Building frame structure

摘要

A method of installing an elongate cross-beam in a beam-to-beam cross-connection between a pair of nominally in-place, previously installed building-frame beams which, before such installing, are spaced apart by a substantially correct lateral distance in the building frame, and where the cross-beam to be installed includes a generally planar, upright central web, said method comprising
establishing for each of such two spaced beams which are to be cross-connected (a) a pair of brackets having substantially parallel-planar legs, or elements, which are spaced apart in a manner creating an upright, generally planar, straight-down, vertically accessible, open-topped region, or recess, having a lateral width which is suitable for receiving freely the thickness of such a cross-beam's central web, and (b) a catch spanning the space between such elements at a location which is below the open top of the region,
preparing each of the opposite ends of such a cross-beam's central web to be vertically clear so as to permit downward insertion of that end through the open top of, and into, the region, and to possess a downwardly facing hook designed to become caught by, and to seat downwardly by gravity on and against, the mentioned catch,
vertically lowering a cross-beam having such prepared-web-ends to cause these ends to be inserted into, and to be received within, the mentioned open-topped regions between the spaced parallel-planar elements that are associated with the two, spaced, building-frame beams which are to be cross-connected, thus to cause the hooks in the prepared web ends to become caught, hooked and seated by gravity on and against the catches associated with such regions, and performing said lowering without requiring any appreciable increasing of the pre-lowering lateral spacing between the two, spaced building-frame beams, and
by said lowering (a) causing the lowered cross-beam to become hooked and interconnected by gravity to and between the spaced building-frame beams, and (b) creating thereby a gravity-stabilized, correctly spatially organized beam-to-beam cross-connection between the lowered cross-beam and the two, spaced building-frame beams. Also, a method of similarly installing an elongate beam to form an interconnection between a pair of nominally in-place, previously installed building-frame columns which, before such beam installing, are spaced apart by a substantially correct lateral distance in the building frame, and where the beam includes a generally planar, upright central web.