| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem that a conventional beam positioning device is big, heavy, inconvenient to carry, hard to mount and expensive, and requires too much time for positioning work to shorten a construction period. SOLUTION: A positioning device 1 which has up-and-down moving means (a support 3 and a jack 4) installed on a concrete floor F and set free from a hoisting machine for moving at least one end of a PC beam 10 having both ends 10e, 10e temporarily placed on heads 11t, 11t of columns 11, 11, upward from the head of the column and then back to the head of the column is used to operate force such as human power on at least one end of the PC beam moved upward from the head of the column by the up-and-down moving means after temporarily placed. With this force, the support 3 for the up-and-down moving means contacting the concrete floor, which is supported on one side at the lower end, is floated on the other side so that the PC beam is moved and positioned.
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