Put F&R’s Vast Geotechnical Knowledge to Work for Your Project. With over 60 years of geotechnical experience, Froehling & Robertson, Inc. is an undisputed leader in the field. Our team is comprised of registered professionals with practical experience in all phases of foundation design and earthwork construction. With an in-house laboratory and an advanced suite of software, our engineers can thoroughly analyze soil properties and provide the foundation design most appropriate for your structure. F&R also has complete in-house drilling capabilities, thus making it easier to coordinate needed site explorations and keep your project on schedule.