PDHLibrary.com was started in 2009 and is the continuing education division of Southard Engineering, Inc. Southard Engineering, Inc is a structural engineering firm located in Gainesville, Florida and was started in 2001. Southard Engineering's consulting practice involves the design of low rise structures such as office buildings, schools, retail buildings, emergency operation centers, metal building foundations, and most other building types. We also provide specialty engineering services for roof system design.