Foundation types for multistorey

Hi I've to design an 11 storey building with a double basement. I'm stuck on my foundation design for my prelim design.Conditions:Basement 13 metres totalGroundwater @ 2 metres. existing buildings at both sides (city centre location)Rock @ 12m at one end of the building and 15m at the other end (80metres between both boreholes)Unable to blast rock due to location.Can anyone help me with the type of foundation to use and the construction of the basement with ref to the ground water? also how to remove the rock without blasting?Thanks