A construction module for use in a modular construction system, which improves the aesthetic finish and facilitates the operation and assembly of the elements comprising it, said constructive module being formed by at least two units of material and by at least one cylindrical bar that go through the at least two units of material transversely through perforations, wherein said at least one bar comprises on its surface at least two threaded sections separated by a smooth section, each threaded section being located inside each unit of material. The disclosure also consists in a modular construction system configured by at least two construction modules and in a method of assembling a modular construction system.

A flat plate based system for securing legs to a chair is provided wherein a chair support has two catches and two leg pieces each have a tab at one end, the tab configured to interact with one of the two catches, each leg piece including an opening through which a tension member passes. Anchor pieces are configured to secure to the tension member such that the tension member pulls the anchor pieces together. The leg pieces each have an edge such that the edges face each other and the tabs interact with the catches and the tension member is positioned in the opening and the anchor pieces and tension member pull the edges together to hold the tabs against the two catches.

A flat plate based system for securing legs to a chair is provided wherein a chair support has two catches and two leg pieces each have a tab at one end, the tab configured to interact with one of the two catches, each leg piece including an opening through which a tension member passes. Anchor pieces are configured to secure to the tension member such that the tension member pulls the anchor pieces together. The leg pieces each have an edge such that the edges face each other and the tabs interact with the catches and the tension member is positioned in the opening and the anchor pieces and tension member pull the edges together to hold the tabs against the two catches.

A furniture frame structural system with interlocking members includes a first face frame, a second face frame, and a plurality of frame members. At least one joining feature for each frame member allows the frame members to arrange into a skeletal configuration as the joining feature includes a male interlocking portion and a female interlocking portion. More specifically, the male interlocking portion for each frame member is engaged with the female interlocking portion of an adjacent member from the frame members. Resultantly, the frame members complete the skeletal configuration. The first face frame and the second face frame are then oppositely mounted to the skeletal configuration completing the basic frame structure. Additional components such as post-tensioned fasteners, inner liners, outer panels held in side rails, a top, legs, and baseboard can be optionally integrated with the basic frame structure to improve the functionality and appearance of the resulting furniture.

A furniture frame structural system with interlocking members includes a first face frame, a second face frame, and a plurality of frame members. At least one joining feature for each frame member allows the frame members to arrange into a skeletal configuration as the joining feature includes a male interlocking portion and a female interlocking portion. More specifically, the male interlocking portion for each frame member is engaged with the female interlocking portion of an adjacent member from the frame members. Resultantly, the frame members complete the skeletal configuration. The first face frame and the second face frame are then oppositely mounted to the skeletal configuration completing the basic frame structure. Additional components such as post-tensioned fasteners, inner liners, outer panels held in side rails, a top, legs, and baseboard can be optionally integrated with the basic frame structure to improve the functionality and appearance of the resulting furniture.