A building includes a floor located between an upper floor and a lower floor. The floor includes first floor extending members and second floor extending members that intersect the first floor extending members. The first floor extending members and the second floor extending members are made of wood. A reinforcement member is arranged in at least one of a section between two of the first floor extending members and a section between two of the second floor extending members.

A building framework is disclosed herein comprising a first structural member, a second structural member, and a third structural member disposed between the first and second structural members, a first web member connecting the first and third structural members in a spaced apart relationship, and a second web member connecting the second and third structural members in a spaced apart relationship. The first web member is positioned relative to the second web member such that the shortest distance between the first web member and second web member is greater than or equal to 5 times the thickness of the third structural member. Additional products, systems, and methods also are disclosed.

A laminated wood product comprising providing a plank presenting a pair of parallel major surfaces, a pair of minor surfaces, a pair of end surfaces and a longitudinal direction parallel with said major and minor surfaces and perpendicular to the end surfaces, said plank having a water content of more than 25% by weight, preferably more than 30% by weight. At least one of the major surfaces is laminated to a surface of a second member.

A cellulose-based structural building panel assembly includes a cross-laminated timber (CLT) core which is reinforced with one or more post-tensioned tendons stressed to a pre-selected tensioning force, following the placement as part of the panel assembly. The tendons are provided within a sleeve which is grouted with a channel formed in an underside of the core and which after post-tensioning of tendons is infilled with a binder securing the tendons in a fully bonded configuration.

A beam connecting system uses a threaded connector rod and a mating connector, for example a nut, for mounting the end of a wood beam against the upright supporting surface of a supporting body. The connector rod protrudes from the upright supporting surface of the supporting body to be received in a fastener bore extending longitudinally into the beam from the end face of the beam. A transverse access bore which intersects the fastener bore receives the mating connector to form a mechanical connection to fasten the end face of the beam against the upright supporting surface. A wood plug encloses the access bore such that the mechanical connection is fully embedded in the beam and supporting body so as to be surrounded by wood material, and thus be protected from elevated temperatures in fire condition.

E.sup.3Lumber is comprised by novel apparatuses as engineered wood systems, methods, apparatuses, tools, adhesives, and manufacturing for construction of structures. E.sup.3Lumber has standardization and optimization surpassing state-of-the-art construction. Each of those systems, methods, apparatuses, material compositions, and material stratifications utilize one-to-many apparatus relations. All formed or machined apparatuses feature innovative features like engineered constraints, multi-tier and hybrid composites, and constrained assembly all situated within novel methods like, the Three E, 4-Tier, Cross Datum Construction, E-Stud, E-Framing, E-Truss, E-Hips, E-Bridging, Continuous Truss methods meet national and international specifications. The Three E's of E.sup.3Lumber are environmental, economic, and engineering and are characteristics found throughout invention intended for the significant improvement of environmental conditions, wood products, and technologies. As a fact, E.sup.3Lumber use decreases deforestation by increasing growth periods of trees by decreasing biomass consumption and all the while providing economic incentive to become greener.

A fire retardant article has a wood-based material with a polyisocyanurate foam article attached thereto, where the polyisocyanurate foam article covers 90% or more of the exposed portion of the wood-based material, has a thickness greater than 1.8 centimeters, a foam core having a density of 28-128 kg/m.sup.3, a trimer concentration characterized by at least one of (i) a trimer level in a range of 12-25 weight-percent and (ii) a molar ratio of trimer to sum of urethane and urea in a range of 1-8, a phosphorous concentration of at least 0.3 wt %, a combined concentration of phosphorous and bromine of at least 0.5 wt %, and a vapor permeable and non-combustible facer on at least one primary surface of the foam core.

A hollow elongate building element (1) made of composite wood is described. It has a polygonal peripheral structure (3) around the void. Each side of the polygonal peripheral structure (3) is formed of at least a pair of elongate strips (5) of triangular or trapezoidal cross section, which are juxtaposed and reversed relative to one another. The polygonal peripheral structure (3) also exhibits strip-form butting-together means (7, 9) in its corner regions. The various strips (5, 7, 9), which are obtained by radial cuts into logs, are bonded together.

A building framework is disclosed herein comprising a first structural member, a second structural member, and a third structural member disposed between the first and second structural members, a first web member connecting the first and third structural members in a spaced apart relationship, and a second web member connecting the second and third structural members in a spaced apart relationship. The first web member is positioned relative to the second web member such that the shortest distance between the first web member and second web member is greater than or equal to 5 times the thickness of the third structural member. Additional products, systems, and methods also are disclosed.

A building framework is disclosed herein comprising a first structural member, a second structural member, and a third structural member disposed between the first and second structural members, a first web member connecting the first and third structural members in a spaced apart relationship, and a second web member connecting the second and third structural members in a spaced apart relationship. The first web member is positioned relative to the second web member such that the shortest distance between the first web member and second web member is greater than or equal to 5 times the thickness of the third structural member. Additional products, systems, and methods also are disclosed.