Abstract: A sheet material attachment system including at least one longitudinal beam having a web, and at least one flange having first and second opposite sides, the web extending from the flange second side. A sheet material attachment element overlies the flange first side, the sheet material attachment element having a hardness which is less than the hardness of the flange. The sheet material attachment element is attached to the beam by a fastener, the fastener being substantially U-shaped and having a first leg which engages a side of the sheet material attachment element and a second leg which engages the flange second side. A piece of sheet material is anchored to the sheet material attachment element.

Abstract: A floor joist system including at least one girder having an upper surface, a plurality of joists interconnected with the girder, each joist having an upper surface, the upper surfaces of the girder and the joist being substantially coplanar, a plurality of individual flooring attachment elements attached to the upper surfaces of the girder and joists, the flooring attachment elements having a hardness which is less than the hardness of both the girder and joists, and flooring supported by the upper surfaces of the girder and joists through their respective flooring attachment elements, the flooring attached to the flooring attachment elements.

Abstract: A floor joist system for building construction comprising interconnected steel girders and joists. The girders may be castellated I beams having a plurality of large openings and regularly spaced vertical slots through its web, which extend between opposite side walls of a building or its foundation, supported thereby. Joists may be I beams of shorter height than the girders which have tongues formed from their webs which extend from their ends. The tongues of two joists are fitted into a single vertical girder slot from opposite sides of the girder, their tongues overlapping therein. The opposite ends of the joists are similarly fitted into an adjacent girder or rest upon a side wall of the building or its foundation. The girder slot is positioned and the side walls are adapted such that the uppermost surfaces of the joists and the girder(s) are coplanar.

Abstract: The PLANK SUPPORT JACKET comprises an upper horizontal ledge and a lower horizontal ledge joined to a vertical wall member, each ledge extending from the vertical wall member in a direction opposite each other and means for connecting the vertical wall member to a longitudinal side surface of a plank of wood to be supported thereby such as to dispose the lower horizontal ledge adjacent the underside surface of the plank and the upper horizontal ledge in substantially axial alignment to the upper surface of the plank.

Abstract: The PLANK SUPPORT JACKET comprises an upper horizontal ledge and a lower horizontal ledge joined to a vertical wall member, each ledge extending from the vertical wall member in a direction opposite each other and means for connecting the vertical wall member to a longitudinal side surface of a plank of wood to be supported thereby such as to dispose the lower horizontal ledge adjacent the underside surface of the plank and the upper horizontal ledge in substantially axial alignment to the upper surface of the plank.