| 摘要 |
<p>A method capable of realizing accurate positioning of an anchor bolt in a foundation, the method not using a leading frame but using a member of a remarkably simple structure and a simple procedure. On a concrete subslab (2) is fixed a base (1a) of an installation member (1) so as to correspond to a center marking, indicated on the subslab, for an anchor bolt. An anchor bolt (6) is stood on a hollow bolt (1b) of the base (1a) by using a hinge portion (4) and a turnbuckle portion (5). After that, concrete for a base portion of and a rising portion of a foundation is placed at the same time. Then, before the concrete hardens, the anchor bolt (6) whose hinge portion (4) is bent and inclined by a placement pressure of the concrete is adjusted to vertical while being measured with a plummet instrument. The vertical state is retained by a verticality retainer until the concrete hardens, so that the anchor bolt (6) is precisely positioned and placed.</p> |
