Abstract: A system for modular construction comprising a plurality of structural members. Each of the plurality of structural members comprises a first lengthwise side and a second lengthwise side opposite the first lengthwise side. Each of the lengthwise sides are generally parallel to each other. Each of the plurality of structural members also comprises a first widthwise side and a second widthwise side opposite the first widthwise side. Each of the widthwise sides are generally parallel to each other. Each of the plurality of structural members also comprises at least two slots along one of said lengthwise sides. Each of the slots comprise a pair of generally parallel slot sides, an open end along one of the lengthwise sides, a slot axis parallel to and disposed equally between the slot sides.

Abstract: A system for construction including a first subassembly, a second subassembly, and a connecting member. The first subassembly comprises a plurality of first structural members, each of which includes a plurality of first member sides. At least one of the first member sides includes a first member slot having a first member slot axis. Further, at least one of the first structural members of the first subassembly has at least two first member slots. Each of the first structural members of the first subassembly is detachably connected slot-to-slot to at least one other first structural member to produce the first subassembly. The second subassembly comprises a plurality of second structural members, each of which includes a plurality of second member sides. At least one of the second member sides includes a second member slot having a second member slot axis. Further, at least one of the second structural members of the second subassembly has at least two second member slots.