Adtek Engineers, founded in 1987, is an organization of engineering professionals providing civil, structural and geotechnical engineering, surveying and land planning services. Its structural engineering design services include steel detailing, light-gauge steel engineering, masonry and concrete design, foundation design and construction, and ceiling drawings. Its sustainable design program includes researching design technologies and materials, proposing alternatives to enhance productivity, reducing environmentally harmful substances and construction waste, and increasing the usage of recycled products. Its geotechnical engineers identify characteristics of subsurface materials to determine load-bearing capacity of foundations, floor slabs, retaining walls, earth enhancements and slopes. Adtek has a professional engineers license and serves clients throughout the United States. It has offices in Fairfax, Va., Beltsville and Frederick, Md., and Wilmington, Del.