Foundation engineering involves the determination of the best suited and most economical foundation types and depth for our clients' projects based on the strength of foundation soils and rocks. We provide geotechnical information, design data, and recommendations for slab-on–grade, mat foundation and drilled piers foundation to the project structure engineer. We conduct foundation inspections and evaluations of the existing structures and provide written recommendations to the project structural engineer for repair such as underpinning. If you'd like to learn more about all the foundation and geotechnical services we offer, contact us today at O'Terra Geotech Group, Inc..