Excavator Mounted BFS18 Vibrolance in action
The project was conducted by FRANKI Fondations, specialized in deep foundations, a part of FAYAT Group. FRANKI has used PTC VL18BFS Vibrolance in order to install 850 stones columns for the reinforcement of the ground required to support the 5 storey university building.
The BFS system allowed the gravel to be directly fed at the bottom of the stone column without removing the Vibrolance. This technique offers better quality as a consistent diameter and no risk of discontinuity.
The 850 columns has been installed with a grid of of 1.5m and a 4m to 6 m depth .
Thanks to its Bottom-Feed System, the productivity of the Vibrolance was higher than a basic top feed system. For this jobsite, productivity attained 150-200 linear meters a day which was a positive result for the customers.
Specially designed to be mounted on hydraulic excavators, the VL18 BFS was mounted here on a 35t KOMATSU PC350HLC on rent. Costs were optimized and investment reduced.