This infiltration tunnel inspection end shaft by graf is a brilliant way to plug the end of an infiltration tunnel system without completely blocking the flow. With one module typically weighing as little as 11 kilos, the section can be easily handled. Graf's infiltration ... Read More
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This infiltration tunnel inspection end shaft by graf is a brilliant way to plug the end of an infiltration tunnel system without completely blocking the flow. With one module typically weighing as little as 11 kilos, the section can be easily handled.
Graf's infiltration tunnel inspection end shaft is to be used with the graf infiltration tunnel system. The system can be installed in private and rural areas, consisting of one or several tunnel modules with two end plates that can be extended at will.
The surface beyond the tunnels is lorry-bearing. This makes the possibilities versatile. Especially when the permanent load can be up to 59kN/sqm.
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