A corner hardware kit for completing a frame corner that is defined by a first frame element and a second frame element includes a corner bracket having a first portion for attachment to the first frame element and a second portion for attachment to the second frame element. The corner bracket has an upstanding foot that protrudes rearwardly therefrom and carries a coupling member at a distal end thereof. The kit also includes an elastic corner insert that has a curved outer surface and has a pair of first coupling elements for mating to a pair of second coupling elements that are associated with the first and second frame elements to complete the corner of the frame.

A modular wall overlay system for installation on a support surface includes a frame; and a cover securely retained on the frame by a tensioning system whereby the cover is free of direct attachment to the frame but rather is retained under tension on the frame by the tensioning system. The frame includes a plurality of frame pieces and a plurality of corner brackets. The frame pieces are directly coupled to respective corner brackets but are free of direct coupling to one another.

A modular wall overlay system for installation on a support surface includes a frame; a cover that is securely, yet detachably, retained on and along a front face of the frame by a tensioning mechanism that is configured to tension the cover; and elastic corner inserts that are disposed in corners of the frame and include curved outer surfaces that are configured to permit the cover to be stretched over the elastic corner inserts creating radiused corners and preventing tearing of the cover in corners thereof when the cover is tensioned by the tensioning mechanism.

A modular wall overlay system for installation on a support surface includes an outer frame having a pair of opposing ends and a pair of opposing sides and a customizable inner frame that is coupled to the outer frame. The inner frame includes a plurality of transverse supports that extend between the opposing sides and a plurality of longitudinal supports that extend between the opposing ends. The longitudinal supports and the transverse supports lie in a common plane defined within the outer frame. The system further includes a cover that is securely retained on the outer frame.

A corner hardware kit for completing a frame corner that is defined by a first frame element and a second frame element includes a corner bracket having a first portion for attachment to the first frame element and a second portion for attachment to the second frame element. The corner bracket has an upstanding foot that protrudes rearwardly therefrom and carries a coupling member at a distal end thereof. The kit also includes an elastic corner insert that has a curved outer surface and has a pair of first coupling elements for mating to a pair of second coupling elements that are associated with the first and second frame elements to complete the corner of the frame.

A magnetic strut channel fitting includes first and second plates connected to each other and a plurality of magnets embedded into at least one of the first and second plates. According to another embodiment of the present invention, a magnetic strut channel fitting includes a substantially flat plate and a plurality of magnets embedded into the plate. According to yet another embodiment of the present invention, a magnetic strut channel fitting includes a substantially flat connecting plate, first and second arm members, each of the first and second arm members having a vertical plate and a horizontal plate, and a plurality of magnets, the plurality of magnets embedded into the connecting plate to allow the magnetic strut channel fitting to be magnetically adhere to a strut channel. The plurality of magnets allow the magnetic strut channel fitting to be magnetically adhered to a strut channel.

A connection node assembly for use in connecting an upper prefabricated building module to a lower module. Hollow vertical edge supports of the building modules have top and bottom connection parts. A connecting bolt can be passed through the top part of an upper vertical support in the upper building module and seated within the bottom part of that vertical support with the shank extending downward. The shank engages a threaded aperture in a connecting nut secured within the top part of a corresponding lower vertical support in the lower building module. Diaphragm plates sandwiched between the upper and lower vertical supports are used to tie horizontally placed modules together.

A bolted joint with a drum-shaped spherical shell for connecting a circular steel tube brace, including a drum-shaped spherical shell and N connecting members, connecting members each include a curved European nut, a bolt for space trusses, a sleeve, a sealing plate (or a conehead) and a circular steel tube. There are at least three forms: a corner drum, a half drum and a full drum. Specifications of the high-strength bolt for space trusses are determined, and the geometric dimensions, tensile and compressive bearing capacity of the joint are selected. The bolted joint has clear force transmission and a small deviation between theoretically analyzed stress and actual stress; has no eccentricity, can be finely adjusted and has reliable mechanical performance; is in bolted connection and is installed efficiently; and is not convex, thereby facilitating wallboard installation and indoor decoration.

A mounting apparatus to secure a pair of solar panel rails to an asphalt shingle roof and minimize penetrations or damage to a rafter of the roof is provided. The mounting apparatus permits the solar panel rails to support adjacent solar panels thereon. The mounting apparatus includes a lower assembly coupled to the asphalt shingle roof and having a screw and flashing disposed on an asphalt shingle and coupled together, and an upper arm assembly coupled to the screw of the lower assembly and having a generally U-shaped member with a pair of upright arms continuously connected to opposing ends of a horizontal arm, each upright arm having a slot to receive a fastener that secures one of the pair of solar panel rails thereto.

A section-steel joint serves to fasten a section steel cross beam and a steel beam together. The section-steel joint includes an upright plate, two opposite support portions, and a connecting portion. The two support portions are separated from each other and integratedly connected to the upright plate so that a positioning groove is defined by the two support portions and the upright plate for positioning the section steel cross beam. The connecting portion is located on one side of the positioning groove for positioning the steel beam. With the specially designed positioning groove and connecting portion, the section-steel joint allows the section steel cross beam and the steel beam to be positioned fast, and then fasteners can be used to fix all the components together, thereby making the assembling work more convenient.