Make sure you have a high-performing drainage solution for your property with the Graf infiltration tunnel. Combine it with your soakaway and attenuation to create a tunnel with a permanent load level of up to 59kN/sqm. Ideal for lorry-bearing. Suited to private or rural area... Read More
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Make sure you have a high-performing drainage solution for your property with the Graf infiltration tunnel. Combine it with your soakaway and attenuation to create a tunnel with a permanent load level of up to 59kN/sqm. Ideal for lorry-bearing.
Suited to private or rural areas, the system consists of one or several tunnel modules with two end plates to extend as needed. The laying is realised in one or more lines at the same level.
The weight of a single module is 11 kilos to ensure handling is much more efficient.
Please note:
Question:
Does this comply with the General Binding Rules for discharge to ground for a domestic sewage treatment plant?
Answer:
This would be determined by your local authority.
Question:
How many cubic metres does this hold?
Answer:
Graf are unable to advice on cubic metres, but have advised it is 300L capacity
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