The present technology relates generally to a platform and concrete composite slab system used as a building material. A platform, is formed from joined, substantially coplanar boards with connector plates partially embedded between the boards such that a portion of the connector plates extend above the platform's top surface. A reinforcing material (e.g., wire mesh and/or rebar) can be arranged on the prongs or other portion of the connector plates spaced above the platform and concrete is poured over the reinforcing material and allowed to cure, forming a reinforced concrete layer that encases the connector plates and reinforcing material. The connector plates act as standoffs and help to suspend the reinforcing material in the middle of the concrete layer to increase the strength of the reinforced concrete and to fixedly anchor and bind the concrete layer to the platform, so as to establish a composite action between the platform and the concrete.

A connector for connecting a wood substrate to a concrete layer. The connector comprising a shank adapted to engagement with a bore in the wood substrate with a length of the shank aligned with a central axis of the bore, the shank having at least an external portion made of a cement-based composition. In the built-up system, the connectors can have transversal ductile collapse characteristics providing a structural ductility of at least 50% to the built-up system with the wood substrate and concrete layer maintaining an elastic behavior upon the transversal ductile collapse of the plurality of connectors.

A wood-concrete composite slab having a planar wood element, by means of which spans with little dependence upon the relative inherent weight of the slab are achieved. The slab layer construction includes a wood layer, an insulating layer, and a concrete layer. In one embodiment, the layer construction is interrupted by at least one bearing means, in that this bearing means traverses at least the concrete layer and the insulating layer and extends downward at least as far as the wood layer. In a different embodiment, for a high level of soundproofing, the slab comprises in its insulating layer two different-density insulating materials, wherein the denser insulating material rests directly on the wood layer, acting as a vibration damping means. In a further embodiment, the wooden panels of the wood-concrete composite slab that form the planar wood element are tensioned against one another in order to convey tensile forces therethrough.

A method is for horizontal leveling coupling between a concrete foundation and wooden vertical beams. The method includes (a) perforating n anchor holes in a predetermined position of the concrete foundation (where n is a natural number that is greater than or equal to 2); (b) installing a post-installed anchor in each of the n anchor holes; (c) coupling each of nuts to each thread-shaped anchor head located on an upper portion of the post-installed anchor, wherein the nuts are coupled so that upper surfaces of the nuts coincide with a reference surface X1; (d) preparing wooden vertical beams having lower surfaces in which insertion holes into which the nuts are inserted, are formed; (e) installing the wooden vertical beams by moving the wooden vertical beams in a horizontal direction so that the nuts are inserted into the insertion holes formed in the lower surfaces of the wooden vertical beams, wherein a movement direction of each of the wooden vertical beams is one of two or more movement directions; and (f) filling a space between lower surfaces of the concrete foundation and the nuts with a predetermined member.

A timber-concrete composite floor or roof system connector that provides high slip modulus stiffness and resiliency through a combination of mechanical and adhesive connections to a timber substrate, ductile structural behavior under ultimate loading, and an integrated method for chair support of concrete slab reinforcing members during wet concrete placement.