Page 1 Situation Olympic Stadium Kiev, Ukraine Project report Due to the existing building struc- ture, a conventional gravity drai- nage system could only be realized with substantial technical and fi- nancial effort. In addition, the ex- pected peak flow would have gre- atly overloaded the existing waste- water infrastructure. The require- ment was for a sanitary system that enables a flexible pipe routing with small pipe diameters, an

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