Understanding T15, T22 and H-20 Load Ratings

Choosing the Right Underground Infrastructure for Every Application

When selecting an underground enclosure, handhole, or vault, size and material are only part of the equation. One of the most important considerations is the load rating, which helps determine whether a product is appropriate for the conditions it will encounter after installation.

At CESCA, our underground infrastructure solutions are designed for different applications and environments. Understanding ratings such as T15, T22, and H-20 can help engineers, contractors, utilities, and project managers select the right solution for their project.

Why Load Ratings Matter

Underground enclosures may be installed in sidewalks, parking areas, utility corridors, and other locations where they can be exposed to different levels of traffic and external loads.

Selecting an enclosure designed for the intended application helps protect the infrastructure inside while supporting reliable, long-term performance.

CESCA offers solutions across its product families for a variety of underground infrastructure requirements, with product specifications identifying the applicable load rating for each model.

T15 and T22 Rated Solutions

Many CESCA VAULT products are available with T15 and/or T22 ratings and are designed for underground utility and infrastructure applications.

CESCA VAULT products combine advanced composite materials with features engineered for demanding environments. Depending on the model, product specifications identify characteristics including high impact resistance, UV resistance, non-conductive and non-metallic construction, and resistance to chemicals and moisture.

Several CESCA VAULT models are specified for incidental traffic applications such as parking lots and sidewalks, making them a versatile solution for modern underground networks.

H-20 Solutions for Demanding Applications

For applications requiring a heavier-duty solution, CESCA’s C-CAST precast concrete products include models with an H-20 load rating.

C-CAST enclosures are manufactured from precast hydraulic concrete with steel reinforcement and are designed to provide strength, durability, and long service life for underground infrastructure.

These solutions are particularly suited to projects where reinforced concrete construction and higher load capabilities are required.

More Than Just a Load Rating

Choosing the right underground enclosure also means considering factors such as:

  • Installation location and expected traffic
  • Enclosure dimensions and required internal space
  • Material and structural requirements
  • Environmental exposure
  • Cover and access requirements
  • Applicable project standards and specifications

CESCA’s product portfolio includes polymer concrete, fiberglass/composite, and precast concrete solutions, allowing project teams to select an enclosure according to the specific needs of the installation.

Building Infrastructure for the Future

From telecommunications and fiber networks to utility and municipal infrastructure, underground systems need protection that can perform reliably for years.

Understanding the differences between available load ratings is an important part of selecting the right enclosure for each application.

CESCA is committed to engineering underground infrastructure solutions built around strength, durability, performance, and the needs of modern networks.

Engineering the Future of Underground Infrastructure, Today.