At Build Plumb Plastics, we provide a diverse selection of manhole covers for both manholes and PPIC inspection chambers, along with gully grates sourced from leading suppliers like Polypipe and Clark Drain, as well as other reputable manufacturers and fabricators. Our inventory includes manhole covers made from various materials and graded to different weight loading classes to meet the requirements of various applications.

Understanding Manhole Cover Weight Loading Capacity

According to BS EN 124:2015 standards, access covers and gully grates are categorized into different classes, ranging from A15 for light duty covers to F900 for heavy duty manhole covers applications. Selecting the correct class of cover is crucial to ensure safety and prevent damage. Our heavy-duty manhole covers are designed to meet B125 and C250 load ratings, offering durability and reliability.

Group 1Group 2Group 3Group 4Group 5Group 6
A15 weight load classB125 weight load classC250 weight load classD400 weight load classE600 weight load classF900 weight load class

Replacement Manhole Covers Made Easy 
We often receive inquiries from customers needing replacement manhole covers due to damage from vehicles or wear and tear. It's essential to choose a replacement lid that matches the frame to maintain structural integrity and weight loading capacity. If the lid needs replacing, it's likely the entire cover and frame will require replacement unless the lid was recently installed.

Replacing a manhole cover for drainage inspection chamber

Measuring and Installing the Right Cover
When replacing a manhole cover, it's crucial to measure the size of the manhole or inspection chamber below, rather than the frame or lid size. Proper installation involves removing the old frame, leveling and bedding in the new frame, backfilling around it, and then installing the cover. For plastic inspection chambers deeper than 1.2m, a reducing ring may be needed to comply with building regulations.

Enhance Aesthetics with Recessed Manhole Covers 
Recessed chamber covers offer a sleek solution for maintaining access to drainage systems without sacrificing aesthetics. They can be used internally or externally to create a continuous floor finish while ensuring easy access to the drainage system.

Heavy-Duty Gully Grates for Effective Drainage
Our range of heavy-duty gulley grates are designed for road gullies and yard gullies, preventing debris from entering the drainage system while allowing water to drain away efficiently.

Explore our selection of manhole covers and gully grates to find the perfect solution for your drainage needs or call our helpful team on 01255 258525.

Read More
  • What are manhole covers?
    Manhole covers are removable lids or covers used to secure access points to underground utility and drainage systems. They are typically installed on manholes, which are vertical chambers or shafts that provide access for maintenance, inspection, and repair of underground infrastructure.
  • What materials are commonly used for manhole covers?
    Manhole covers are commonly made from materials such as cast iron, ductile iron, steel, concrete, and composite materials. The choice of material depends on factors such as load-bearing requirements, durability, and the specific application.
  • What are the different types of manhole covers?
    There are various types of manhole covers available, including solid covers, covers with ventilation holes or slots, recessed covers, locking covers for added security, and covers with special features like anti-slip surfaces or load-bearing capabilities.
  • What is the purpose of manhole covers?
    Manhole covers serve multiple purposes, including providing access for maintenance and inspection of underground utility systems, preventing unauthorized entry or accidental falls, and protecting the infrastructure from debris, water, and environmental factors.
  • Are manhole covers standardized in terms of size and load-bearing capacity?
    Yes, manhole covers are typically standardized based on size and load-bearing capacity. Different regions may have specific standards and regulations governing the dimensions, load ratings, and installation requirements for manhole covers.
  • How do I choose the right manhole cover?
    When selecting a manhole cover, factors such as anticipated load requirements (pedestrian or vehicular traffic), location (roadway, sidewalk, or green area), material durability, and compliance with local regulations should be considered.
  • Are manhole covers designed to be tamper-proof or theft-resistant?
    Manhole covers are often designed to deter tampering and theft. Some covers feature locking mechanisms or anti-theft devices to prevent unauthorized access and ensure the security of underground infrastructure.
  • Are manhole covers durable and resistant to environmental conditions?
    Manhole covers are designed to withstand environmental factors such as heavy loads, weathering, corrosion, and chemical exposure. The choice of material and quality of construction contribute to the durability and longevity of the covers.
  • Do manhole covers require maintenance?
    Manhole covers generally require minimal maintenance. Regular inspections to ensure they are securely in place, free from damage or wear, and properly aligned with the manhole frame are recommended. Cleaning debris from the cover and frame is also important to maintain functionality.
  • Are there any regulations or standards for manhole covers?
    Local regulations, building codes, and standards dictate the requirements for manhole covers, including load-bearing capacities, dimensions, and safety features. Compliance with these regulations is essential to ensure proper installation and safe operation of manhole covers.