Project Details:

Solution:

Excavation and replacement of the deep fill was considered for the site. However, this would be impractical due to the depth of excavation and need for shoring -- and the associated construction debris, groundwater and potential for handling contaminated soils. Menard provided an economical and time-saving solution with CMCs.

The use of CMCs enabled Menard to bypass obstructions within the fill, while creating minimal spoils and minimizing the need for disposal. By virtue of the CMC design, a portion of the building footprint is supported by ground improvement (area of deep fill) and the remaining footprint is supported on grade. The General Contractor planned to “cap” the site with lime-stabilized soil (shrink/swell mitigation of plastic soils). Menard used the lime-stabilized soil as its Load Transfer Platform (LTP), in lieu of crushed aggregate, which provided cost savings for the ground improvement scope. Menard installed 453 CMCs, totaling 13,850 LF, to a maximum depth of 35 ft. Menard designed a layout of CMCs at each footing to support column loads from 25 to 100 kips. The slab on grade was designed for uniform loading of 450 psf. The design provided for 1 in of post-construction settlement with a differential settlement of less than a 1/2 in, meeting the performance criteria of the building.

For a new Home Depot in Houston, Menard successfully installed CMCs, eliminating excavation and disposal of contaminated soils.

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