Structural · S-V5Q2Q

Suspended Loads From Metal Deck

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Suspended load attachments from a metal roof deck comprise four distinct configurations utilizing hanger rods, plate washers, angles, and self-drilling screws. A supplier-provided hanger rod is secured through a metal roof deck flute with a quarter-inch by four-inch plate, supporting up to sixty pounds maximum per flute with a two-inch minimum spacing and restricted to one point load per bay. An L3x3x1/4 angle is incorporated under the flute and secured with two number eight self-drilling screws. A quarter-inch by one-and-a-half-inch by one-and-a-half-inch plate washer supports up to thirty pounds maximum per flute. A hanger is offset within the flute using two number eight self-drilling screws, limited to fifteen pounds maximum per flute. General notes specify that suspended loads from the roof deck are prohibited for deck spans greater than seven feet and single spans greater than six feet, requiring a minimum twenty gauge deck where a bay is defined as the area between beams or joists.

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