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A. Panel-Type Sections: Construct panel-type wood door sections complete with glazing stops and glazing, <br /> as shown on drawings. Fabricate stiles and rails of clear, straight, kiln-dried, Douglas fir, West Coast <br /> hemlock, or Sitka spruce, not less than 1-3/4 inches thick. Form meeting rails to provide a rabbeted <br /> weather seal joint. <br /> 1. Panel Inserts: Tempered hardboard, 1/4 inch thick,smooth two sides,exterior grade complying <br /> with ANSI A 135.5. <br /> B. Flush-Type Sections: Construct flush-type wood door sections with top,bottom and end <br /> closures of clear, straight,kiln-dried Douglas fir, West Coast hemlock,or Sitka spruce. Provide wood blocking <br /> to receive hazdware,end stiles and frames for glazing,glued and doweled in place. Form meeting rails to provide <br /> rabbeted weather seal joint. <br /> C. Fabricate sections of either mortise-and-tenon construction with waterproof glue and steel <br /> dowels,or rabbeted construction,doweled and steel-pinned and glued with waterproof glue. <br /> D. Fabricate sections so that finished door assembly is rigid,and free of warp,twist or <br /> deformation. <br /> E. Treat sections with a minimum 3-minute immersion in a water-repellent treatment. <br /> F. Reinforce sections with continuous,galvanized-steel horizontal and diagonal members as <br /> required by door widdi and to meet wind loading. <br /> G. Prime door sections with one coat of exterior primer,compatible with field-applied finish, <br /> applied to provide a minimum 1-mil dry film thickness. <br /> 2.3 ALUMINUM SECTIONS <br /> A. Construct door sections with extruded aluminum shapes of 6063-T6 alloy,with wall <br /> thiclrness not less than 0.065 inch for door section 1-3/4 inch deep. Join stiles and rails together with concealed <br /> 1/4-inch minimum diameter aluminum or nonmagnetic stainless steel through-bolts, full height of section. <br /> Fabricate panels of aluminum sheet set in continuous vinyl channels and retained with rigid snap-in extruded <br /> moldings. <br /> 1. Finish doors with manufacturer's standard mill finish. <br /> 2. Finish doors with manufacturer's standard clear anodizing. <br /> 3. Finish doors with manufacturer's standard conversion coating and primer for on-site finish <br /> painting. <br /> 4. Finish doors with manufacturer's standard thermosetting paint system. <br /> 2.4 TRACKS,SUPPORTS,AND ACCESSORIES <br /> A. Tracks: Provide manufacturer's standard,galvanized-steel track system, sized for door size <br /> and weight,and designed for clearances shown. Provide complete track assembly including brackets,bracing and <br /> reinforcing for rigid support of ball-bearing roller guides for required door type and size. Slot vertical sections of <br /> track at 2 inches o.c.for door-drop safety device. Slope tracks at proper angle from vertical,or otherwise design <br /> to ensure tight closure at jambs when door unit is closed. Weld or bolt to track supports. <br /> B. Track Reinforcement and Supports: Provide galvanized-steel track reinforcement and <br /> support members. Secure,reinforce and support tracks as required for size and weight of door to <br /> provide strength and rigidity without sag,sway,and vibration during opening and closing of doors. <br /> C. Support and attach tracks to opening jambs with continuous angle welded to tracks and <br /> attached to wall. Su�ort horizontal (ceiling tracks)with continuous angle welded to track and supported by <br /> laterally braced attachments to overhead structural members at curve and end of tracks. <br /> D. Weather Seals: Provide continuous rubber,neoprene,or flexible vinyl adjustable <br /> weatherstrip gasket at tops and compressible astragal on bottoms of each overhead door. <br /> Page 2 of 4 <br />