Contents EXECUTIVE SUMMARY ............................................................................................................. 1 1.0 BACKGROUND ............................................................................................................... 8 1.1 Purpose ..................................................................................................................... 8 1.2 Alignment with Other Initiatives ................................................................................. 8 1.3 Project Team ............................................................................................................. 9 City of Toronto.................................................................................................. 9 Build Toronto.................................................................................................... 9 WSP Canada Group Limited............................................................................ 9 2.0 STUDY METHODOLOGY.............................................................................................. 10 2.1 Study Area............................................................................................................... 10 2.2 Data Gathering ........................................................................................................ 10 3.0 EXISTING CONDITIONS............................................................................................... 12 3.1 Topography & Landforms........................................................................................ 12 3.2 Geotechnical & Hydrogeological ............................................................................. 13 3.3 Archaeological Considerations................................................................................ 14 Existing Site Conditions & Identified Archaeological Potential....................... 14 4.0 RAIL CORRIDOR CONSIDERATIONS ......................................................................... 16 4.1 Existing Rail Infrastructure & Services .................................................................... 16 Existing Rail Service ...................................................................................... 17 4.2 Capital Works in the Rail Corridor ........................................................................... 18 Signalling Systems Upgrades ........................................................................ 19 Switch Machine Replacement........................................................................ 19 Corridor Electrification.................................................................................... 19 Track Clearances ........................................................................................... 21 Electromagnetic Fields................................................................................... 21 4.3 North Bathurst Storage Yard ................................................................................... 22 4.4 Planned Spadina-Front GO Station......................................................................... 22 5.0 REFERENCE DESIGN CONCEPT................................................................................ 24 Build Toronto i Rail Deck Park ~ Engineering and Costing Study 5.1 General Approach ................................................................................................... 24 5.2 Presentation of Design Concept.............................................................................. 25 Conceptual Layout Plans ............................................................................... 25 Analytical Area Summary Plans..................................................................... 26 Cross Sections ............................................................................................... 26 3-Dimensional Model(s) ................................................................................. 26 5.3 Major Considerations for the Design Concept......................................................... 27 5.4 Foundations............................................................................................................. 27 Foundation Types .......................................................................................... 28 Hydrogeological Considerations .................................................................... 29 5.5 Structural Design..................................................................................................... 29 Spans & Structural Systems .......................................................................... 29 Above-Deck Design Assumptions & Loads.................................................... 31 5.6 Utilities..................................................................................................................... 31 Stormwater Management............................................................................... 31 Watermains .................................................................................................... 32 Sanitary Sewers ............................................................................................. 33 Toronto Hydro ................................................................................................ 33 Telecommunications ...................................................................................... 33 5.7 Topographic Integration .......................................................................................... 33 5.8 Noise & Vibration..................................................................................................... 35 5.9 Below-Deck Safety Systems ................................................................................... 36 General & Emergency Lighting Systems ....................................................... 36 Air Quality & Ventilation Systems................................................................... 37 Emergency Access & Egress......................................................................... 38 Other Emergency Systems ............................................................................ 38 6.0 AUTHORITIES HAVING JURISDICTION & APPROVALS............................................ 40 6.1 General Municipal Approvals & Permits.................................................................. 40 6.2 General Provincial Approvals & Permits.................................................................. 40 6.3 Rail Corridor Access, Work, & Safety Requirements .............................................. 40 6.4 Federal Approvals & Permits................................................................................... 42 ii 6.5 Environmental Assessment..................................................................................... 42 7.0 BUILDING RAIL DECK PARK ....................................................................................... 44 7.1 Construction Steps .................................................................................................. 44 Early Works.................................................................................................... 44 Foundations ................................................................................................... 45 Primary Structures ......................................................................................... 45 Secondary Structures..................................................................................... 45 Systems ......................................................................................................... 46 Decking .......................................................................................................... 46 Park Development.......................................................................................... 46 7.2 Construction Methodology....................................................................................... 47 Construction Islands....................................................................................... 48 Staging Areas................................................................................................. 50 7.3 Phasing ................................................................................................................... 51 8.0 COST ESTIMATES........................................................................................................ 52 8.1 Notes & Assumptions .............................................................................................. 53 8.2 Cost Categories....................................................................................................... 53 Hard Costs ..................................................................................................... 53 Construction Management Fee...................................................................... 53 General Requirements ................................................................................... 53 Work Restrictions ........................................................................................... 54 Contingencies & Allowances.......................................................................... 54 8.3 Exclusions ............................................................................................................... 55 9.0 PROJECT RISKS........................................................................................................... 56 Appendix A | Analytical