Railroad Design and Rehabilitation
Railroad Design and Rehabilitation
Unified Facilities Criteria (UFC) - ufc_4_860_01fa0002
Foreword - ufc_4_860_01fa0003
Technical Instructions - ufc_4_860_01fa0005
Foreword - ufc_4_860_01fa0006
Tables - ufc_4_860_01fa0012
Tables - Cont'd - ufc_4_860_01fa0013
chapter 1 General - ufc_4_860_01fa0014
Supplementary Material
Source of Assistance
Chapter 2 Determining Traffic and load Carrying Requirements
Table 2-1. Common Cargo Types and Loading Requirements
Figure 2-1. Common Freight Cars
Table 2-2. Common Car Types and Design Wheel Loads
locomotive Tractive Effort.
chapter 3 Establishing route Profile and Alignment Specifications
Table 3-2. Recommended Minimum Grade Lengths
Figure 3-1. Combining Curves
Table 3-4. Curve Compensation for a 1 Percent Grade
Table 3-5. Estimating Locomotive Tractive Effort
Table 3-6. Design Gross Car Weights
Chapter 4 Route Selection
Establishing Control points and Pontential Corridors
Initial Survey
Trial Location
Final Location
Chapter 5 Rehabilitation: Track, Bridges, and Terminals
Figure 5-1. Example Turnout Inspection Information
Structural Evaluation
Operational Evaluation
Description of Track, Bridges, and Facilities
Final Plans and Specifications.
Construction and On-Site Inspection
Chapter 6 Track and Roadway Design
Figure 6-3. Typical Cross Section - Curved Track
Figure 6-4. Typical Cross Section With Sub-ballast Layer - Curved Track
Figure 6-6. Typical Cross Section - Track with Geotextile
Table 6-1. Recommended Transition Rates Between Grades
Horizontal Curves
Table 6-2. Design Super-elevation for Curved Track
Clearances - ufc_4_860_01fa0047
Figure 6-8. Clearance Diagram for Tangent Track
Table 6-4. Clearance increases Adjacent to Curved Track
Table 6-5. Track Center Distances
Figure 6-10. Example Load Distribution along the Track
Figure 6-11. Example Vertical Pressure Reduction through the Track
Figure 6-12. Maximum Track Deflection and Long-Term Track Performance.
Design Load and Wheel Spacing
Figure 6-13. Design Wheel Configurations
Table 6-7. Rail Sections
Ties and Tie Spacing - ufc_4_860_01fa0057
Ballast and Subgrade
Subgrade
Figure 6-14. General Method for Determining the Frost Susceptibility of Soils
Figure 6-15. Design Air Freezing indexes in North America
Figure 6-16. Air Freezing index/Surface Cover/Frost
Drainage - ufc_4_860_01fa0063
Figure 6-17. Required Subdrainage where Open Side Ditches
Figure 6-18. Geotextile Installation under a Turnout
Figure 6-19. Geotextile Installation at a Bridge Abutment
Table 6-8. Recommended Ballast Gradations
Ties and Tie Spacing - ufc_4_860_01fa0068
Cross-Section and Length
Table 6-9. Switch Ties for Standard Turnouts
Figure 6-20. Anti-Splitting Devices for Tie Ends
Table 6-10. Dimension and Surface Specifications for Relay
Lightweight Rail
Other Track Material
Figure 6-21. Tie Plates
Table 6-11. Common Joint Bolt Diameters
Figure 6-22. Recommended Minimum Rail Anchor Application
Figure 6-23. Rail Anchors
Figure 6-24. Rail Anchor Applications at Open Deck Bridges
Figure 6-25. General Arrangement of Turnouts and Crossovers
Figure 6-26. Parts of a Turnout
Figure 6-27. Determining Frog Number (Turnout Size)
Switches and Switch Points
Stock Rails and Closure Rails
Figure 6-28. Turnout Design
Track Connections and Ladder Tracks
Figure 6-29. Diverging Route Connection
Figure 6-30. Parallel Siding Connection
Figure 6-31. Ladder Track Layout
Figure 6-32. Location of Derails
Bonded and Grounded Track
Track Scales - ufc_4_860_01fa0092
Chapter 7 Road Crossing and bridges
Table 7-1. Recommended Crossing Surfaces
Prefabricated Surfaces
Figure 7-1. Typical Type 1 Gravel Crossing with Timber Flangeway Header
Figure 7-2. Typical Type 2 Timber Crossing
Figure 7-3. Typical Type 3A Asphalt Crossing
Figure 7-4. Typical Type 3B Asphalt Crossing with Timber Flangeway Header
Figure 7-5. Typical Type 3C 4-Rail Asphalt Crossing
Figure 7-6. Typical Type 3D 6-Rail Asphalt Crossing
Figure 7-7. Typical Type 4A Cast-in-Place Concrete Crossing
Figure 7-8. Typical Type 4B Prefabricated Concrete Panel Crossing
Figure 7-10. Typical Type 5 Full Depth Rubber Crossing.
