These recommendations are intended for routine use and might not provide sufficient criteria for infrequently encountered conditions. The recommendations contained herein are based upon past successful usage, advances in the state of knowledge, and current design and maintenance practices. This chapter is presented as a consensus document by a committee composed of railroad industry professionals having substantial and broad-based experience designing, evaluating, and investigating Concrete Structures and Foundations used by railroads. Additional special provisions for speeds higher than those listed above may be added by the Engineer as necessary. Speeds of freight trains up to 80 mph and passenger trains up to 90 mph. Normal North American passenger and freight equipment, and.The material in this chapter is written with regard to typical North American Railroad Concrete Structures and Foundations and other structures mentioned herein with CHAPTER 8 CONCRETE STRUCTURES AND FOUNDATIONS1 FOREWORD
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