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The Graf Infiltration Tunnel has been mainly designed for the use in private and rural areas
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The system consists of one or several tunnel modules and two end plates. The system can be extended at will to any length
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The system which consists of one or several tunnel modules and two end plates can be extended at will
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The laying is realized in one or more lines of the same level
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As the weight of one module is only 11 kilos, the handling of the Infiltration Tunnel is excellent
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The surface beyond the tunnels is lorry-bearing which offers versatile possibilities
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The infiltration tunnel can be loaded permanently up to 59kN/sqm and thus is also suitable for lorry-bearing
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5 years warranty