Continuation of down-hole geophysical testing for rock sockets : [technical summary].

PDFTech ReportBDK75-977-51FoundationsBridge substructuresGeophysical prospectingDrive shaftsBoreholesWaveform analysisElastic wavesFinite element methodS wavesRock mechanicsFloridaFlorida. Dept. of TransportationHiltunen, Dennis R.University of FloridaUS Transportation CollectionThe rock socket is critical to a drilled shaftfoundation because it lies within a rock stratumand accounts for much of the capacity of thefoundational unit. Consistency of the rock\ue2\u20ac\u2122sstructure and composition must be identifedbecause it can be highly variable.This problem isacute in Florida, where sand, clay, limestone, andvoids can be layered in highly variable geologicalprofiles. Unanticipated ground structure belowa site can cause significant construction delaysand disputes. Therefore, more accurate sitecharacterization is crucial for ensuring reliableand economic substructure design