Abstract: A blade for a vertical windmill includes an arcuate blade member having an interior surface and an exterior surface, the arcuate blade member including at least one aperture extending through the arcuate blade member; and at least one layer of flexible sheet material applied to the exterior or interior surface of the arcuate blade member, the at least one layer of flexible sheet material covering the at least one aperture in the arcuate blade member on the exterior or interior surface.

Abstract: According to the present invention, an acoustic deck includes a deck member defining a cavity and a movable tunable insert disposed at least partially within the cavity of the deck member. The tunable insert is rotatable or translatable relative to the deck member to alter acoustic effects of the acoustic deck. The acoustic deck can be installed in a room, and the acoustic tunable insert rotated or translated in order to achieve desired acoustic effects in the room. Also disclosed is a system of acoustic decks and a method of operating the acoustic deck.

Abstract: According to the present invention, an acoustic deck includes a deck member defining a cavity and a movable tunable insert disposed at least partially within the cavity of the deck member. The tunable insert is rotatable or translatable relative to the deck member to alter acoustic effects of the acoustic deck. The acoustic deck can be installed in a room, and the acoustic tunable insert rotated or translated in order to achieve desired acoustic effects in the room. Also disclosed is a system of acoustic decks and a method of operating the acoustic deck.

Abstract: A deck assembly includes a plurality of deck panels in a side-by-side and end-by-end relationship. The deck panels include a support having a pair of opposed sides, opposed ends, and an arcuate portion having a convex surface and an opposite concave surface between and connected to a pair of spaced extensions. An elongated structural cover is positioned over the arcuate portion and attached to the support. The cover provides structural stability to the deck panel. Optionally, layers of insulation or a layer of concrete overlays the structural cover and exposed portions of the support between the covers. Optionally, the deck assembly can be made of acoustical deck panels.

Abstract: A deck assembly includes a plurality of deck panels in a side-by-side and end-by-end relationship. The deck panels include a support having a pair of opposed sides, opposed ends, and an arcuate portion having a convex surface and an opposite concave surface between and connected to a pair of spaced extensions. An elongated structural cover is positioned over the arcuate portion and attached to the support. The cover provides structural stability to the deck panel. Optionally, layers of insulation or a layer of concrete overlays the structural cover and exposed portions of the support between the covers. Optionally, the deck assembly can be made of acoustical deck panels.

Abstract: A roofing assembly that includes a profiled roof deck plate attached to an adaptor for receiving and securing skylights to a roof structure.

Abstract: A roofing assembly that includes a profiled roof deck plate attached to an adaptor for receiving and securing skylights to a roof structure.

Abstract: A ribbed metal plate for a composite slab that includes a substantially planar plate having an upper surface and a lower surface and a plurality of laterally-spaced, longitudinally-extending ribs that have a keystone profile and wherein the sidewalls are angled toward each other. Ends of the ribs are integrally formed. The rib plate is secured to bearing walls in a structure and concrete is poured on the ribs to form a composite deck. The ends of the ribs extend in the lateral direction to form a composite structure retarding movement of cured concrete in a longitudinal direction. The ribbed plate can also be used in composite beams.

Abstract: The present invention pertains to a long-span decking panel. The long-span decking panel is used, for instance, to span the space between girders to create a roof or a composite floor. The panel has a flange member having a first edge and a second edge. The edges are at least 11 inches apart. The flange member defines an essentially flat unbroken soffit except for a series of stiffening ribs running transverse to the edges. The stiffening ribs provide sufficient rigidity to the flange member to prevent it from buckling along its length. The long-span decking panel also has a first web member which is integrally jointed and extending obliquely form the first edge. There is also a second web member integrally joined and extending obliquely from the second edge. The web members can be of any desirable length depending on the decking situation.

Abstract: The present invention is a long-span decking panel. The decking panel is comprised of a first panel section having a first open channel. Extending from a first edge of the first open channel is a first side flange. Similarly, extending from a second edge of the first open channel is a second side flange. The first panel section has a first end for bearing against a first support surface and a second end for bearing against a second support surface. The support surfaces can be provided by structural I-beams or steel trusses, for example. The first panel section has a first length. The decking panel also comprises a second panel section having a second open channel. Extending from a first edge of the second open channel is a first side flange. Extending from the second edge of the second open channel is a second side flange.