Top support, top support system and tank construction method

摘要

To provide a top support, a top support system and a tank construction method which are suitable for constructing a tank of different scale, and for constructing a tank having an installation restriction at a top part of a wall.SOLUTION: A top support 100 provided on a top part 2A of a side wall 2 and supporting an object is provided with a pair of column structures 104a and 104b standing on the top part 2A of the side wall 2 and a connection structure 104c connecting the pair of column structures 104a and 104b, and an expansion unit 180 for expanding an interval between the pair of column structures 104a and 104b can be connected to the connection structure 104c.SELECTED DRAWING: Figure 7