Square Manhole Covers

What Are Square Manhole Covers? 

Square manhole covers are inspection chamber covers for manholes, and are designed to provide secure and easy access to underground drainage systems. 

These covers serve a crucial role in protecting the openings of manholes and inspection chambers from unauthorised access while allowing maintenance and inspection work to be carried out efficiently. 

Available in a variety of materials, including galvanised steel, cast iron, ductile iron, plastic, and sometimes even composite materials, square manhole covers are designed to suit a wide range of applications and environments.

The choice of material for a manhole cover depends on its intended use, the weight it must bear, and environmental factors. 

Cast iron and ductile iron drain covers are renowned for their durability and strength, making them ideal for use in areas with heavy traffic. 

Galvanised steel and plastic covers, on the other hand, are lighter and may be used in pedestrian areas or places with lighter traffic. 

The square shape is specifically chosen for its ease of installation and the simple fact that, unlike round covers, they cannot fall through their own openings if turned diagonally.

Benefits of Square Manhole Covers

• Easy Access and Safety: Their square shape ensures that they cannot accidentally fall into the manhole or inspection chamber when removed, providing a safer working environment for utility workers.
• Versatility in Fit: The variety of sizes and materials available means that there is a square manhole cover to suit almost any type of underground drainage system, from residential developments to highways.
• Durability: Materials like galvanised steel, cast iron, and ductile iron offer excellent longevity and can withstand heavy loads, making them suitable for both light and heavy traffic areas.
• Range of Accessories: Square manhole covers often come with a range of accessories, including frames, keys, and lifting handles, making them easier to install and maintain.
• Aesthetic Appeal: With a variety of styles and designs available, square manhole covers can be selected to blend in with the surrounding area, ensuring that practicality does not come at the expense of aesthetics.