DC Streetcar Design Criteria January 2012 DC STREETCAR DESIGN CRITERIA January 2012 Terry Bellamy | DDOT Director Ronaldo Nicholson, PE | Chief Engineer Angel A. Pena Project Manager | Civil Engineer Progressive Transportation Services Administration 55 M Street SE, Suite 500 Washington DC 20003 www.ddot.dc.gov MESSAGE FROM DDOT DIRECTOR AND CHIEF ENGINEER We are very pleased to announce the completion of the DC Streetcar Design Criteria. This manual marks a significant milestone for the District Department of Transportation as we prepare to restore streetcar service to the District. The DC Streetcar Design Criteria will provide both general guidelines and specific criteria for the planning, design and construction of the proposed streetcar system. We are confident that the use of this manual will enable DDOT, agencies, consultants, planners, engineers and other professionals to more efficiently translate DC requirements into acceptable design solutions. Implementing a successful streetcar system that will serve the District of Columbia is our key goal. With the development of this Design Criteria and Standard Drawings we have taken a very important step towards this direction. Terry Bellamy Ronaldo Nicholson, PE DDOT Director Chief Engineer FOREWORD The DC Streetcar Design Criteria is the first comprehensive document that provides a general framework and the basis for a uniform design for the proposed DC streetcar system. These criteria will allow the city’s project team and partners to develop preliminary and final designs for any streetcar project that might be undertaken by the District Department of Transportation. These guidelines are not intended to replace the level of initiative and competence expected from DDOT, agencies, consultants, and professionals in the performance of their duties. It is not a substitute for engineering judgment and sound engineering practice. Professionals involved in the DC streetcar program are encouraged to carefully consider the principles of the Design Criteria in the context of the needs of individual projects. Exceptions may apply in special cases. If a guideline is not appropriate and that a more appropriate solution is available, suggestions to this effect should be raised for consideration by DDOT. The DC Streetcar Design Criteria should be viewed as a ”living document,” which is subject to change or revisions as we continue to work towards our goal to implement a successful extensive streetcar system in the city. A strong foundation is needed that provides guidance to achieving this goal. The completion of this Design Criteria is one the steps towards achieving this foundation. Angel A. Pena Project Manager | Civil Engineer Progressive Transportation Services Administration ACKNOWLEDGEMENTS The Design Criteria for DC Streetcar was prepared under the guidance of the District Department of Transportation Technical Working Group with the assistance of HDR Engineering Inc. in association with ZGF Architects LLP, LTK Engineering Services, and Legion Design. Many Thanks to the people who helped make this document possible: DDOT Technical Working Group: Office of the Director: Infrastructure Project Management Administration (IPMA): Terry Bellamy/ Director Ronaldo Nicholson, PE/ Chief Engineer • Sandy Castor • Muhammed.Khalid • Monica Hernandez • Ali Shakeri • Ronald Garraffa Progressive Transportation Services Administration (PTSA): Traffic Operation Services Administration (TOA): Aaron Overman, PE/ Acting Associate Director Dr. Gloria Jeff/ Associate Director • Angel A. Pena • Marti Reinfeld • James Cheeks • Wasim Raja • Eric Madison • Ralph Burns • Lamont Hinton • Levon Petrosian • William Handsfield Policy, Planning and Sustainability Administration (PPSA): Urban Forestry Administration (UFA): Sam Zimbabwe/ Associate Director John P. Thomas/ Associate Director • Maurice Keys • Gabe Onyeador • Earl Eutsler • Reginald Bazile • Alice Kelly • Sharon Dendy • Jim Sebastian • David Krulewitch Public Space Operations Project (PSOP): Jeff Powell/ Acting Associate Director • Juan Amaya • Matthew Marco HDR Engineering Inc: • Kevin LaGreca ZGF Architects LLP: • Otto Condon LTK Engineering Services: • Mike Collins Legion Design: • Jason Casey The District Department of Transportation wishes to acknowledge the following government agencies and private sector companies from the interested parties group for their input and feedback in the content of this document: Interested Parties Group: • District Department of the Environment (DDOE) • Arlington County, Virginia • PEPCO • VERIZON • SPRINT/NEXTEL Table of Contents 1.0 General 1.1. Purpose and Scope 1.2. Climate/Environmental Conditions 1.3. System Technology Description 1.4. Application 1.5. Codes and Standards 1.6. Project Goals 2.0 