| 摘要 |
PROBLEM TO BE SOLVED: To provide a reinforcement for a manhole, which is high in concrete deposition efficiency. SOLUTION: A bar arrangement structure for a manhole has a plurality of vertical reinforcements 10 which are arranged at predetermined intervals, and horizontal reinforcements 20 arranged in a manner intersecting the vertical reinforcements 10. Herein a surface of each of the vertical reinforcements 10 and the horizontal reinforcements 20 has grooves 11 forming a bumpy shape. COPYRIGHT: (C)2009,JPO&INPIT
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