Manholes and Manhole Covers Information   Manholes allow access to underground piping, meters and facilities.  Manholes perform a variety of functions. They allow access to meters, which read liquid flows to things such as sanitary sewer lines. They allow access to underground cables and telecom facilities and variety of other functions. Manhole access ports are sometimes referred to as manways.  Construction, dimensions specifications, manhole cover specifications, and features...
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Q & A on Manholes and Manhole Covers

We asked our users for their input on Manholes and Manhole Covers. Here are the results of 106 users familiar with Manholes and Manhole Covers.

Who Took Our Poll? | Design Trends | Applications and Use | Features | Buying Advice |

Who Took Our Poll?Top

Design TrendsTop

Q:
What new technologies are influencing manhole and manhole cover design?
16 answers
Answers:
For sewage application at higher ambient temperature, material selection is important. Depending on stiffness of the material, wall thickness design is critical.
~Chandrakant R, Consultant, Pune, Maharashtra, India
FRP/SMC are the new products which I feel are the best in this field. They can make solutions to many disadvantages.
~Amit S, Engineer, Lucknow, INDIA
Cast Iron is mostly used. Composites are entering the market as new material.
~Engineering, Design, Bursa, Turkey
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Q:
From your perspective, which companies are creating the most innovative manholes and manhole covers?
12 answers
Answers:
Some of them from China, Strongwell & Fibertech from UK etc.
~Amit S, Engineer, Lucknow, INDIA
Manholes: Romold and Hofitt in Israel.
~Engineering, Design, Bursa, Turkey
Neenah Fdy, EJIW Fdy, U.S. Foundry
~Steve D., Marketing/Sales, Atlanta, GA
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Applications and UseTop

Q:
What are some of the applications you have used manholes and manhole covers for?
22 answers
Answers:
We used FRP air-tight manholes on waste water treatment for stench-resistance and anti-corrosion.
~Manufacturing, New-taipei, Taiwan
As decorative additions to patios, driveways, center / focal pieces for yards, walkways etc.
~T B, Landscate design, CAPISTRANO BCH, CA
1) Electrical cable trenches 2) Water drainage 3) Telecommunication 4) housing etc.
~Amit S, Engineer, Lucknow, INDIA
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Q:
Please share with us any “non-standard” applications that manholes and manhole covers have been used for.
9 answers
Answers:
Yes, most of the manholes manufactured were tailor made, as topography of the cities were such that each manhole had to be designed and fabricated to meet site requirement.
~Chandrakant R, Consultant, Pune, Maharashtra, India
Infiltration course for the Army recreating a Iraqi village used for hiding people & weapons.
~Steve D., Marketing/Sales, Atlanta, GA
As 'art' for gardens, yards, walkways etc.........
~T B, Landscate design, CAPISTRANO BCH, CA
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Q:
Do you know of any disastrous mistakes that occurred due to the incorrect usage of manholes and manhole covers?
7 answers
Answers:
People being hurt when they are handled improperly, people falling in when covers are stolen and they walk right in, sewer or underground explosion shooting the covers into the sky, hurricanes with the storm surge doing the same launching the covers.
~Steve D., Marketing/Sales, Atlanta, GA
More or less, RCC manholes & covers, less in cost and very low durability. Also cast iron, which makes the maintenance hard for the labor.
~Amit S, Engineer, Lucknow, INDIA
Yes, because of improper installation, manholes have failed.
~Chandrakant R, Consultant, Pune, Maharashtra, India
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FeaturesTop

Q:
What would your design or feature "wish list" be for this product?
15 answers
Answers:
I would like to make this item: less maintenance, easy for the worksmen doing maintenance job, longer life, can look good after the age also etc.
~Amit S, Engineer, Lucknow, INDIA
Design should be such that it takes care of soil pressure, corrosion and it should be most economical, and long lasting.
~Chandrakant R, Consultant, Pune, Maharashtra, India
Hinged Covers. Lightweight covers that are traffic bearing, good & safe pickholes, clear markings and identification.
~Steve D., Marketing/Sales, Atlanta, GA
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Buying AdviceTop

Q:
Do you have any advice for people relative to buying or using manholes and manhole covers?
14 answers
Answers:
Determine what you require it to do first, what are the specifications, and what different types of manholes are available.
~Joe Colfer, Purchaser, Naas Co kildare, Ireland
Ductile iron is stronger than cast iron. Cast iron uses old technology and is generally less expensive.
~Linda J, Marketing/Sales, San Diego, CA
Be careful they can take fingers off when they fall. Do not try to catch a falling cover.
~Steve D., Marketing/Sales, Atlanta, GA
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Q:
Is there any advice you want to share with users to help them avoid common errors in selection or usage of manholes and manhole covers?
11 answers
Answers:
Design should be such that, it should withstand external soil pressure, load on it, as well as corrosion of the liquid at ambient temperature.
~Chandrakant R, Consultant, Pune, Maharashtra, India
Understand the traffic issues - is the weight and depth of the cover enough to deal with heavy fast traffic lifting the lids out.
~Linda J, Marketing/Sales, San Diego, CA
If you are putting a pump in the manhole make sure the manhole is bigger than the pump.
~Joe Colfer, Purchaser, Naas Co kildare, Ireland
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