A Decade Long Journey of Geotechnical Challenges and Solutions at a Mega Resort in Variable Karst Conditions

Over about a decade long plus period, multiple structures were designed and constructed at a mega resort in variable karst conditions. The karst conditions varied in their degree of complexity and the nature of the various proposed structures (i.e., high rise, low-rise and parking structures) dictated unique solutions for the various staged development of this mega resort. Some of the geotechnical solutions included: ground improvement systems with intermediate and deep low mobility grouting, augered cast-in-place piles of varied lengths and diameters, drilled shafts of varied lengths and diameters and micropiles of varied length. As a result of the geotechnical challenges, phased subsurface investigations were implemented as a means of addressing the highly varied subsurface conditions. Full scale loading testing of the various deep foundation elements, and ground improvement solutions was implemented along with some non-destructive or verification testing of production phase deep foundation elements. Lastly, performance monitoring during construction was also accomplished as a means of validating total and differential settlements of high-rise structures on variable length deep foundation elements.

Presented by

Matthew E. Meyer, P.E., BC.GE – Senior Principal - Langan Engineering and Environmental Services, LLC