ᐅ Wastewater inspection chamber on the property

Can someone tell me what options are available for the wastewater shaft on a property? Concrete and plastic, as far as I know. Plastic is the more affordable option. But what type/design and dimensions are required? What does it cost?

Thank you very much!

Hello,
concrete was used in our case. The structure is huge; from what I recall, I would estimate about 2.5 meters (8 feet) deep and at least 1 meter (3 feet) in diameter. The depth is determined by the position of the sewer (it has to go down to the sewer level), and the diameter is to make it accessible.
I would prefer concrete. It’s simply more robust, especially in case a digger accidentally drives over it during the construction phase. A plastic shaft wouldn’t survive that.

Regards,

Andreas