A metal reinforcement fitting for reinforcing a through hole penetrating through a wooden building component from one surface and the other surface thereof includes: a first plate member made of a metal plate, a cylindrical member made of a metal cylinder, and a second plate member made of a metal plate. The first plate member has a through hole adapted to receive a rod-like fastener therethrough, and is adapted to be disposed on the one surface of the wooden building component. The cylindrical member is adapted to receive the rod-like fastener therethrough and to be inserted and fitted in the through hole of the wooden building component so as to extend over an entire length thereof. The second plate member has a through hole adapted to receive the rod-like fastener therethrough, and is adapted to be disposed on the other surface of the wooden building component.

An assembled slab-type steel-wood composite joint, includes a steel-wood composite column, square wood beams, connecting assemblies for connecting the steel-wood composite column and the square wood beams, and wood slabs connected to and supported by the steel-wood composite column, the square wood beams and the connecting assemblies. The steel-wood composite column includes a hollow cross-shaped outer square wood column, and square blocks are integrally formed on the outer square wood column; and a steel sleeve is inlaid in the outer square wood column, an inner wood column is inlaid in the steel sleeve, column vertical steel bars penetrate through the inner wood column, horizontal steel bars penetrate through the square blocks and are fixedly connected to the steel sleeve, and threads are arranged at the ends of the horizontal steel bars.

An assembled slab-type steel-wood composite joint, includes a steel-wood composite column, square wood beams, connecting assemblies for connecting the steel-wood composite column and the square wood beams, and wood slabs connected to and supported by the steel-wood composite column, the square wood beams and the connecting assemblies. The steel-wood composite column includes a hollow cross-shaped outer square wood column, and square blocks are integrally formed on the outer square wood column; and a steel sleeve is inlaid in the outer square wood column, an inner wood column is inlaid in the steel sleeve, column vertical steel bars penetrate through the inner wood column, horizontal steel bars penetrate through the square blocks and are fixedly connected to the steel sleeve, and threads are arranged at the ends of the horizontal steel bars.

A method of and system for producing Class-A fire-protected oriented strand board (OSB) sheets. Each Class-A fire-protected OSB sheet has: a core medium layer made of wood pump, binder and/or adhesive materials; a pair of OSB layers bonded to the core medium layer; a clean fire inhibiting chemical (CFIC) coating on the surface of each OSB layer, made from CFIC liquid applied to the surface by dipping the OSB sheet into the CFIC liquid in a dipping tank, allowing shallow surface absorption into the OSB layers and ends of the core medium layer at atmospheric pressure; and a moisture, fire and UV protection coating spray coated over the CFIC coating to provide protection against moisture, fire and UV radiation from Sunlight, which is quickly dried by passing through a drying tunnel on the production line.

Modular building units comprise, prior to installation at a construction site, a floor, a ceiling, and a plurality of walls which together define a habitable interior, wherein at least one wall is a reinforced wall capable of spanning a spanning distance of at least 50 feet without underlying support. In some embodiments, reinforced walls comprise one or more reinforcing structures. In some embodiments, the spanning distance is at least 60 feet; in some, at least 70 feet; and in some, at least 80 feet. In a further aspect, a method of building construction comprises the steps of: a) constructing a modular building unit according to the present disclosure at an assembly site; b) transporting the modular building unit to a construction site; and c) installing the modular building unit at the construction site, optionally across a unsupported span of at least 50 feet.

Modular building methods and systems using lightweight modular panels, and specially configured transition panels for transitioning from wall to floor, or from wall to roof. Identically configured standard panels are used for constructing the walls, floor, and roof, with transitions from one structure to the next (e.g., wall to floor, or wall to roof). Each of the variously configured panel types includes channels (e.g., 2 pair of channels) formed through the length of the foam body, where the channels are configured to receive splines (e.g., flanges of an I-beam) therein. In the standard panel, the channels may include pairs of top and bottom channels, with the channels offset towards the respective panel major faces. In the transition panels, the channels may be similarly configured, but positioned differently to make the appropriate transition. The splines are connected to a frame, which acts as a template and transfers loads to a foundation.

A cylindrical sleeve-type steel-wood composite joint includes fiberglass reinforced panel (FRP) cylindrical wood columns, X-shaped wood beams, a key connecting component, arc connecting pieces and splicing outer ring plates. The key connecting component consists of upper and lower cylindrical steel sleeve plates, a connecting sleeve, a cylindrical solid wood and filling wood blocks. The FRP cylindrical wood columns are connected to the key connecting component and are inserted into the key connecting component through the cylindrical steel sleeve plates and penetrative steel bars. The X-shaped wood beams are connected to the key connecting component through the arc connecting pieces, and the splicing outer ring plates are fixed with bolts to realize combination and connection. By adoption of the design of the connecting sleeve, the joint has a high bearing capacity, vertical force transfer is guaranteed, operation is easy, and assembly is fast.

A multi-panel kit defining one or more recesses for a structural joint. The kit including first and second panels for respectively defining first and second faces of the one or more recesses in use. One or more intermediate panels, each defining an intermediate face of at least one, of the one or more recesses in use, and one or more pairs of slots, each comprising a first slot through the first panel and a second slot through the second panel. The one or more recesses are intermediate the first and second panels, and the intermediate faces of each recess extending between the first and second faces of that recess. Each pair of slots is for receiving one of the one or more intermediate panels in use, and each of the one or more intermediate panels includes a first notch and a second notch for receiving an edge of the first slot and an edge of the second slot of a pair of slots respectively in use.

A metal restraint strap for suppressing a displacement between two parallel disposed structural bodies away from each other includes an elongated metal base member; metal bolt members extending outward in a longitudinal direction of the base member from opposite longitudinal ends of the base member, and each having an external thread at least on an outer periphery of an distal end portion of the bolt member; and fasteners adapted to be screwed onto the external threads of the bolt members.

A cylindrical sleeve-type steel-wood composite joint includes fiberglass reinforced panel (FRP) cylindrical wood columns, X-shaped wood beams, a key connecting component, arc connecting pieces and splicing outer ring plates. The key connecting component consists of upper and lower cylindrical steel sleeve plates, a connecting sleeve, a cylindrical solid wood and filling wood blocks. The FRP cylindrical wood columns are connected to the key connecting component and are inserted into the key connecting component through the cylindrical steel sleeve plates and penetrative steel bars. The X-shaped wood beams are connected to the key connecting component through the arc connecting pieces, and the splicing outer ring plates are fixed with bolts to realize combination and connection. By adoption of the design of the connecting sleeve, the joint has a high bearing capacity, vertical force transfer is guaranteed, operation is easy, and assembly is fast.