Flat oval duct is supported by angle iron duct stiffeners on each side, suspended by threaded steel rods anchored to the roof or floor joists and concrete floor or bolted through the steel deck. Where the duct is located above the ceiling, it hangs directly from the joists.
FLAT OVAL DUCT WHERE DUCT IS ABOVE CEILING ANGLE IRON DUCT HANG FROM JOISTS NOTE: THREADED STEEL ROD ON EXPANSION BOLT INTO ROOF OR FLOOR JOISTS CONCRETE FLOOR OR BOLT STEEL DECK THROUGH STEEL DECK EACH SIDE (DOUBLE WALL) STIFFENERS
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