PURPOSE:To facilitate level adjustment of a PC foundation and shorten constructing period by providing height-adjustable support legs on a PC foundation setting surface in such a manner that they are disposed in three positions per PC foundation member. CONSTITUTION:Height adjustable support legs 2... are provided on a PC foundation setting surface in such a manner that they are disposed in three positions per PC foundation member 3. The PC foundations 3... are placed on the support legs 2..., and height adjustment of the support legs 2... is conducted to level the foundation.
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