Figure 7-11. Rubber Flangeway Fillers
Type 2 Timber Crossing
Type 4B Prefabricated Concrete Panel Crossing
Figure 7-12. Lagless Concrete Panel Crossing
Figure 7-14. Typical Drainage at Road Crossings.
Figure 7-15. Recommended Track Construction for Road Crossings
Figure 7-16. Recommended Crossing Road Approach Profile
Figure 7-17. Clear Crossing Visibility Area for Approaching Vehicles
Table 7-2. Clear Visibility Distance at Road Crossings
Bridges - ufc_4_860_01fa0114
Figure 7-19. Cooper Load Configuration for Bridges
Figure 7-20. Variation in Cooper E Value with Span Length
Table 7-3. Recommended Cooper Design Load for Bridges
Chapter 8 Terminals
Figure 8-1. Typical Small Yard with Storm Drainage
Clearances and Usable Track Lengtg
Figure 8-2. Vehicle Terminal
Staging Area
Figure 8-4. Concrete End Ramp
Figure 8-5. Portable Multilevel Ramp
Figure 8-6. Concrete Side Ramp.
Ammunition Terminals
Figure 8-7. Interchange Yard
Yard, Storage, and Other Auxiliary Tracks
Figure 8-8. Auxiliary Tracks
Miscellaneous Buildings
Security Fencing
Chapter 9 Construction
Track Construction
Ballast Unloading
Table 9-2. Rail Joint Gap.
Quality Control/Quality Assurance
Appendix A References - ufc_4_860_01fa0137
Appendix A References - Cont'd - ufc_4_860_01fa0138
Appendix B Ruling Grade - Example Problem
Appendix B Ruling Grade - Example Problem - Cont'd
Table B-1. Curve Compensation for a 1.16% Grade.
Appendix C Sample Track Rehabilitation Report
Summary
Summary - Cont'd
Contents - ufc_4_860_01fa0145
Contents - ufc_4_860_01fa0146
Introduction - ufc_4_860_01fa0148
Approach
Operational Evaluation
Description of Network and Track Condition
Table C-1. Key to Track Names and Station Locations
Plates/Fastenings
Ballast
Vegetation - ufc_4_860_01fa0155
Road Crossings
Bridges - ufc_4_860_01fa0157
Structural Analysis - ufc_4_860_01fa0158
Analysis of Major Deficiencies
Turnout Defects
Loose or Missing Track Fastenings
Vegetation In or Near the Track
Recommendations and Cost Estimates for Remedial Work
Phase 1
Remedial Actions
Restore Drainage - Cont'd - ufc_4_860_01fa0166
Restore Drainage - Cont'd - ufc_4_860_01fa0167
Table C-3. Road Crossing Repair/Rebuilding
Tie Replacement
Respace Ties
Restore Turnouts
Table C-4. Turnout Rehabilitation
Apply Rail Anchors
Table C-5. Ballast and Surfacing Locations
Surface Track/Reshape Ballast Section
Herbicide Application
Quality Control Inspection
Conclusions and Recommendations - ufc_4_860_01fa0178
Railroad Design and Rehabilitation
Unified Facilities Criteria (UFC) - ufc_4_860_01fa0002
Foreword - ufc_4_860_01fa0003
Technical Instructions - ufc_4_860_01fa0005
Foreword - ufc_4_860_01fa0006
Tables - ufc_4_860_01fa0012
Tables - Cont'd - ufc_4_860_01fa0013
chapter 1 General - ufc_4_860_01fa0014
Supplementary Material
Source of Assistance
Chapter 2 Determining Traffic and load Carrying Requirements
Table 2-1. Common Cargo Types and Loading Requirements
Figure 2-1. Common Freight Cars
Table 2-2. Common Car Types and Design Wheel Loads
locomotive Tractive Effort.
