ABSTRACT
The British Standard Code of Practice for Foundations (BS 8004: 1986) places piles in three categories. These are as follows:
Large displacement piles comprise solid-section piles or hollow-section piles with a closed end, which are driven or jacked into the ground and thus displace the soil. All types of driven and cast-in-place piles come into this category. Large diameter screw piles and rotary displacement auger piles are increasingly used for piling in contaminated land and soft soils.
