Some representative D'Appolonia projects related to expansive foundation materials and heave are provided in the following:
Evaluation of Pyritic Shale Expansion at a Manufacturing Plant
D’Appolonia was retained to perform a geotechnical evaluation of the cause of floor slab and interior partition wall heave at a clothingmanufacturing facility in Kentucky. Our scope of work included assessment of potential damages due to heave and the development of measures for eliminating the problem. Remediation included excavation of expansive material at the surface, sealing the exposed surface and backfilling with non-expansive material, and support of floors and partition walls on a system of new columns and grade beams.
Forensic Evaluation of Floor Slab Cracking and Ground Heave
D'Appolonia performed a forensic geotechnical evaluation for identification of the cause for floor slab cracking and crawl space ground heave at a school in Western Pennsylvania. Our evaluation included review of design and construction documents; reconnaissance of the building interior, exterior and crawl space; a floor slab level survey; and sampling and testing of mine spoil from the crawl space and around the outside of the building.
Remediation of Expansive Shale at Estill County Middle School
D’Appolonia assessed site conditions and developed measures to remediate heave of foundations and floor slabs at a school in Estill County, Kentucky. Review of site topographys and building plans indicated that nearly the entire structure was constructed on black shale. Our recommendations included excavation of shale material to a depth of 3 feet, surface sealing, backfilling with inert material, and construction of a structural floor.
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