Depending on the existing capacity of the
equipment, the geological conditions of the construction, the designing
regulations on piling depth and maximum allowed depth, the Contractor can
choose suitable pile method. Principles for selecting hammer as follows:
• Enough capacity to put the pile down to
designing depth with the maximum allowed depth as specified in designed
document, through the thick soil layer even the hard cladding layer;
• Causing the dynamic press not over the
allowed press of pile to limit the risk of cracking pile
• Total of hammering times or total time of
pile leading is not over the limiting value in the design to prevent the risk
of tired pile;
• The maximum allowed depth of pile is not too
tiny can caused