| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an intermediate slab for a pump-installed manhole, which can be easily installed, which has a structure suitable for the manhole for installing a pump, and on which a worker can perform safe and stable work. <P>SOLUTION: This intermediate slab 11 for the pump-installed manhole, in which a guide rail 9 for lifting/lowering the pump is arranged for the maintenance of the two pumps 4 and 4 in the manhole, is constituted by being assembled from a fixing grating 12, two fixing side plate gratings 13 and 13 on both the sides of the fixing grating 12, and an openable grating 14. Each of arc portions at the peripheral edges of these members is supported on the inner wall surface of the manhole; an opening 22 for installing the guide rail for the pump is formed across a partition portion 21 on the other side of the arc portion of the fixing grating; and a reinforcing member 23 is arranged on the undersurface of the grating toward the partition portion from the arc center portion surface of the fixing grating. <P>COPYRIGHT: (C)2011,JPO&INPIT |
