BRIDGE RATING THROUGH NONDESTRUCTIVE LOAD TESTING - TECHNICAL REPORT: SUPPLEMENT TO NCHRP RESEARCH RESULTS DIGEST NO. 234

Abstract

This technical report presents detailed data on two major technical areas: evaluating unintended composite action and establishing target proof load levels. The report is presented in three chapters. Chapter 1 provides an introduction. Chapter 2, Evaluating Composite Action in Slab-on-Girder Bridges without Mechanical Shear Connection by Baidar Bakht, explores systematically the composite action in a slab and girder combination without mechanical shear connection and presents a procedure for extrapolating the results of diagnostic tests to give a bridge rating. Chapter 3, Derivation of Proof Loading Factors by Fred Moses, presents the basis for the recommended proof loading factors as outlined in Chapter 7 of the Manual for Bridge Rating Through Load Testing (NCHRP Research Results Digest No. 234).