Abstract: The invention comprises a concrete form. The concrete form comprises a first panel having a first primary surface for contacting plastic concrete and a second primary surface opposite the first surface; and a second panel having a first primary surface and a second primary surface opposite the first surface, the second panel being attached to the first panel so that the first primary surface of the second panel is adjacent the second primary surface of the first panel. The concrete form also comprises a layer of radiant heat reflective material and a layer of insulating material disposed between and covering the second primary surface of the first panel and first primary surface of the second panel. A method of using the concrete form is also disclosed.

Abstract: Improved foldable buildings include an improved rafter plate with a fifth hole that can be used for lifting and as a safety anchor and also has angled corners to abut rafter plate stops newly installed on rafters. Rafters and columns have improved bracket plates, new cross brace flanges, and adaptations for L-shaped brackets that support new steel stud purlins and girts. Wall and roof panels now have a vapor barrier and improved insulation. Rafters are further improved by addition of lifting sleeves. Flashing is pre-cut to custom sizes to avoid cutting at the job site and now features steel gauge flashing with adhered closed cell foam rubber on the interior surface. For long ridge flashing, flashing pieces have interlocking ends. Improved methods of assembly are described.

Abstract: A unitized composite structure comprises a composite member having at least one integrally formed composite stiffener. At least one end of the stiffener includes a runout forming a substantially smooth transition between the stiffener and the composite structure. The stiffener and runout may comprise a crown, side walls, and base cap. The transition in the runout may include a width of the crown increasing, a height of the side walls decreasing, and the base cap splaying outwardly.

Abstract: A fuselage structure, particularly an aircraft door (1) of composite material comprising at least one panel (2) and at least one beam (3) mounted to each other and the panel (2) with the panel (2) being formed of at least one group of composite layers (5, 6, 20). The at least one beam (3) is provided at least at one of its respective ends (10, 11) with a flange (13) suitable for adhesive engagement with the at least one panel (2). The at least one group of composite layers (5, 6, 20) of the panel (2) is in form locking engagement with this flange (13) of the beam (3).

Abstract: A minimum weight thin wall profile member is produced by selecting range values of cross section dimensions ratios for the thin wall profile member and various ratio values within the range values, and determining shape efficiency factor values ?1, ?2 . . . ?n based on the selected ratio values within the range values. Each shape efficiency factor value is determined using the expression ?=Kf·Km, where Kf=(i2/F)2/5 is an overall stability factor, Km=K1/5/(b/?b)2/5 is a local stability factor, b, ?b are the width and the thickness, respectively, of the main strip, i and F are the radius of gyration and the area of the cross-section, respectively, and K is the local stability stress coefficient. A maximum shape efficiency factor value ?max is selected from the determined shape efficiency factor values, and the corresponding ratio values are used to produce the minimum weight thin wall profile member.

Abstract: The object of this invention is a stiffener stop in particular for a primary structural panel of the “skin+stiffener” type for aircraft, said stop consisting of an initial slope connected to the normal height of the stiffener and a final slope, wherein at least one interval having a slope nearly equal to zero with respect to the plane of the base skin in the stop area is inserted between the two aforesaid slopes.

Abstract: A cabinet having a wall comprising an inner wall and an outer wall attached to the inner wall. A strengthening piece or material is positioned between the inner wall and the outer wall to provide strength and rigidity to the wall. Preferably, the strengthening piece or material has a honeycomb structure.

Abstract: A modular surface assembly includes a plurality of panels, each panel having a planar top surface, a double-wall skirt extending around the perimeter of the planar surface and defining a narrow gap between the two walls of the skirt. Collinear first holes extend through the skirt at a first location along the skirt and collinear second holes extend through the skirt at a second location along the skirt spaced from the first location. A first connector extends through the first holes and into the gap of one panel for connecting the one panel to an adjacent similar panel at the first location, and a second connector extends through the second holes and into the gap of the one panel for connecting that panel to the adjacent panel at the second location. Various connector designs are also disclosed.

Abstract: Disclosed is a panel building component, method of making same, and method of fabricating a load-bearing, insulating building wall using the panels and concrete pour after the panels are positioned on site. The panel includes at least one foam core, vertical C-studs, a channel shaped foot member in engaging relationship with the bottom edge of the foam core and the bottom end of the C-studs, two siding members, spacers to keep the foam core centered between the siding members prior to filling the panel with concrete, and the concrete itself. The foam core and C-studs are fabricated shorter than the finished height of the panel so that rebar steel reinforcing rods can be laid horizontally such that when the panel is filled with concrete, the top portion will be a concrete and rebar tie beam. The method of making same is simply assembly of the foregoing components, less the concrete.

Abstract: The invention relates to a structural element for ships' decks, ships' bulkheads, ships' loading ramps, shore-mounted loading ramps, ships' elevators, ships' doors, loading hatches or the like. The element comprises a frame structure and at least one support plane. The invention is particularly characterized by said support plane being constituted by a plurality of plate-like sandwich elements which are connected with said frame structure in such a way that they integrally contribute to the overall strength of the structural element. Said sandwich elements serve as flanges for beams with conventional webs which are included in the structural element. In a preferred embodiment of the invention, the sandwich element comprises a core consisting of a pyramidal framework structure, said core being positioned between two covering plates.