Determination of length of manhole

Ask: according to the standard manhole cylinder segment length is 155mm, in accordance with the drawings to calculate the maximum length of the extended manhole manhole cylinder is 110mm, what is the extended length according to the drawings or in accordance with the standard size of manhole manufacturing
2017-04-24 Reply
There are drawings according to the drawings, as long as the strength of the calculation can be
2017-04-24 14:37:09 Reply
To consider the manufacture and installation, generally take 150mm on the same
2017-04-24 15:21:45 Reply