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Chapter 38 Railroad Structures

WisDOT Bridge Manual Chapter 38 Railroad Structures January 2017 38-1 Table of Contents Introduction .. 3 Design Specifications and Design Aids .. 4 Specifications .. 4 Design Aids .. 4 Horizontally Curved Structures .. 4 Railroad Approval of Plans .. 5 Design Considerations .. 6 Superstructure .. 6 Methods of Design, Selection Type and Superstructure General .. 6 Ballast Floor .. 9 Dead Load .. 9 Live Load .. 10 Live Load Distribution .. 10 Stability .. 12 Live Load Impact .. 12 Centrifugal Forces on Railroad Structures .. 14 Lateral Forces From Equipment .. 14 Longitudinal Forces on Railroad Structures .. 15 Wind Loading on Railroad Structures .. 15 Loads from Continuous Welded Rails .. 16 Fatigue Stresses on Structures .. 16 Live Load Deflection .. 17 Loading Combinations on Railroad Structures .

The floor under the ballast may be steel plate or reinforced concrete and the substructures could be reinforced concrete or structural steel as conditions warrant. The AREMA Manual covers all phases of railway design, construction, maintenance and operation. It is divided into sections and chapters. Chapter 8, Concrete Structures and

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