Every day, when stepping out of the house on the road, you people come across manholes. Designed purposely for draining water during its overflow, these manholes are an important part of maintaining the safety and hygiene factor of the road. If you are a contractor and have a manhole construction team in your tow, you can build the safest of manholes in the designated area. Before you initiate the construction procedure, you better learn more about the types of manholes that are to be seen these days. It will help you to know more about what will suit in your assigned locality.
The shallow and normal manholes:
There are two basic examples of manholes, which most of the people are catering towards. Those options are shallow manhole and the normal manhole. The shallow one is provided with a depth of around 75 to 90 cm. It is mainly provided right at the beginning of the brand sewer or even at a place, which is not quite associated with heavy traffic. It comes with a light cover right at the top, which is also known as an inspection chamber.
Another example is the normal manhole placed under manhole construction deals. This form of manhole option can be seen in the sewer line with a proper depth of around 150 cm with the heavy cover on top. This form of item is constructed in a square shape or even available in rectangular ones.
Concrete surround manhole:
Another example of the manhole, which is available under manhole construction is the concrete surround one. The reinforced forms of manhole rings are not in need of a concrete surround for the strength purpose or where the depth will not exceed a mark of 4.5 meters. Just below this depth or the area where an opening is cut through, based on the size in relation to the depth of ring or the diameter, you have concrete surround of around 150mm thick. It is mostly required for some engineering specifies.
The backfilling manholes:
The experts associated with the manhole construction procedure might be working hard with the backfilling options. These manhole rings are to be backfilled in a careful manner with the granular material and it should be free from boulders, which can otherwise cause some serious damages. There are some details available to the procedure but only for guiding purposes. The details from the specifiers or the engineers should be calculated as the final words, as details can always vary from one site condition to another.
Composite manholes over here:
Composite manholes are some of the basic examples under manhole construction practice and widely used in applications where exfiltration and infiltration or even corrosion by hydrogen sulfide takes place. It is used in those areas where the structures are in need of factory integrated into manhole before even placing the object on the ground. Some of the structures, which are commonly integrated into these composite manholes, are flues, flow inverts and the drop structures from higher elevated points to the lower elevated discharged pipes.
Going for the deep manholes:
These manholes are associated with a depth, which is greater than 150cm and comes handy with the heavier cover right at the top. The size of these manholes will increase gradually and a facility is available for going down for cleaning purposes when required.
It is always important to check out the types before proceeding further with the manhole construction procedure. This way, you will understand the option to watch out for and take help of manhole construction company, without wasting any time from your side.