AASHTO LRFD AASHTO LRFD bridge design specifications, U.S. customary units with 2015 and 2016 interim revisionsDesign Specifications, U.S. Customary Units (7th Edition)

The AASHTO LRFD Bridge Design Specifications are intended for use in the design, evaluation, and rehabilitation of bridges, and are mandated by the Federal Highway Administration for use on all bridges using federal funding. These Specifications employ the Load and Resistance Factor Design (LRFD) methodology using factors developing from current statistical knowledge of loads and structural performance. This new edition includes clearer direction on seismic isolation design, as well as a number of major updates and revisions to the following sections: Section 3, Loads; Section 4, Structural Analysis; Section 5, Concrete; Section 6, Steel; Section 10, Foundations; Section 11, Abutments; and Section 12, Buried Structures pt. 1. Sections 1-6 pt. 2. Section 7-Index.