Translations:Versickerung und Retention/140/en
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=> this flow rate is 4.8 times smaller than with the pipe trench variant
=> the DRAINMAX tunnel can be dimensioned approx. 4.8 times smaller than the pipe trench
=> this flow rate is 4.8 times smaller than with the pipe trench variant
=> the DRAINMAX tunnel can be dimensioned approx. 4.8 times smaller than the pipe trench