hangers from building's structural members and as follows: <br />1. Install hangers plumb and free from contact with insulation or other objects within ceiling plenum <br />that are not part of supporting structure or of ceiling suspension system. <br />2. Splay hangers only where required to miss obstructions; offset resulting horizontal forces by <br />bracing, counters playing, or other equally effective means. <br />DocuSign Envelope ID: 09980A3B-0691-41B4-854D-3865F2287392