Change your cover photoUpload Change your cover photoUpload Change your cover photo Jan Machacek This user account status is Approved followers0 following0 Follow About About Posts Posts Comments Comments This user has not added any information to their profile yet.Company / InstitutionInstitute of Soil Mechanics and Rock Mechanics (IBF)CountryGermanyRegistration DateJoined 19.4.2018User LocationKarlsruhe, Germany Only fill in if you are not human