Flooring system and method for installing involving a corrugated member and a panel flooring member

A flooring system comprising:

• a) a corrugated member having a plurality of substantially parallel and longitudinally extending ribs and valleys, wherein the corrugated member contains metal, wherein each rib has a transverse width of up to three inches, wherein each valley has a top transverse width of up to three inches, wherein a ratio of the transverse top width of each valley to the transverse width of each adjoining rib has a range from 1.0 to 3.5, wherein each valley has a bottom, and wherein each rib has a substantially equal height above the bottom of each adjoining valley;
• b) a panel flooring member having top and bottom sides, wherein the panel flooring member is disposed over and in contact with the corrugated member with the bottom side of the panel flooring member contacting a multiplicity of the ribs of the corrugated member;
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• c) a fastener attaching the panel flooring member to one of the ribs of the corrugated member.

A method for installing a flooring system comprising the steps of:

• a) obtaining a corrugated member having a plurality of substantially parallel and longitudinally extending ribs and valleys, wherein the corrugated member contains metal, wherein each valley has a bottom, and wherein each rib has a substantially equal height above the bottom of each adjoining valley;
• b) obtaining a panel flooring member having top and bottom sides, wherein the panel flooring member has a substantially constant thickness;
• c) disposing the panel flooring member over and in contact with the corrugated member with the bottom side of the panel flooring member contacting a multiplicity of the ribs of the corrugated member;
• d) obtaining a screw including in serial flow relationship a counter-sinkable head, a pair of opposing upper wings, a threaded portion, a pair of opposing lower wings, and a drill bit, wherein the lower wings radially extend more than the drill bit, at least as much as the threaded portion, and less than the upper wings, and wherein the upper wings radially extend more than the threaded portion and less than the head;
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• e) attaching the panel flooring member to one of the ribs of the corrugated member using the screw by inserting the screw first into the top side of the panel flooring member, then out through the bottom side of the panel flooring member, and then into the one rib of the corrugated member with the threaded portion threadably engaged with the one rib.

A flooring system comprising:

• a) a corrugated member having a plurality of substantially parallel and longitudinally extending ribs and valleys, wherein the corrugated member contains metal, wherein each valley has a bottom, and wherein each rib has a substantially equal height above the bottom of each adjoining valley;
• b) a panel flooring member having top and bottom sides, wherein the panel flooring member has a substantially constant thickness, wherein the panel flooring member is disposed over and in contact with the corrugated member with the bottom side of the panel flooring member contacting a multiplicity of the ribs of the corrugated member, and wherein the panel flooring member includes a through hole extending from the top side to the bottom side;
• and
• c) a screw including in serial flow relationship a head disposed in the through hole and countersunk in the top side of the panel flooring member, a pair of opposing upper wings disposed in the through hole, a threaded portion threadably engaged with one of the ribs of the corrugated member but not threadably engaged with the panel flooring member, a pair of locations of broken-off opposing lower wings, and a drill bit disposed below the one rib, wherein the through hole has a diameter below the upper wings which radially extends more than the drill bit, at least as much as the threaded portion, and less than the upper wings, and wherein the upper wings radially extend more than the threaded portion and less than the head.