Rock-Socketed Shafts for Highway Structure Foundations (2006) / Chapter Skim
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does not mention rock-socketed drilled shafts. At the time of its publication, NCHRP Synthesis 42 was the most comprehensive study extant on the use of deep foundations for transportation structures.
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Issues to be addressed include quantifying material characteristics, rock mass behavior, and appropriate application of laboratory and field test methods. • The second challenge is determination of the axial load capacity of rock-socketed shafts.
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. Information provided includes a brief description of the anticipated site conditions, conceptual foundation types considered to be feasible, and conceptual evaluation of potential geotechnical hazards such as liquefaction.
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Some state DOTs may also make this report available to potential bidders. FIGURE 3 Design and construction process for drilled shaft foundations (adapted from Paikowsky et al.
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In each subsequent chapter, the topics being covered are considered within the context of the overall process as shown in Figure 3. This includes site investigation, geomaterial property evaluation, and design for axial and lateral loading.
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