BASE FRAME AND INSTALLATION METHOD THEREOF

摘要

PROBLEM TO BE SOLVED: To provide a preassembled base frame adjustable in width and capable of improving the workability in transportation and construction work.SOLUTION: A base frame 1 includes: a pair of stringers 2 and 3 which are disposed opposed to each other being interposed by a predetermined distance; and plural cross members 4 which are bridged between the pair of stringers 2 and 3 which are disposed being interposed by a predetermined distance in an extending direction of the stringers 2 and 3. The plural cross member 4 are attached to the pair of stringers 2 and 3 so that the distance between at least one of both ends of the cross member 4 and the side face of the stringers 2 and 3 facing both ends of the cross member 4 is adjustable.SELECTED DRAWING: Figure 1