The steep dipping and variable nature of karst surfaces poses problems for installation of driven piles. Very often, the consequences of hard driving piles over steeply-inclined karst are slipping and buckling of piles. To tackle these problems, the following two options are mostly adopted:
(i) Pre-boring is carried out in steep dipping karst surface as this method could penetrate hard layers;
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(ii) Reinforcing the end section of driven piles by welding stiffening plates
This question is taken from book named – A Self Learning Manual – Mastering Different Fields of Civil Engineering Works (VC-Q-A-Method) by Vincent T. H. CHU.
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