A 42-inch high hatch-mounted guard rail is positioned on open sides above a roof hatch access opening. A self-closing gate is verified to open to 90 degrees. Minimum service aisle clearances include 21 inches maximum clearance, a 2-foot 6-inch clearance, 8 inches minimum vertical dimension, and 6 inches at the hatch mounting interface.
21" MAX. CLR. 2'-6" MIN. SERVICE AISLE 2'-6" CLR. 42" HIGH HATCH MOUNTED GUARD RAIL ON OPEN SIDES SELF CLOSING GATE, VERIFY OPENABLE TO 90 DEGREES 6" 8" MIN.
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