Grout Systems was contracted to design and install 898 – 16” diameter Auger Cast Piles each 45’-0” in length for a total of 40,410 LF. These piles are being used to support the Headworks Facility Structures.
The existing Main Outfall Sewer that runs through the Headworks building was constructed in 1927 and remained in service during our installation. Due to the age of the sewer, it was crucial to not disrupt its operation. There was also a need to excavate in close proximity of the sewer. These factors determined significant consideration was needed in evaluating the proper foundation system to support it. Grout Systems, Inc. was contracted to design and install an additional 330 - 16” diameter Auger Cast Piles each 45’-0” in length for a total of 15,030 LF. Many of these piles were drilled and grouted within inches of the sewer.
All piles were installed in up to 37’-0” of uncontrolled fill near the Cuyahoga River. Due to encountering obstructions, locations became problematic but did not present any issues that couldn’t be overcome. This is a result of extensive load testing to 3 times design and the use of strain meters that were implemented to interpret unit skin friction in differing soil zones. GSI believes that the Auger Cast Pile was the most economical and safest installation choice for this project.