Transcription of Load Rating Guide - maine.gov
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load Rating Guide April 2015 1 TABLE OF CONTENTS SECTION 1 INTRODUCTION AND GENERAL OVERVIEW INTRODUCTION .. 1 PURPOSE OF THIS DOCUMENT .. 1 SECTION 2 GENERAL load Rating REQUIREMENTS NEW OR RECONSTRUCTED BRIDGES .. 2 EXISTING BRIDGES .. 3 QUALIFICATIONS AND RESPONSIBILITIES .. 3 ELEMENTS TO BE load RATED .. 4 load Rating COMPLEXITY .. 5 ANALYSIS TOOLS .. 5 BRIDGES WITH UNKNOWN PARAMETERS .. 6 REPORTING LRFR TO THE NBI .. 6 TIMBER BRIDGES .. 6 CURVED STEEL GIRDERS .. 6 BURIED STRUCTURES .. 6 RAILROAD BRIDGES .. 7 SECTION 3 load AND RESISTANCE FACTOR Rating GUIDELINES DATA COLLECTION FOR LRFR load Rating .. 8 DYNAMIC load ALLOWANCE (IM) .. 9 LIVE LOADS .. 9 DEAD LOADS .. 14 RESISTANCE FACTORS AND RESISTANCE MODIFIERS .. 14 STRENGTH LIMIT STATES FOR load Rating .
Highway Officials (AASHTO) Manual for Bridge Evaluation, 2nd Edition, 2011 with Interim Revisions, hereinafter referred to as the MBE, and the MaineDOT Bridge Design Guide, 2003 with Updates. These documents provide guidance to load rating engineers for ... Load Rating Engineer who seals the calculations and report.
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