What is Manhole? Know the Types and Functions
HI-GRID
Oct 28, 2025
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What is Manhole

Manhole is an access hole or cover that is usually installed on roads, sidewalks, or other infrastructure areas. The main function of manhole is to serve as an entry point for maintenance, inspection, or repair of underground systems such as drainage, electrical cables, and telecommunication networks. Without manhole, underground technical work would be much more difficult to perform.

Types of Manhole

In the construction field, there are several types of manhole commonly used. Each type has different functions and uses according to project needs.

  • Concrete Manhole: Commonly used on highways or areas with very heavy loads.

  • Cast Iron Manhole: Made of cast iron, known for its strength and durability.

  • BMC (Bulk Moulding Compound) Manhole: Lighter than iron, resistant to corrosion, and environmentally friendly.

With these types of manhole, projects can be adjusted according to location and function needs.

Main Function of Manhole

In addition to providing access to underground channels, manhole also has other important functions, namely:

  • Safety: Covers the access hole to ensure safety for pedestrians and vehicles.
  • Infrastructure Maintenance: Makes it easier for technicians to inspect water channels, cables, or pipes.
  • Air Circulation: Some manhole are designed with ventilation to allow air circulation inside the channel.

Because of its vital function, manhole must be selected from a trusted manufacturer to ensure quality and durability.

Hi-Grid BMC Manhole from PT Origa Mulia FRP

If you are looking for high-quality manhole, PT Origa Mulia FRP offers a flagship product called Hi-Grid BMC Manhole. This product is a modern solution made from BMC material that is lighter, stronger, and resistant to weather and corrosion. Suitable for various urban infrastructure and industrial area applications.

PT Origa Mulia FRP not only manufactures but also ensures that every manhole marketed has passed high-quality standards. Therefore, you can get a product that is durable as well as more economical.