TAILIEUCHUNG - Maintenance Inspection and Rating

Maintenance Inspection and Rating Introduction Maintenance Documentation Fundamentals of Bridge Inspection Qualifications and Responsibilities of Bridge Inspectors • Frequency of Inspection • Tools for Inspection • Safety during Inspection • Reports of Inspection 49 Inspection Guidelines Timber Members • Concrete Members • Steel and Iron Members • Fracture-Critical Members • Scour-Critical Bridges • Underwater Components • Decks • Joint Seals • Bearings Fundamentals of Bridge Rating Introduction • Rating Principles • Rating Philosophies • Level of Ratings • Structural Failure Modes. | Vinayagamoorthy M. Maintenence Inspection and Rating. Bridge Engineering Handbook. Ed. Wai-Fah Chen and Lian Duan Boca Raton CRC Press 2000 49 Maintenance Inspection and Rating Murugesu Vinayagamoorthy California Department of Transportation Introduction Maintenance Documentation Fundamentals of Bridge Inspection Qualifications and Responsibilities of Bridge Inspectors Frequency of Inspection Tools for Inspection Safety during Inspection Reports of Inspection Inspection Guidelines Timber Members Concrete Members Steel and Iron Members Fracture-Critical Members Scour-Critical Bridges Underwater Components Decks Joint Seals Bearings Fundamentals of Bridge Rating Introduction Rating Principles Rating Philosophies Level of Ratings Structural Failure Modes Superstructure Rating Examples Simply Supported Timber Bridge Simply Supported T-Beam Concrete Bridge Two-Span Continuous Steel Girder Bridge Two-Span Continuous Prestressed Precast Box Beam Bridge Bridges without Plans Posting of Bridges Introduction Before the 1960s little emphasis was given to inspection and maintenance of bridges in the United States. After the 1967 tragic collapse of the Silver Bridge at Point Pleasant in West Virginia national interest in the inspection and maintenance rose considerably. The . Congress passed the Federal Highway Act of 1968 which resulted in the establishment of the National Bridge Inspection Standard NBIS . The NBIS sets the national policy regarding bridge inspection procedure inspection frequency inspector qualifications reporting format and rating procedures. In addition to the establishment of NBIS three manuals FHWA Bridge Inspector s Training Manual 70 1 AASHO Manual for Maintenance Inspection of Bridges 2 and FHWA Recording and Coding Guide for the Structure Inventory and Appraisal of the Nation s Bridges 3 have been developed and 2000 by CRC Press LLC updated 4-10 since the 1970s. These manuals along with the NBIS provide .

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