On Spun Pile and Bored Pile

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There are many types of piles used by the Civil engineer when preparing the foundation of a building. Here's a look at 2 common kinds:

Spun Pile
  • Precast concrete pile - stable conditions, uniform strength
  • Of fixed length
  • Tends to be cheaper (at least in Singapore)
  • Could be (and is usually) hollow inside the pile
  • Cast using a machine that pushes the pile into the ground, could be damaged during driving
  • Needs excavation to cast, and may push unstable soil around
  • Cannot be driven in very large diameters
  • Could be used quickly after piling
  • Could carry less weight per pile and is usually used for low to medium height buildings


Bored Pile
  • Cast in place concrete pile - depends on weather, not so uniform strength
  • Could be extended to desired length
  • Tends to be more expensive (in Singapore)
  • Is solid inside the pile
  • Cast using a bored piling machine that drills into the ground to remove soil, and is thus more stable to surrounding conditions
  • Could be cast without excavation of large areas
  • Requires curing time before pile could be used
  • Could carry more weight per pile and is usually used for medium to high rise buildings (such as high rise apartments, office buildings, etc.)
In both cases, if more weight is required to be distributed, more piles could be used to spread out the weight per square metre.

Reference: https://theconstructor.org/geotechnical/classification-of-piles/1799/

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