Patent ID: 8371089

Claim:
A modular building system comprising: (a) at least two planar members comprising: a top panel with a top planar surface; a parallel bottom panel with a bottom planar surface; and multiple walls disposed lengthwise between the panels; wherein the panels and walls define interior hollow cells with inner surfaces and a selected inner cell height and inner cell width; and (b) at least one moment connection with two elongated leg members: having a height or width to allow for a pressure fit within one of the cells along the inner cell height or width of the planar member when inserted therein; and disposed an angular distance from one another and each having a configuration for adjusting leg width, the configuration comprising: a wedge-shaped portion of the leg with two elongated surfaces that meet at an acute angle and a third surface opposite the acute angle; an integral screw which is fixed at one end in a non-threaded manner in the third surface of the wedge and is disposed at its other end within a threaded or partially threaded cylindrical cavity disposed lengthwise through a portion of the leg; whereby upon actuation of the screw the wedge is capable of being moved lengthwise along the leg to increase or decrease leg width.