Operations 2.1 General 2.2 Operations 2.3 Equipment and Facilities 2.4 Fare Collection and Enforcement 2.5 Supervisory Control 2.6 Safety and Security 3.0 Track Alignment and Vehicle Clearance 3.1 Track Alignment 3.2 Clearance Requirements 4.0 Urban Design - Streetcar Stops 4.1 Preferred Siting Criteria 4.2 Streetcar Platforms 4.3 Streetcar Platform Design Parameters 4.4 Streetcar Platform Amenities 4.5 Integration of Public Art 5.0 Civil Work 5.1 Survey Control System 5.2 Drainage 5.3 Right-of-Way 5.4 Roadways 5.5 Grading DC Streetcar Design Criteria Manual | Table of Contents vi 6.0 Urban Design - Potential R.O.W. and Alignment Improvements 6.1 Goals and Criteria for Integrating Related Improvements 6.2 Streetscape and Low Impact Development Strategies 6.3 Trackway Design Goals 6.4 Infrastructure 7.0 Utilities 7.1 Preconstruction 7.2 Gas Lines 7.3 Sanitary, Storm and Water 7.4 Electrical Power Facilities 7.5 Telephone, Fiber Optic, Long Distance and Cable TV Facilities 7.6 Street Lights and Traffic Signals 7.7 Parking Meters and Pay & Display Kiosks 7.8 Vaults and Basement Encroachments 7.9 Overhead Utility Lines 7.10 Utility Design Drawings 7.11 Temporary Support of Track Slab for Utility Maintenance and Replacement 8.0 Traffic 8.1 Applicable Codes 8.2 General Design Criteria 8.3 Control of Streetcar Interface with Traffic 8.4 Sign Design 8.5 Pavement Marking Design 8.6 General Operations 8.7 Traffic Control through Work Zones 9.0 Trackwork 9.1 Trackway 9.2 Trackwork 9.3 Electrical Insulation 9.4 Special Trackwork 10.0 Structural 10.1 General 10.2 Applicable Codes and Standards 10.3 Loads and Forces DC Streetcar Design Criteria Manual | Table of Contents vii 10.4 Soils 10.5 Reinforced and Prestressed Concrete 10.6 Structural Steel 10.7 Foundations 10.8 Support of Excavation Structures 10.9 Streetcar Tracks on Bridges 11.0 Vehicles 11.1 Vehicle Type 11.2 Handicapped Accessibility 11.3 Operating Environment 11.4 Traction Power Supply Voltages 11.5 Vehicle Weight and Passenger Loadings 11.6 Vehicle Dimensions 11.7 Vehicle Performance 11.8 Vehicle Noise 11.9 Vehicle Vibration 11.10 Electromagnetic Interference & Compatibility 12.0 Maintenance and Storage Facility 12.1 General 12.2 Applicable Codes and Standards 12.3 Materials of Construction 12.4 Structural 12.5 Facility Vehicle Interface 12.6 Corrosion Control and Safety Grounding 12.7 Acoustics 12.8 Maintenance 12.9 Mechanical Systems 12.10 Access for the Mobility Impaired 12.11 Functional Requirements 12.12 Site Selection 12.13 Storage Yard 12.14 Interior Cleaning Area 12.15 Automobile Parking and On-site Roads 12.16 Outside Storage Areas 12.17 Fire Protection System 12.18 Yard Lighting 12.19 Security 12.20 Refuse/Recycling Collection 12.21 Landscaping DC Streetcar Design Criteria Manual | Table of Contents viii 12.22 Streetcar Shop Layout 12.23 Shop Functional Areas 12.24 Support Areas for Shops 12.25 Central Maintenance, Operations and Administrative Areas 12.26 Exterior Streetcar Wash Facility 12.27 Electrical Services 13.0 Traction Power Supply & Distribution 13.1 General 13.2 Requirements 13.3 Traction Power Substations 13.4 DC Feeder System 13.5 Overhead Contact System 13.6 Negative Return Path and Stray Current Control 14.0 Stray Current and Corrosion Control 14.1 Purpose 14.2 Scope 14.3 Interfaces 14.4 Applicability of Criteria 14.5 Expansion Capability 14.6 Standards and Codes 14.7 Special Design Provisions 14.8 Stray Current Corrosion Prevention 14.9 Stray Current Corrosion Prevention Systems 14.10 Soil Corrosion Control (Buried Structures) 14.11 Soil Corrosion Prevention Systems 14.12 Atmospheric Corrosion Prevention 14.13 Atmospheric Corrosion Prevention Systems 14.14 Grounding 14.15 Design and Coordination of Grounding Systems 15.0 Signal and Route Control 15.1 General 15.2 Applicable Codes and Standards 15.3 Functional Design Requirements 15.4 Operational Design Requirements 15.5 Electromagnetic Interference 15.6 Growth and Expansion 15.7 Switch Machines 15.8 Traffic Signal Interface and Streetcar Signals DC Streetcar Design Criteria Manual | Table of Contents ix 16.0 Communications 16.1 General 16.2 Supervisory Control and Data Acquisition 16.3 Station Platforms 16.4 Vehicles 16.5 Traction Power Substations 17.0 Fare Collection 17.1 Fare Collection Equipment 17.2 Fare Structure 17.3 Fare Enforcement DC Streetcar Design Criteria Manual | Table of Contents x Chapter 1 General Content 1.1. Purpose and Scope 1.2. Climate/Environmental Conditions 1.3. System Technology Description 1.4. Application 1.5. Codes and Standards 1.6. Project Goals 1.0 General 1.1. Purpose and Scope The purpose of the design criteria is to establish the standards and design policies for the preliminary engineering and final design phases for the DC Streetcar Program. The material