CONVENTIONAL FIRE-RATED ONE-SIDED CONSTRUCTION
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United States of America Patent
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Issued Date -
Dec 5, 2013
app pub date -
Jun 4, 2012
filing date -
Jun 4, 2012
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Abstract
A fire resistant membrane comprising a plurality of regularly spaced elongated parallel sheet metal framing elements, a first layer of fire rated wallboard attached directly to the framing elements with screws, a side of the framing elements opposite a side bearing the first wallboard layer being substantially free of any directly attached covering layer, a grid of elongated parallel sheet metal shafts overlying the first wallboard and secured to the studs with screws extending through the first wallboard layer, the shafts being oriented at right angles to the studs, and a second layer of fire rated wallboard overlying the shafts and being spaced from the first layer by the shafts, the second layer of wallboard being attached to the shafts with screws having a length insufficient to fully penetrate the first wallboard layer.
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