In 1923, two German-trained engineers, Richard Charles Sandlass and George Arnold Wieman, formed the consulting engineering firm of Sandlass, Wieman & Associates in Baltimore. The firm prospered from steady growth and diversification of services. With the addition of Edward Rummel, Howard Klepper and William Kahl, the firm changed its name in 1951 to Rummel, Klepper & Kahl. RK&K is a consulting engineering firm that is headquartered in Baltimore. The firm has been providing services throughout the mid-Atlantic and Southeastern regions since 1923. RK&K's expertise is in transportation, sanitary, environmental, civil, structural, geotechnical, mechanical/electrical and construction engineering. Ranked No. 129 on the 2005 Engineering News Record s listing of the Top 500 Design Firms, RK&K services an array of Federal, State and local clients from its headquarters and 11 branch offices. The company is privately owned and employs nearly 630 people.