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Basis of Design Technical Criteria for Concept & Preliminary Engineering

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Basis of Design Technical Criteria for Concept & Preliminary Engineering February 24, 2015 Basis of Design Technical Criteria for Concept & Preliminary Engineering Final Report APPROVALS This document was developed by the Virginia Department of Rail and Public Transportation (DRPT) with significant input and general concurrence from the following major stakeholders: Federal Railroad Administration (FRA); Virginia Department of Transportation (VDOT); CSX Transportation (CSXT); Amtrak; and the Virginia Railway Express (VRE). The basis of design (BOD) was developed using an iterative process with formal reviews and comments provided by the major stakeholders with responses by DRPT until general concurrence was achieved with FRA, VDOT, CSXT, Amtrak and VRE. This basis of design shall be used by all members of the DRPT and its consultants and contractors for the development of an EIS and preliminary engineering for the Washington, D.C. to Richmond Southeast High Speed Rail project (DC2RVA). The purpose of the document is to provide a basis of design for the development of conceptual alternatives for evaluation in the EIS study and preliminary engineering for the preferred alternative only. It is anticipated that the DC2RVA project will be constructed in the future in a series of incrementally phased design-bid-build or design-build packages. Final design and detailed engineering would be provided in the future prior to the construction of each package in accordance with the requirements of applicable design codes, laws, and major stakeholder requirements at the time the phased projects are implemented. Packages in the corridor may be constructed concurrently or in later years depending on funding availability. D.C. to Richmond Southeast High Speed Rail i Basis of Design Report TABLE OF CONTENTS APPROVALS ............................................................................................................................................... i TABLE OF CONTENTS ............................................................................................................................ ii EXECUTIVE OVERVIEW ..................................................................................................................... E-1 1. PROJECT OVERVIEW .............................................................................................................. 1-1 1.1 Project Description ..................................................................................................................... 1-1 1.2 Project Location .......................................................................................................................... 1-2 1.3 Project Approach ........................................................................................................................ 1-5 1.4 Planning Considerations ........................................................................................................... 1-6 1.4.1 Operations and Service Planning .............................................................................. 1-6 1.4.2 Community Considerations ....................................................................................... 1-7 1.4.3 Environmental Considerations.................................................................................. 1-7 1.4.4 Standardization of Equipment and Materials ......................................................... 1-7 2. RAILWAY ................................................................................................................................... 2-1 2.1 Safety ............................................................................................................................................ 2-1 2.2 Definitions ................................................................................................................................... 2-1 2.3 Design Codes, Manuals, Standards, Specifications, and Regulatory Requirements ........ 2-2 2.4 Design Life .................................................................................................................................. 2-3 2.5 Design Loading .......................................................................................................................... 2-4 2.6 Design Speeds ............................................................................................................................. 2-4 2.7 Horizontal Geometry ................................................................................................................. 2-4 2.7.1 Track Centers ............................................................................................................... 2-6 2.7.2 Tangent Alignment ..................................................................................................... 2-7 2.7.3 Horizontal Curve Alignment ..................................................................................... 2-8 2.7.3.1 Superelevation ............................................................................................. 2-8 2.7.3.2 Circular Curves ......................................................................................... 2-10 2.7.3.3 Spiral Transition Curves .......................................................................... 2-11 2.7.3.4 Concentric Circular Curves ..................................................................... 2-13 D.C. to Richmond Southeast High Speed Rail ii Basis of Design Report TABLE OF CONTENTS 2.8 Vertical Geometry .................................................................................................................... 2-13 2.8.1 Grades ......................................................................................................................... 2-14 2.8.2 Vertical Curvature ..................................................................................................... 2-14 2.9 Clearances ................................................................................................................................. 2-17 2.9.1 Bridges ........................................................................................................................ 2-17 2.9.2 Station Platforms ....................................................................................................... 2-18 2.10 Roadbed Section ....................................................................................................................... 2-18 2.10.1 Ballast Depth .............................................................................................................. 2-18 2.10.2 Subballast Depth ....................................................................................................... 2-18 2.10.3 Shoulder Width ......................................................................................................... 2-18 2.11 Special Trackwork .................................................................................................................... 2-18 2.11.1 Turnouts and Crossovers ......................................................................................... 2-18 2.11.2 Speeds through Turnouts and Crossovers ............................................................ 2-19 2.11.3 Standard Turnouts and Crossovers ........................................................................ 2-20 2.11.4 Non-Standard Turnouts and Crossovers ............................................................... 2-20 2.11.5 Frogs ............................................................................................................................ 2-20 2.11.6 Derails ......................................................................................................................... 2-21 2.11.7 Industry Access ......................................................................................................... 2-21 2.12 Track Gauge .............................................................................................................................. 2-21 2.13 Rail ............................................................................................................................................. 2-21 2.14 Rail Anchoring ......................................................................................................................... 2-22 2.15 Tie Plates ................................................................................................................................... 2-22 2.16 Ties ............................................................................................................................................. 2-22 2.16.1 Concrete Ties .............................................................................................................. 2-22 2.16.2 Timber Ties ................................................................................................................. 2-22 2.17 Signals and Communications ................................................................................................. 2-22 3. HIGHWAY .................................................................................................................................. 3-1 3.1 Definitions ................................................................................................................................... 3-1 3.2 Safety ............................................................................................................................................ 3-1 3.3 Criteria ........................................................................................................................................
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