This architectural detail shows a portal header junction integrating metal stud framing with tenant drywall, cementitious backer board, and a structural joint. The exterior face is finished with scheduled stone tile or scheduled mirror glass held by metal Z-clips and 1-1/2 inch by 1-1/2 inch Z-bracket furring channels. A MT25 steel plate with 2x2 inch metal tabs welded at 16 inches on center provides attachment without exposed fasteners. An angle trim and sealant with cylindrical sealant backing seal the joint, while a 1-3/4 inch by 1-3/4 inch by 1/8 inch prefinished aluminum angle with color matching the base completes the transition.
STEEL PLATE BEYOND SCHEDULED MIRROR GLASS METAL Z CLIPS 6" 1 1/2" X 1 1/2" Z-BRACKET FURRING CHANNELS DRYWALL BY TENANT MT25 STEEL PLATE, NO EXPOSED FASTENERS 2X2 METAL TABS 16" O.C. WELDED TO METAL PLATE METAL STUD 1/4" 3/8" 1 1/2" CEMENTITIOUS BACKER BOARD ALIGN GALVANIZED METAL CLIP SCHEDULED STONE TILE CEMENTITIOUS BACKER BOARD METAL FRAMING DRYWALL BY TENANT MT25 STEEL PLATE, NO EXPOSED FASTENERS 2X2 METAL TABS 16" O.C. WELDED TO METAL PLATE ANGLE TRIM SEALANT W/ CYLINDRICAL SEALANT BACKING PORTAL HEADER ALIGN W/ PORTAL HEADER ALIGNED WITH SHAFT WALL WHERE OCCURS, REFER TO PLANS 1-3/4" x 1-3/4" x 1/8" PREFINISHED ALUMINUM ANGLE. COLOR TO MATCH BASE SCHEDULED GLASS METAL Z CLIPS 1 1/2" X 1 1/2" Z-BRACKET FURRING CHANNELS 1/4" STRUCTURAL JOINT DRYWALL BY TENANT 1/4" CEMENTITIOUS BACKER BOARD
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