A panel attachment structure including a panel assembly having a channel member including a channel therein. The panel assembly further includes at least one reinforcing member directly or indirectly coupled to the channel member, and an insert assembly including an insert portion. The insert portion is configured to be closely slidably received in the channel member in an insertion direction, and the insert assembly is configured to be coupled to an underlying support structure.

To provide a means for efficiently reinforcing strength around a through hole of a CLT panel. A CLT panel reinforcing structure includes a CLT panel having a through hole; hole; a first reinforcing member having a first plate and a first pipe, the first plate having a first opening; and a second reinforcing member having a second plate and a second pipe, the second plate having a second opening. In the first reinforcing member, the first pipe is inserted into the through hole in a state where an outer peripheral surface of the first pipe abuts on an inner peripheral surface of the through hole, and a largest surface of the first plate abuts on a first surface of the CLT panel. In the second reinforcing member, the second pipe is inserted into the through hole in a state where an outer peripheral surface of the second pipe abuts on an inner peripheral surface of the first pipe, and a largest surface of the second plate abuts on a second surface located opposite to the first surface of the CLT panel.

To provide a means for efficiently reinforcing strength around a through hole of a CLT panel. A CLT panel reinforcing structure includes a CLT panel having a through hole; hole; a first reinforcing member having a first plate and a first pipe, the first plate having a first opening; and a second reinforcing member having a second plate and a second pipe, the second plate having a second opening. In the first reinforcing member, the first pipe is inserted into the through hole in a state where an outer peripheral surface of the first pipe abuts on an inner peripheral surface of the through hole, and a largest surface of the first plate abuts on a first surface of the CLT panel. In the second reinforcing member, the second pipe is inserted into the through hole in a state where an outer peripheral surface of the second pipe abuts on an inner peripheral surface of the first pipe, and a largest surface of the second plate abuts on a second surface located opposite to the first surface of the CLT panel.

A modular safety shelter provides protection from fragment, overpressure, radiation, and toxic hazards through a combination of physical design of modular segments, of joint seals between modular segments, of door assemblies, and of HVAC control systems. The modular shelter is formed of two or more prefabricated concrete modular segments each including a built-in foundation, roof, and side walls, and a prefabricated concrete vestibule segment providing an airlock-like access to the shelter. The prefabricated modular segments and vestibule segment are transported to a site and assembled to each other on-site to provide a fully enclosed space within the modular shelter. A multi-layer joint seal is formed between adjacent modular segments to prevent ingress of toxic, flammable, or thermal hazards. An integrated HVAC controller monitors toxic or flammable hazards outside and inside of the shelter, and controls HVAC systems to minimize spread of contaminants upon detecting a hazard.

A modular safety shelter provides protection from fragment, overpressure, radiation, and toxic hazards through a combination of physical design of modular segments, of joint seals between modular segments, of door assemblies, and of HVAC control systems. The modular shelter is formed of two or more prefabricated concrete modular segments each including a built-in foundation, roof, and side walls, and a prefabricated concrete vestibule segment providing an airlock-like access to the shelter. The prefabricated modular segments and vestibule segment are transported to a site and assembled to each other on-site to provide a fully enclosed space within the modular shelter. A multi-layer joint seal is formed between adjacent modular segments to prevent ingress of toxic, flammable, or thermal hazards. An integrated HVAC controller monitors toxic or flammable hazards outside and inside of the shelter, and controls HVAC systems to minimize spread of contaminants upon detecting a hazard.

In a method for cathodically protecting and/or passivating a metal section in an ionically conductive material such as steel reinforcement in concrete or mortar, an impressed current or sacrificial anode is mounted on the metal reinforcing bar by attaching a nut member having a female thread to the metal reinforcing bar by elongate flexible wires attached to the nut member so that the nut member and wires encircle the metal reinforcing bar and rotating a threaded rod member carrying the anode body into the female thread so that a forward end of the rod member engages with a front face of the metal reinforcing bar and pulls on the nut member away from the metal reinforcing bar to tension the wrapping wires.

The present disclosure is directed to an apparatus embeddable in a surface. Such surfaces may be formed from any material known in the art of construction, such as, but not limited to, concrete, asphalt, composite rubber, or mud. The apparatus may include a graphical element for display. The apparatus may include frames supporting the graphical element. The frames may include trusses disposed between and upper and a lower surface of the frames. The frame may further include one or more tabs at the upper surface to provide clearance between the upper surface and the graphic element.

A panel attachment structure including a panel assembly having a channel member including a channel therein. The panel assembly further includes at least one reinforcing member directly or indirectly coupled to the channel member, and an insert assembly including an insert portion. The insert portion is configured to be closely slidably received in the channel member in an insertion direction, and the insert assembly is configured to be coupled to an underlying support structure.

A panel attachment structure including a panel assembly having a channel member including a channel therein. The panel assembly further includes at least one reinforcing member directly or indirectly coupled to the channel member, and an insert assembly including an insert portion. The insert portion is configured to be closely slidably received in the channel member in an insertion direction, and the insert assembly is configured to be coupled to an underlying support structure.

A threaded reinforcing bar coupling structure comprises a pair of reinforcing bars and a tubular coupler connecting the pair of reinforcing bars. Each of the reinforcing bars is a deformed reinforcing bar having spiral node portions on an outer periphery of a reinforcing bar main body having a round shaft shape. A cylindrical portion with node portions removed is formed on an end portion of the reinforcing bar, and a male threaded portion is formed on the cylindrical portion. The male threaded portion has hardness or tensile strength greater than that of a remaining portion of the reinforcing bar. The pair of reinforcing bars is connected by the screw tubular coupler that is screwed onto the male threaded portions.