chapter 3 Establishing route Profile and Alignment Specifications
Table 3-2. Recommended Minimum Grade Lengths
Figure 3-1. Combining Curves
Table 3-4. Curve Compensation for a 1 Percent Grade
Table 3-5. Estimating Locomotive Tractive Effort
Table 3-6. Design Gross Car Weights
Chapter 4 Route Selection
Establishing Control points and Pontential Corridors
Initial Survey
Trial Location
Final Location
Chapter 5 Rehabilitation: Track, Bridges, and Terminals
Figure 5-1. Example Turnout Inspection Information
Structural Evaluation
Operational Evaluation
Description of Track, Bridges, and Facilities
Final Plans and Specifications.
Construction and On-Site Inspection
Chapter 6 Track and Roadway Design
Figure 6-3. Typical Cross Section - Curved Track
Figure 6-4. Typical Cross Section With Sub-ballast Layer - Curved Track
Figure 6-6. Typical Cross Section - Track with Geotextile
Table 6-1. Recommended Transition Rates Between Grades
Horizontal Curves
Table 6-2. Design Super-elevation for Curved Track
Clearances - ufc_4_860_01fa0047
Figure 6-8. Clearance Diagram for Tangent Track
Table 6-4. Clearance increases Adjacent to Curved Track
Table 6-5. Track Center Distances
Figure 6-10. Example Load Distribution along the Track
Figure 6-11. Example Vertical Pressure Reduction through the Track
Figure 6-12. Maximum Track Deflection and Long-Term Track Performance.
Design Load and Wheel Spacing
Figure 6-13. Design Wheel Configurations
Table 6-7. Rail Sections
Ties and Tie Spacing - ufc_4_860_01fa0057
Ballast and Subgrade
Subgrade
Figure 6-14. General Method for Determining the Frost Susceptibility of Soils
Figure 6-15. Design Air Freezing indexes in North America
Figure 6-16. Air Freezing index/Surface Cover/Frost
Drainage - ufc_4_860_01fa0063
Figure 6-17. Required Subdrainage where Open Side Ditches
Figure 6-18. Geotextile Installation under a Turnout
Figure 6-19. Geotextile Installation at a Bridge Abutment
Table 6-8. Recommended Ballast Gradations
Ties and Tie Spacing - ufc_4_860_01fa0068
Cross-Section and Length
Table 6-9. Switch Ties for Standard Turnouts
Figure 6-20. Anti-Splitting Devices for Tie Ends
Table 6-10. Dimension and Surface Specifications for Relay
Lightweight Rail
Other Track Material
Figure 6-21. Tie Plates
Table 6-11. Common Joint Bolt Diameters
Figure 6-22. Recommended Minimum Rail Anchor Application
Figure 6-23. Rail Anchors
Figure 6-24. Rail Anchor Applications at Open Deck Bridges
Figure 6-25. General Arrangement of Turnouts and Crossovers
Figure 6-26. Parts of a Turnout
Figure 6-27. Determining Frog Number (Turnout Size)
Switches and Switch Points
Stock Rails and Closure Rails
Figure 6-28. Turnout Design
Track Connections and Ladder Tracks
Figure 6-29. Diverging Route Connection
Figure 6-30. Parallel Siding Connection
Figure 6-31. Ladder Track Layout
Figure 6-32. Location of Derails
Bonded and Grounded Track
Track Scales - ufc_4_860_01fa0092
Chapter 7 Road Crossing and bridges
Table 7-1. Recommended Crossing Surfaces
Prefabricated Surfaces
Figure 7-1. Typical Type 1 Gravel Crossing with Timber Flangeway Header
Figure 7-2. Typical Type 2 Timber Crossing
Figure 7-3. Typical Type 3A Asphalt Crossing
Figure 7-4. Typical Type 3B Asphalt Crossing with Timber Flangeway Header
Figure 7-5. Typical Type 3C 4-Rail Asphalt Crossing
Figure 7-6. Typical Type 3D 6-Rail Asphalt Crossing
Figure 7-7. Typical Type 4A Cast-in-Place Concrete Crossing
Figure 7-8. Typical Type 4B Prefabricated Concrete Panel Crossing
Figure 7-10. Typical Type 5 Full Depth Rubber Crossing.
