Abstract: A joist assembly includes a first joist portion comprising at least one joist opening. The joist assembly includes a second joist portion disposed opposite the first joist portion. The joist assembly includes a connector comprising an extension member and a plurality of connector openings. The extension member extends between the first joist portion and the second joist portion. A first connector opening of the plurality of connector openings configured to align with a first joist opening of the at least one joist opening with the joist assembly at a first length. A second connector opening of the plurality of connector openings configured to align with at least one of the first joist opening or a second joist opening of the at least one joist opening with the joist assembly at a second length.

Abstract: A method and system for constructing a monolithic structure with a moldable mixture including one or more rigid forms connected to form an inner rigid wall, an inner inflatable air form, wherein the inner inflatable air form extends from the inner rigid wall, one or more rigid forms connected together to form an outer rigid wall, and an outer inflatable air form, wherein the outer inflatable wall extends from the outer rigid wall.