Plastic manhole chambers are available in a variety of shapes and sizes to meet different application requirements. Here are some common shapes of plastic manhole chambers and you can also see details:

1. Circular - Circular plastic manhole chambers are one of the most common shapes and are typically used in applications where the chamber needs to fit into a round pipe or opening. These chambers are available in a range of diameters and depths, depending on the application requirements.
2. Rectangular - Rectangular plastic manhole chambers are typically used in applications where space is limited or where the chamber needs to fit into a rectangular opening. These chambers are available in a range of sizes and depths and can be customized to meet specific application requirements.
3. Square - Square plastic manhole chambers are similar to rectangular chambers, but they have four equal sides. These chambers are typically used in applications where a square opening is required or where the chamber needs to fit into a square space.
4. Egg-shaped - Egg-shaped plastic manhole chambers are used in applications where there is a need for a larger capacity chamber, such as in sewage treatment plants or stormwater management systems. These chambers have a unique design that allows for a greater storage capacity while minimizing the footprint.
5. Custom shapes - In addition to the standard shapes mentioned above, plastic manhole chambers can also be custom-designed to meet specific application requirements. This can include irregular shapes, multi-level chambers, or chambers with special features such as built-in channels or baffles.

The shape of the plastic manhole chamber selected for a particular application will depend on a variety of factors, including the size of the opening, the required storage capacity, and the specific installation requirements.

Does shape effect the performance of manhole chamber?

Yes, the shape of a manhole chamber can affect its performance, as the shape can impact the flow of water, the accumulation of debris, and the overall capacity of the chamber. Here are some ways in which the shape of a manhole chamber can affect its performance:

1. Flow of water - The shape of the manhole chamber can affect the flow of water through the chamber, as well as the velocity and turbulence of the flow. The shape can impact the direction of the flow, and how the water enters and exits the chamber, which can affect the efficiency of the system.
2. Accumulation of debris - The shape of the manhole chamber can impact the accumulation of debris within the chamber. Certain shapes may be more prone to debris buildup than others, which can impact the performance of the chamber and require more frequent maintenance.
3. Capacity - The shape of the manhole chamber can affect its overall capacity, as different shapes may offer different storage volumes for water or other materials. The shape can also impact the depth of the chamber, which can affect its ability to handle larger volumes of water or materials.
4. Structural integrity - The shape of the manhole chamber can affect its structural integrity, as certain shapes may be more prone to collapse or damage over time. This can impact the overall performance of the chamber and require more frequent repairs or replacements.

In summary, the shape of a manhole chamber can impact its performance in a variety of ways, and selecting the appropriate shape for a particular application is an important consideration to ensure optimal performance and efficiency.