Civil Engineering Association

MANUALS FOR THE DESIGN OF BRIDGE FOUNDATIONS: SHALLOW FOUNDATIONS, DRIVEN PILES, RETAINING WALLS AND ABUTMENTS, DRILLED SHAFTS, ESTIMATING TOLERABLE MOVEMENTS, AND LOAD FACTOR DESIGN SPECIFICATIONS AND COMMENTARY

This report documents and presents the results of a forty-two month study to develop load factor design procedures for highway bridge foundations. The findings of the study are presented in a new draft AASHTO Design Code and Commentary for foundations and retaining walls, and in five engineering manuals, and a separate report on code calibration. The engineering manuals address (1) design of driven pile foundations, (2) design of drilled shaft foundations, (3) design of shallow footing foundations, (4) design of retaining walls and abutments, and (5) estimation of tolerable settlements of structures. The manuals present state-of-the-art design methods, and illustrate their use through examples. This study shows that the foundations of bridges and other structures can be designed effectively using load factor design procedures, and it establishes procedures for load factor design of foundations.