The Influence of Construction “Side Effects” On Existing Pile Foundations

By H. G. Poulos

This paper explores some of the “side effects” of investigation and construction processes, and their possible effects on existing deep foundations. The processes considered will include:

• the driving of piles
• the installation of piles by jacking
• drilling holes in stressed ground for the purposes of investigation or construction
• carrying out shallow excavations, for example, for pile cap construction or the installation of services
• carrying out deeper excavations, for example, for a development on a site adjacent to the existing pile foundation.