An engineered wood structural system including multiple vertical structural elements including first seats comprised between parallel vertical struts made of successive aligned vertical strut segments connected to each other, multiple horizontal structural elements, supported on the first seats, each including an upper horizontal board and a lower horizontal board with at least one second spacer placed in between, and optionally slab members supported on the horizontal structural elements defining at least one structure floor.

A building-construction panel includes a tongue on one edge and a groove on an opposite edge that receives the tongue of an adjacent panel. A shoulder on the tongue-side edge defines an abutted surface that is contacted by an abutting surface on the groove-side edge to limit panel travel during installation and maintain a gap between upper edge portions of the adjacent panels. A bottom transition is formed on the groove-side edge so that the groove-side abutting surface is smaller than the tongue-side shoulder abutted surface. In this way, the relatively smaller groove-side abutting surface structurally maintains the gap but also minimizes frictional interpanel contact area to minimize squeaking. And the relatively larger tongue-side shoulder abutted surface helps keep the shoulder from being collapsed into the groove from overdriving the panels together during installation. In typical embodiments, the panel is a high-performance structural wood subflooring panel.

A building-construction panel includes a tongue on one edge and a groove on an opposite edge that receives the tongue of an adjacent panel. A shoulder on the tongue-side edge defines an abutted surface that is contacted by an abutting surface on the groove-side edge to limit panel travel during installation and maintain a gap between upper edge portions of the adjacent panels. A bottom transition is formed on the groove-side edge so that the groove-side abutting surface is smaller than the tongue-side shoulder abutted surface. In this way, the relatively smaller groove-side abutting surface structurally maintains the gap but also minimizes frictional interpanel contact area to minimize squeaking. And the relatively larger tongue-side shoulder abutted surface helps keep the shoulder from being collapsed into the groove from overdriving the panels together during installation. In typical embodiments, the panel is a high-performance structural wood subflooring panel.

A unitary floor comprises a top layer, floor components, and a bottom layer. The floor components are sandwiched between the top layer and the bottom layer to provide an integral structure that comprises a continuous surface, unitary floor. Each of the floor components has a material strips. Moreover, the material strips that make up a corresponding floor component is a composite assembly that includes a first set of material strips, which may be interleaved with a second set of material strips. The first set of material strips includes a different density compared to the second set of material strips. Moreover, the unitary floor may be fabricated by a vacuum process, such as a vacuum infusion process.

A support structure may have a base having surfaces including a top, a bottom, a front, a rear and sides. A first top slot may be formed in the top and may extend at least partially between the front and the rear. A second top slot may be formed in the top and may extend at least partially between the sides. In addition, a bottom slot may be formed in the bottom. A system for attic storage can include an attic having attic joists. A plurality of support structures, each comprising a base, may be mounted to the attic joists. At least two conventional lumber studs may be included and may extend between adjacent ones of the bases. In addition, a plurality of lumber panels may be mounted to at least one of the bases and the lumber studs.

A support structure may have a base having surfaces including a top, a bottom, a front, a rear and sides. A first top slot may be formed in the top and may extend at least partially between the front and the rear. A second top slot may be formed in the top and may extend at least partially between the sides. In addition, a bottom slot may be formed in the bottom. A system for attic storage can include an attic having attic joists. A plurality of support structures, each comprising a base, may be mounted to the attic joists. At least two conventional lumber studs may be included and may extend between adjacent ones of the bases. In addition, a plurality of lumber panels may be mounted to at least one of the bases and the lumber studs.

A system and method for assembling framing assemblies for use as ceiling or floor structures of modular building units using automation are disclosed. The framing assemblies include trusses that are attached at the lateral edges thereof by a joist including at least one layer of dimensional lumber to form a substantially rigid framework. Cover panels are positioned over and attached to an inner surface of the framing assembly.

A system and method for assembling framing assemblies for use as ceiling or floor structures of modular building units using automation are disclosed. The framing assemblies include trusses that are attached at the lateral edges thereof by a joist including at least one layer of dimensional lumber to form a substantially rigid framework. Cover panels are positioned over and attached to an inner surface of the framing assembly.

A shear transfer system is provided. In the system, a shear tie strap is attached to a first framing member, a second framing member, a third framing member, a fourth framing member, and a fifth framing member of a frame in a framed building. The second, third, fourth, and fifth framing members are orthogonal or oblique to the first framing member. More than one shear tie strap may be present in the framed building.

A method of manufacturing a pre-stressed beam or panel and the resulting beam or panel are described. The method includes providing a timber-based component (1); providing a pre-stressing member (9) arranged along the timber-based component; applying a tensile force to the pre-stressing member (9); providing concrete anchors (11a, 11b) at locations that are spaced apart along the timber-based component (1); coupling the pre-stressing member (9) to the concrete anchors (11a, 11b); and releasing the tensile force on the pre-stressing member (9) to transfer a compressive force to the timber-based component (1) through the concrete anchors (11a, 11b) to form a pre-stressed beam or panel.