| 摘要 |
PURPOSE: A manufacturing method of a manhole is provided to offer the manhole which is jointless, has good quality of outward appearance, and make a manhole cover be the same height as the upper surface of a manhole, thereby a simple construction and an economic cost for construction are guaranteed. CONSTITUTION: A manufacturing method of a manhole(10) comprises the steps of: making a mold(11) of which the side and the upper surface are closed; turning the mold(11) upside down; pouring some concrete into the mold(11) and curing the concrete surface; removing the mold(11); turning the cured concrete upside down; pouring concrete to shape the bottom through the opening of the cured concrete; curing the bottom concrete.
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