This architectural detail shows the head condition of a sectional door intersecting an exterior wall and roof structure. The drawing indicates a vertical lift breakaway door type designated for docks and drive-ins, requiring a minimum clearance of twelve inches below the roof structure. The exterior panel transitions to the door opening, which is sized per the door schedule. An L6x6x1/4 structural angle with 3/4-inch Nelson studs spaced at twenty-four inches on center is embedded at the base.
9 A703 DOOR OPENING SEE SCHEDULE VERTICAL LIFT (BREAKAWAY) @ DOCKS AND DRIVE-INS USE MIN. REQUIRED CLEARANCE 12± ROOF STRUCTURE EXTERIOR PANEL, SEE WALL TYPES L6X6X1/4 W3/4 NELSON STUD @ 24" O.C.
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