Location and topo-graphy strongly influence selection of the foundation. Local practice is usually an excellent guide. Driven piles are often undesirable in congested urban locations because of noise, inadequate clearance for pile driving, and the potential for damage caused by vibration, soil densification, and ground heave. Prefabricated piles may also be undesirable if storage space is not available. Other variables may restrict the utilization of deep foundation:
(1) Access roads with limited bridge capacity and head room may restrict certain piles and certain construction equipment.
(2) The cost of transporting construction equip-ment to the site may be significant for small, isolated structures and may justify piles that can be installed using light, locally available equipment.
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