This project involves the geotechnical investigation and assessment of soil groundwater conditions and the design and construction of a permanent waterproofing basement under the watertable level at a residential building on Poseidonos Avenue in Voula, Athens.

The geotechnical investigation included the opening of three investigation shafts and the execution of a 12.0 m rotary drilling borehole, in-situ testing (SPT, permeability tests), collection of representative samples for laboratory testing and standpipe piezometer installation.



Based on the results of the performed geotechnical investigation and evaluation of soil and groundwater conditions, the waterproofing method was designed for the construction of the underwater basement. Groundwater control, essential for the completion of the excavation and construction works, was achieved with the installation of a dewatering well and the 24-hours operation of the necessary pumping systems.



Design and Construction of basement waterproofing in residential building in Voula, Attica