Mag. Dr. Michael Premstaller
Premstaller Geotechnik ZT-GmbHZell am See - Hallein - Traunstein
How many drillings are necessary?
A case study from AUSTRIA
Aerial view and geomorphology
3 D Ansicht Zeller See von SüdenVorne SalzachtalPfeil Hoferareal
Location of the construction site
Project: two floor underground parking
Lake – dr ink ingwater qual i ty
Water protection no drainage dense excavation pit
short time quick, effective and safe construction
Hotel in operation safe underpinning
Geologic investigation
Geologic data points
expected soil:uniform gravely sand
CPT possible
2 CPT enough
Layout of Jet-Grouting and Pile Wall
Cross section
-8,01 m
-12,04 m
Jet-Grouting-Works
Excavation and soilcrete columns
Thank you foryour attention!