FEASIBILITY OF MICROPILES

Micropiles have specific advantages compared to more conventional support systems. In general, micropiles may be feasible under the following project-specific constraints:

1. • project has restricted access or is located in a remote area;
2. • required support system needs to be in close pile proximity to existing structures;
3. • ground and drilling conditions are difficult (e.g., karstic areas, uncontrolled fills,boulders);
4. • pile driving would result in soil liquefaction;
5. • vibration or noise needs to be minimized;
6. • hazardous or contaminated spoil material will be generated during construction; and
7. • adaptation of support system to existing structure is required.