The following steps should be followed for making manhole
1.First we have to Prepare frame in which the casting is done.
2.Collect the Stirrup which size is varry from 4 to 5.5 mm in diameter .
3.these stirrup should be bent in a circular so that the maximus force should be bear by the bars.
4. The Outer frame is made in which the bar should be inbuilt
5.After that the M20 concrete should be used and revolving machine is run during the concreting.
6. Finally the cement sand ratio is used
7. then curing is done for 7 days
The Reason behind the circular Manhole
A round man hole can not be cover the all area to transfer the load but in rectangular manhole the upper part should take a maximum vertical force.
- 1.Circular manhole don't required to rotate difficulty it can be rotate easily
- 2.A round manhole can easily be transported from one site to other.
- 3.The earth is round in shape in it can bear a maximum load so in that way the man hole should be circular in shape
- 4.The manhole can be easy to diagnose .
- 5.Round castings are much easier to manufacture using a lathe.
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