A composite construction element or panel system for use in construction of multi-storey structures, either as a prefabricated panelized system or as a modular system. The composite construction element comprises two mass timber subpanels joined at a distance to form a hollow core, through which various building services (e.g. HVAC or electrical systems) and/or insulation may be integrated. When used as a modular system, after assembly, the two subpanels become one structural entity of increased structural capacity while providing a hollow core to provide/deliver desired building services.

To provide a CLT structure in which an anchor member does not interfere with a reinforcement member. A CLT structure includes a strip footing having a reinforcing bar extending in a longitudinal direction, a wall panel which is a panel material obtained by laminating and bonding sawn boards and in which a slit extending along the longitudinal direction is formed in a lower end surface, joint plates each partly embedded in the strip footing and having a joint board section of a flat plate shape at least partly projecting upward from an upper surface of the strip footing, and drift pins connecting the joint board sections and the wall panel in an inserted state where the joint board sections projecting from the upper surface of the strip footing are inserted into the slit of the wall panel. The joint plate has the joint board section, a flange section embedded in the strip footing and extending in a direction crossing the perpendicular direction from the joint board section, and an anchor bolt embedded in the strip footing and extending downward from the flange section.

A shear wall assembly is provided. The assembly includes a first anchor, a second anchor, a third anchor, a first bolt, a second bolt, a seismic fuse, and a rod. Each anchor includes a hollow tubular body including a first open end, a second open end, an interior including female threads, and an exterior including male threads. Each bolt includes a head and a shank. The shank includes male threads. The shank extends through an open end of an anchor. The male threads of the bolt engage with the female threads of the anchor. The seismic fuse is configured to receive the heads of the bolts and includes a hole. The rod includes an end with male threads. The rod extends through the hole of the seismic fuse into the open end of an anchor. The male threads of the rod engage with the female threads an anchor.

A shear wall assembly is provided. The assembly includes a first anchor, a second anchor, a third anchor, a first bolt, a second bolt, a seismic fuse, and a rod. Each anchor includes a hollow tubular body including a first open end, a second open end, an interior including female threads, and an exterior including male threads. Each bolt includes a head and a shank. The shank includes male threads. The shank extends through an open end of an anchor. The male threads of the bolt engage with the female threads of the anchor. The seismic fuse is configured to receive the heads of the bolts and includes a hole. The rod includes an end with male threads. The rod extends through the hole of the seismic fuse into the open end of an anchor. The male threads of the rod engage with the female threads an anchor.

A ventilation structure in an exterior wall body incorporates: a pair of wooden column members erected spaced away from each other; a wooden beam member installed across on the pair of wooden column members and having a first ventilation groove at an exterior face; a wooden base member installed across lower ends of the pair of wooden column members and having a second ventilation groove at an exterior face; and a base plywood fixed to an exterior face of each of the pair of wooden column members, the wooden beam member, and the wooden base member, and serving as a base of a decorative exterior wall member, wherein a plurality of the first ventilation grooves and a plurality of the second ventilation grooves are formed away from each other in a horizontal direction.

A set of structurally insulated panels and method of building construction, the set of panels having an indexing system that allows for any one panel to be easily attached to any other panel via indexing pins placed in pre-arranged openings. The indexing system enables essentially any number of panels to be assembled in essentially any reasonable manner to construct a building structure.

In several embodiments, the disclosed process may include installing one or more householder devices onto load-bearing structures of a building, installing one or more perimeter beams onto the one or more householders, installing a new exterior assembly onto the one or more perimeter beams, removing an existing roof, and constructing an additional level on the building. In at least one embodiment, installing the one or more householders onto the load-bearing structure may include cutting a hole in the existing roof above the load-bearing structure, attaching the householder onto the load-bearing structure, and sealing the hole around the householder. In some embodiments, the new exterior assembly may be partially or fully constructed on site and may be installed onto the one or more perimeter beams. In some embodiments, once the new exterior assembly is installed, the old roof may be removed from underneath the new exterior assembly.

In several embodiments, the disclosed process may include installing one or more householder devices onto load-bearing structures of a building, installing one or more perimeter beams onto the one or more householders, installing a new exterior assembly onto the one or more perimeter beams, removing an existing roof, and constructing an additional level on the building. In at least one embodiment, installing the one or more householders onto the load-bearing structure may include cutting a hole in the existing roof above the load-bearing structure, attaching the householder onto the load-bearing structure, and sealing the hole around the householder. In some embodiments, the new exterior assembly may be partially or fully constructed on site and may be installed onto the one or more perimeter beams. In some embodiments, once the new exterior assembly is installed, the old roof may be removed from underneath the new exterior assembly.

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.

A method of constructing a building comprising the steps of attaching a first panel to a second panel. The first panel is one of a single plenum panel and a multi-plenum panel and the second panel is one of a single plenum panel and a multi-plenum panel.