Abstract: A push up expansion floor for providing a work floor is adjustable and mounted on vertical square shafts. The floor can move up and down on the shafts, can be locked in place on the shafts, and has adjustable extension members for increasing floor area above vertical shafts. The floor is moved up and down on the vertical shafts by means of a wire rope and is locked in place by means of bolts. Rising above the moving work floor is an expansion floor. The expansion floor raises up on the vertical shaft 17 while the moving work floor rolls on rollers at the bottom of separate floor supports.

Abstract: Steel frame posts are uprightly secured by an apparatus having a stable, wide access platform with X-Y adjusters for adjusting the position of the steel frame posts while the posts are temporarily supported. The access platform has wheels to travel by itself along a pair of rails. The X-Y adjusters are disposed at an edge of the access platform and are composed of a longitudinal slide and a transverse slide, which are provided on a fixed base and are slid to a suitable position for permanent bolting of the steel frame posts by easy controls in use of respective feeding handles. A coupler connected to the steel frame post by a vice is coupled with a protruding bar provided at a top of the X-Y adjuster for temporarily holding the steel frame post.