Auger Cast Piling

Hollow Stem Auger Drill To Install Cast In Place Grouted Pile

Auger cast piling is a deep foundation pile system that is installed by drilling to a specified depth with a continuously flighted hollow stem auger. High strength grout is then pumped through the auger as it is slowly withdrawn thereby displacing the spoils* and leaving a clean column of fluid grout in which a rebar cage is lowered. The cages typically extend from above the piles part way down to the tip with a full length bar in the center. The advantage of the auger cast method of pile installation is that the casting component eliminates the need to use casing in loose or wet soil conditions. McDowell NW, Inc. installs auger cast piles in varying sizes including 12”, 14”, 16”, 18”, 24” & 30” diameters and to depths up to 90 feet.

*spoils are a combination of the soil that is displaced and excess grout.

About Us

Since 1946, McDowell Northwest, Inc. has been serving Northwest Builders with the best staff and equipment to get the job done right, and always at a competitive price...

Recent Projects

McDowell’s roots in the construction industry goes back to the early 1900’s working on the Denny regrade in Seattle. Since the late 60s we have specialized in piling and deep foundations...


“We were very impressed with McDowell Northwest at our job in Seattle. They worked hard and were very efficient in getting the job done safely and in a timely manner.”

McDowell Pile King

Looking for foundation piling, helical pipe piling, or shoring walls? Click here to visit McDowell Pile King...