Office: (425) 557-8628

Welcome to Pile Contractors, Inc.

Pile Contractors' specially trained crews have provided deep foundation and shoring solutions for over 700 projects in Washington, Oregon, Idaho and Montana.  Pile Contractors has the expertise and the experience to handle any foundation or shoring project.  Our resume includes projects from a number of markets including Commercial and Industrial Buildings, Roads and Bridges, Residential and Emergency Repair.


Our Services

Augercast Piles

Augercast Piles are concrete piles drilled with a continuous flight auger to the specified depth. Then a high strength fluid grout is pumped through the auger, as the auger is withdrawn.

Reinforcing steel is then inserted in the completed grout column to add bending moment to the pile.

Augercast piles are high in friction and end bearing with mi...


Drilled Shafts

Drilled shafts are large diameter piles drilled with a high torque machine for very high capacity foundations.

Drilled shafts can be cased as required depending on soil conditions.

Reinforcing steel is placed in the excavated shaft and then concrete is placed by a full depth tremie pipe to fill the shaft. Drilled Shafts are very high capacity an...


Driven Piles

Driven piles are made of wood or steel and installed using an air or diesel pile hammer.

The pile installation is monitored to determine pile capacity by the soils engineer.

There are many types and capacity of driven piles - from 2 inch diameter pin piles to large H beams and pipe piles.

Driven piles are very versatile and are used t...


Soldier Pile Shoring

Soldier Pile Shoring consists of multiples piles spaced apart from each other to support a change of elevation. The piles are usually H beams installed in drilled shaft.

After the piles are installed lagging is placed between the H beams to restrain the soil between the piles. Deeper excavations may require tiebacks to be installed at the piles for additio...


Sheet Piles

Sheet Piles are interlocking steel sections that are driven in the ground to support excavations or soil removal. Since the sheets make a continuous steel wall, they are most useful to stop water infiltration, loose soil infiltration, and migration of soils. Sheet piles are manufactured in many shapes and thicknesses for use in all situations , from lightweight resid...



ADSC International Association of Foundation Drilling
DFI Deep Foundations Institute
OMWBE DBE/SBE Certification #S000025485