D&B Engineering Contractors is a installer of helical piles/helical piers. Established in 1968. Installer for new foundations ... , remediation, repairs, deck supports, concrete walls, grade beams, retaining walls, tiebacks, crawl spaces, basements, and porches. D&B evaluates, soils reports, geotechnical reports, structural engineers recommendations to accurately install helical piers/piles for all types of new, commercial and residential foundations. Formerly installed concrete caissons/piles in bentonite/clay/expansive heaving soils. read more