TRB¿s National Cooperative Highway Research Program (NCHRP) Report 604: Heat-Straightening Repair of Damaged Steel Bridge Girders: Fatigue and Fracture Performance explores limits, based on fatigue and fracture performance, on the number of damage and repair cycles to which damaged steel bridge girders may be subjected using the heat-straightening procedure.

Introductory technical guidance for civil engineers, bridge engineers, structural engineers and construction managers interested in engineering for maintenance and repair of steel bridges. Here is what is discussed: Preventive Maintenance for Corrosion 1. INTRODUCTION 2. STRUCTURAL STEEL Repair and Strengthen 3. GENERAL REPAIR 4. CONNECTIONS 5. REPAIR OF STRUCTURAL MEMBERS Member Replacement 6. TENSION MEMBERS 7. COMPRESSION MEMBERS/COLUMNS 8. BEAMS Upgrade Steel Bridges 9. CREATION OF A COMPOSITE ACTION 10. POSTTENSIONING 11. TRUSS SYSTEMS

"This book emphasizes the physical and practical aspects of fatigue and fracture. It covers mechanical properties of materials, differences between ductile and brittle fractures, fracture mechanics, the basics of fatigue, structural joints, high temperature failures, wear, environmentally-induced failures, and steps in the failure analysis process."--publishers website.

This manual is a synthesis of published literature as well as the collective experience gathered from participants of a workshop held at Lehigh University August 14-15, 2002 [herein referred to as the Fatigue Workshop]. It presents what are the consensus best practices for repair and retrofit of fatigue cracks in steel bridges as of 2010. The manual is also a guide for owners and consulting engineers to use for design and detailing of repairs and retrofits for fatigue cracks. It should be used in conjunction with existing specifications, codes, and engineering judgment. In addition to designing and executing the repairs and/or retrofits, there are numerous other steps involved in the inspection and assessment of a cracked bridge member. Detailed discussion of inspection and fatigue and fracture assessment are beyond the scope of this manual and, therefore, are only briefly discussed below with reference to other documents.