Project Details:

Solution:

Ground improvement utilizing stone columns or rigid inclusions was recommended for foundation support. Given the variability in soil conditions, the “one size fits all” approach was not economical or technically sound. Given this challenge, Menard’s CPT investigation included every column location. This was done to properly identify the soil profile. Evaluation of the CPT results concluded a robust ground improvement program would be required. CMCs were chosen as the solution. Menard classified each soil profile as “good” or “bad.” A pre-design footing analysis for both soil conditions determined the amount of CMC support required for each individual footing. This ensured that each footing would receive the correct amount of CMC support, while alleviating concerns for differential settlement between the column bays. While the CPT investigation and CMC installation were being performed, close coordination was required between Menard design engineers and the field crew to ensure CMC locations and depths were communicated in a timely manner to prevent delays.

This project highlights Menard USA’s ability to not only adapt to a fluid project, but a geotechnically challenging environment. With an abbreviated bid timeline and incomplete information, a plan was developed to ensure the client’s schedule and technical obligations were met in a fast-paced environment. Menard successfully installed 4,600 CMCs to support a new Amazon warehouse in Wilmington, DE.

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