Water pipeline renewal using horizontal directional drilling in Bad Laasphe – Großenbach and Weide

Summary

The tender concerns the renewal of water pipelines in the Großenbach and Weide areas of Bad Laasphe using horizontal directional drilling, a trenchless construction method. The works include approximately 1,360 m of directional drilling and 200 m of pipe insertion into an existing pipe, together with excavation, PE pipe welding, pipeline cleaning, flushing, disinfection and pressure testing. The works are scheduled for 5 April 2027 to 31 July 2027. The tender must be submitted electronically by 5 November 2026 at 10:00; paper submissions are not permitted. Price is weighted at 100%. The contract is not divided into lots and alternative tenders are not permitted. The bidder must submit, among other documents, a suitability declaration, the required DVGW proof for PE pipe welding, subcontractor information where applicable, and a priced technical offer compliant with the specification. The company must have the expertise required for directional drilling, water pipeline installation and PE welding. A DVGW GW 301 qualification or equivalent, relevant references and valid DVGW GW 330 certificates for on-site PE welders are required. No specific minimum turnover amount is stated, but turnover for comparable works during the last three completed financial years must be declared and the bidder must be prepared to provide three reference certificates. The offer must comply with the DVGW, DIN, DVS and PAS 1075 technical requirements and with North Rhine-Westphalia wage and minimum employment conditions.