About
Stanley D. Lindsey and Associates, Ltd. (SDL) is a leader in structural engineering. Founded in 1966 in Nashville, with additional offices in Atlanta, Charlotte, and Bangalore, our firm has built a legacy of excellence, delivering innovative structural design and consulting services across the United States and internationally. Our experienced team collaborates with architects, owners, and design-build contractors to create solutions that stand the test of time, combining scientific knowledge with practical application. In addition, our Erection Engineering Division works with steel erectors, fabricators, and contractors to find the best solution for construction planning.
At SDL, we pride ourselves on a diverse portfolio spanning commercial, healthcare, education, industrial, and specialty structures amassed over nearly 60 years. Our engineers are registered in 47 states, the District of Columbia, Puerto Rico, the US Virgin Islands, and Saskatchewan. Whether it's new construction, renovation, construction planning, or disaster assessment, SDL is dedicated to providing unparalleled engineering services tailored to meet your project's needs. Explore our site to learn more about our services, portfolio, and the talented professionals who drive our success.
History
Founded by Dr. Stanley D. Lindsey in 1966, SDL began with the design of the Student Union building at Tennessee State University. Since then, we've been at the forefront of structural engineering, pioneering the use of computers in design and integrating computer-aided design with drafting.
In 1989, we expanded to Atlanta, and in 2017, we acquired Bulla Smith Design Engineering in Charlotte. In 2024, we opened an office in Bangalore, India. SDL currently has four offices - Nashville, Atlanta, Charlotte, and Bangalore.
Technologies
SDL employs the latest commercial analysis software and in-house developed tools for complex projects, including finite element analysis, non-linear analysis, and material-specific analysis. Our drafting and modeling capabilities utilize software such as Autodesk Revit, Navisworks, Dynamo, and Tekla.
We leverage collaboration platforms such as Microsoft Teams, Bluebeam Studio, and Autodesk Construction Cloud to facilitate seamless communication, project management, and effective collaboration with clients and remote team members.
Sustainability
SDL is committed to sustainable structural design, aiming for net-zero embodied carbon by 2050 as part of the SE 2050 Initiative. With LEED AP professionals in all offices and active involvement in sustainable design efforts, we lead the way in creating a greener future.
