The construction site for this project is a petrol station in Austria. To ensure that no toxic materials would contaminate the groundwater, Stump-Franki secured a subsoil area designated by an environmental auditor and planner using jet grouting and secant concrete pile walls. The resultant jet-grouted concrete block serves to contain any contaminants and provide ongoing protection for the groundwater. Static stabilisation for the individual foundations, which were prone to settlement, represented a key element of the project. The Stump-Franki team carefully applied pilgrim step procedures to reinforce the foundations with jet-grouted underpinnings.
The Global Contractor Safety Council congratulated Stump-Franki on the successful efforts of their experienced and safety-conscious employees. The Council particularly praised the safety culture on site and the integration of the works into the overall project. Each morning before construction work began, all members of the team attended a safety briefing with the site supervisor and project manager. The briefing covered safety in the workplace, the planned work procedures and relevant accident prevention strategies. Trenches were dug near the drilling area to collect contaminated slurry backflow and prevent contamination of the surrounding soil. This also enabled cost savings in excavated soil and waste removal. The construction scheme was successfully completed and handed over to the employer on schedule.