Pier | Pile |
| Pier foundation is a type of deep foundation that basically consists of a cylindrical column of large diameter. | A Pile foundation is a type of deep foundation in which the loads are transferred to a low level by means of vertical timber, steel, or concrete. |
| Pier foundation are adopted when there is firm bearing strata are available but at such a depth the construction of other types of foundation are not economical. | Pile foundations are adopted when there is no firm bearing strata of soil is available at its reasonable depth. |
| Pier is drilled with the help of a drill machine. | Piles are driven through the overburden soils into the load-bearing strata. |
| Pier foundation transfers the total load through the bearing only in the underneath strata. | Pile foundation transfer the load in the underneath starter through the friction as well as bearing. |
| Pier foundations are generally constructed on the shallower depth. | Pile foundation is generally constructed on the greater depths. |
| Pier foundations are constructed to resist the small intensity of loads. | Pile foundations are constructed to resist the greater intensity of load. |
| The types of pier foundations are masonry or concrete piers and drilled caissons. | The types of pile foundations are anchor piles, uplift piles, sheet and batter piles, friction piles, bearing piles, etc. |
| Piles are always below ground level. | Pier are always above the ground level. |
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