HDPE Manhole/Catch Basin Chimney Type

A custom HDPE access structure factory-welded onto a main pipe or fitting to reduce excavation, avoid oversizing and simplify installation.

Soleno’s manhole/catch basin chimney type is a custom HDPE access structure designed to be factory-welded directly onto a main pipe or manufactured fitting, such as an elbow or tee. This configuration makes it possible to add an access point to a storm sewer or stormwater retention system without oversizing the entire structure.

By integrating the chimney directly onto the pipe, this solution can reduce excavation, simplify installation and help optimize the overall cost of the system. It is especially relevant for conventional storm sewer networks, pipe retention systems and projects using Solflo Max or KUSTOMFLO pipes.

Factory welding of a custom-made chimney with a smooth or corrugated exterior wall on a main pipe or a manufactured accessory (elbow, tee, etc.).
The chimney diameter can be equal to or less than that the main pipe, which prevents oversizing it, reduces the amount of work during installation and at the same time, lowering the cost of the whole system.
Flexible configuration that eliminates angle limitation constraints between connections.
Lightweight HDPE structure that simplifies handling, installation and jobsite execution compared with traditional manholes.
Smooth exterior chimney configuration eliminates the need for frost-resistant geocomposite in certain applications.
Excellent resistance to de-icing salts, abrasives, chemicals, vibration and CL-625, H-25 and HS-25 loads.
Compatible with adjustable frames and covers according to project requirements.

Model shown: Manhole/catch basin with smooth exterior walls with adjustable cast iron grate and lid, and bell outlets with integrated gasket and clips (BIGC)

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Options

Several options are available to adapt the manhole/catch basin chimney type to project requirements, installation conditions and access needs.

Chimney on Solflo Max or KUSTOMFLO pipe, available upon request according to project configuration
Riser to adjust the final structure elevation
Ladder to facilitate inspection and maintenance access
Lifting eyelets to simplify handling on the jobsite
Special frame and cover according to application, load requirements and site conditions
Safety platform for structures requiring secured vertical access

Technical Documents

Data Sheet

Data Sheet – Manhole Catch Basin Chimney Type

pdf

Specs

Specifications – Manhole catch basin chimney type

pdf

Why Choose a Manhole/Catch Basin Chimney Type?

A custom access structure designed to reduce excavation and avoid oversizing

The manhole/catch basin chimney type allows an access structure to be integrated directly onto a main pipe without requiring a traditional oversized manhole. The chimney diameter can be equal to or smaller than the main pipe, helping optimize the structure size based on the actual access requirement.

Because the chimney is factory-welded onto the pipe or fitting, the solution can simplify installation, reduce excavation and help make better use of existing trenches. Its lightweight HDPE construction also makes handling easier compared with conventional structures and can reduce the need for heavy lifting equipment depending on site conditions.

This configuration is especially valuable in projects where installation efficiency, design flexibility and cost optimization are priorities, including storm sewer networks, large-diameter pipe systems and pipe retention basins.

Common Applications

Storm Sewer Networks

The manhole/catch basin chimney type can be used in conventional storm sewer networks to create an access point on the main pipe without oversizing the structure. It supports inspection or access needs while maintaining a compact configuration adapted to the network.

Pipe Retention Systems

This solution is especially relevant for stormwater pipe retention systems, where access chimneys can be factory-welded directly onto the main pipes. It helps facilitate access to the system while reducing excavation and installation constraints.

Custom Projects with Complex Connection Angles

The manhole/catch basin chimney type can be useful when the network configuration includes complex connection angles. Since the chimney is factory-welded onto the pipe or fitting, it offers design flexibility adapted to project constraints.

Unique Expertise and Effective Solution

A Soleno solution designed to optimize HDPE stormwater networks

The manhole/catch basin chimney type is based on Soleno’s expertise in factory-welded HDPE access structures. By welding the chimney directly onto a main pipe or manufactured fitting, Soleno can create a custom access solution adapted to the network layout and real jobsite conditions.

This approach can reduce the number of required components, limit excavation and make more efficient use of existing trenches. It helps simplify installation, accelerate jobsite execution and optimize the overall cost of the system.

Soleno’s know-how also helps avoid oversized structures when the chimney diameter can be equal to or smaller than the main pipe. The result is a more compact, lighter and better-adapted access structure for storm sewer networks, large-diameter pipe projects and stormwater pipe retention systems.

Substantial Savings

Less excavation, less oversizing and a more efficient installation.

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Validate a Pipe-Mounted Access Structure for Your Project

Looking to reduce excavation, avoid oversized structures or integrate an access chimney onto a main pipe? Our team can help you validate the right manhole/catch basin chimney configuration based on pipe diameter, connection angles, load requirements and jobsite constraints.

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FAQ - Frequently Asked Questions about our Manhole/Catch Basin Chimney Type

What is a manhole/catch basin chimney type?

A manhole/catch basin chimney type is a custom HDPE access structure factory-welded directly onto a main pipe or manufactured fitting, such as an elbow or tee. It allows an access point to be added to the network without requiring an oversized conventional structure.

What is this type of chimney used for?

It is used to create an access, inspection or collection point on a main pipe. This configuration is especially useful in storm sewer networks, pipe retention systems and projects where excavation or connection constraints must be optimized.

Why use a chimney on a main pipe?

A chimney installed directly on a main pipe helps reduce structure oversizing, limit excavation and simplify installation. It can be designed according to the main pipe diameter, connection requirements and jobsite constraints.

How is it different from a conventional manhole?

A conventional manhole is a complete structure installed within the network, often with a larger diameter. A manhole/catch basin chimney type is factory-welded directly onto a main pipe, creating a more compact access point when the project configuration allows it.

Can it be used with large-diameter pipes?

Yes. The manhole/catch basin chimney type can be designed on Solflo Max or KUSTOMFLO pipes according to project requirements. It is especially relevant when large-diameter pipes require access without oversizing the structure.

Does the chimney diameter need to match the main pipe diameter?

No. The chimney diameter can be equal to or smaller than the main pipe diameter, depending on access requirements, load conditions, installation constraints and the overall project configuration.

Can this solution reduce excavation?

Yes. By integrating the chimney directly onto the main pipe, this solution can reduce excavation and support a more efficient installation, especially when existing trenches can be used.

Is the structure custom made?

Yes. The chimney is factory-welded onto the required pipe or fitting based on project configuration. Options may include a smooth or corrugated exterior wall, riser, ladder, lifting eyelets, special frame and cover, and safety platform.

Can adjustable frames and covers be used?

Yes. Adjustable frames and covers are available depending on the application and project requirements. The final selection should be validated based on installation area, load requirements and structure configuration.

How do you choose the right configuration?

The right configuration depends on main pipe diameter, chimney diameter, connection angles, applicable loads, installation area, required accessories and access or collection objectives. For project-specific validation, it is recommended to consult a Soleno expert or fill out a fabrication form.