Triad’s client had nearly finished construction of a 33,000 square foot office and warehouse facility when a subsurface exploration was requested to provide recommendations for overhead mobile cranes to be added to the warehouse portion of the project. In addition, the building was to be retrofitted for four swing job cranes. The cranes were to have their own column and foundations.
Triad performed four borings inside the building sampling the fill, residual soils and weathered bedrock to enable geotechnical analysis of the soils and the development of recommendations to support the cranes. In order to address fill soils beneath the foundations and minimize the potential for settlement, Triad recommended overexcavation of the foundations and slab areas with the placement of engineering fill to foundation or slab subgrade level.