Figure 7-11. Rubber Flangeway Fillers
Type 2 Timber Crossing
Type 4B Prefabricated Concrete Panel Crossing
Figure 7-12. Lagless Concrete Panel Crossing
Figure 7-14. Typical Drainage at Road Crossings.
Figure 7-15. Recommended Track Construction for Road Crossings
Figure 7-16. Recommended Crossing Road Approach Profile
Figure 7-17. Clear Crossing Visibility Area for Approaching Vehicles
Table 7-2. Clear Visibility Distance at Road Crossings
Bridges - ufc_4_860_01fa0114
Figure 7-19. Cooper Load Configuration for Bridges
Figure 7-20. Variation in Cooper E Value with Span Length
Table 7-3. Recommended Cooper Design Load for Bridges
Chapter 8 Terminals
Figure 8-1. Typical Small Yard with Storm Drainage
Clearances and Usable Track Lengtg
Figure 8-2. Vehicle Terminal
Staging Area
Figure 8-4. Concrete End Ramp
Figure 8-5. Portable Multilevel Ramp
Figure 8-6. Concrete Side Ramp.
Ammunition Terminals
Figure 8-7. Interchange Yard
Yard, Storage, and Other Auxiliary Tracks
Figure 8-8. Auxiliary Tracks
Miscellaneous Buildings
Security Fencing
Chapter 9 Construction
Track Construction
Ballast Unloading
Table 9-2. Rail Joint Gap.
Quality Control/Quality Assurance
Appendix A References - ufc_4_860_01fa0137
Appendix A References - Cont'd - ufc_4_860_01fa0138
Appendix B Ruling Grade - Example Problem
Appendix B Ruling Grade - Example Problem - Cont'd
Table B-1. Curve Compensation for a 1.16% Grade.
Appendix C Sample Track Rehabilitation Report
Summary
Summary - Cont'd
Contents - ufc_4_860_01fa0145
Contents - ufc_4_860_01fa0146
Introduction - ufc_4_860_01fa0148
Approach
Operational Evaluation
Description of Network and Track Condition
Table C-1. Key to Track Names and Station Locations
Plates/Fastenings
Ballast
Vegetation - ufc_4_860_01fa0155
Road Crossings
Bridges - ufc_4_860_01fa0157
Structural Analysis - ufc_4_860_01fa0158
Analysis of Major Deficiencies
Turnout Defects
Loose or Missing Track Fastenings
Vegetation In or Near the Track
Recommendations and Cost Estimates for Remedial Work
Phase 1
Remedial Actions
Restore Drainage - Cont'd - ufc_4_860_01fa0166
Restore Drainage - Cont'd - ufc_4_860_01fa0167
Table C-3. Road Crossing Repair/Rebuilding
Tie Replacement
Respace Ties
Restore Turnouts
Table C-4. Turnout Rehabilitation
Apply Rail Anchors
Table C-5. Ballast and Surfacing Locations
Surface Track/Reshape Ballast Section
Herbicide Application
Quality Control Inspection
Conclusions and Recommendations - ufc_4_860_01fa0178
