Forth Replacement Crossing: Main Crossing (Bridge) Scheme Assessment Report Development of Options
Report on Scheme Development
January to August 2008
This document is also available in pdf format (2.6mb)
Contents
Bibliography and Workstream Timeline
1 Introduction
1.1 FRCS Reference Design
1.2 Development of Scheme Options
2 Description of Scheme Options
2.1 Functional Cross Section
2.2 General Arrangements
2.3 Deck Type
2.4 Tower Forms
2.5 Approach Bridge Type
2.6 Foundations
3 Key Issues and Assumptions
3.1 Key Issues
3.2 Consideration of longer main spans
3.3 Stay Cables
3.4 Ship Impact
3.5 Other Issues
4 Assessment of Functional Cross Section Options
4.1 General considerations
4.2 Assessment of options
4.3 Three Corridor Option Connectivity
4.4 Double Level Option Connectivity
4.5 Comparison
5 Assessment of Deck Type Options
5.1 Three corridor options
5.2 Double deck options
6 Assessment of Tower Options
6.1 General
6.2 Three Corridor Options
6.3 Double Level Options
6.4 Assessment of Options
7 Assessment of Options for Approach Spans
7.1 Three Corridor Deck Options
7.2 Double Level Deck Options
7.3 Pier Forms
8 Assessment of Foundation Options
8.1 Site Conditions
8.2 Foundation Options
8.3 Central Tower Foundations
8.4 Flanking Tower Foundations
8.5 Side Span Foundations
8.6 Approach Span Foundations
9 Options for Construction Methods
9.1 Cable Stayed Spans
9.2 Approach Viaducts
9.3 Foundations
9.4 Construction Programme
10 Durability, Inspection and Maintenance
10.1 Durability
10.2 Inspection & Maintenance
10.3 WASHMS
11 Preliminary Consideration of Assessment of Anticipated Departures From Standard
11.1 Functional Cross Section
11.2 Post-tensioned grouted ducts
12 Conclusions and Recommendations
12.1 Cost Comparison
12.2 Sustainability Comparison
12.3 Recommended Options for Further Development
Appendix A - Reference Design Drawings
Appendix B - Main Crossing Scheme Assessment Drawings
Appendix C - Main Crossing Scheme Assessment Architectural Figures
Appendix D - Central Tower Stability
Appendix E - Schematic Multi-Modal Alignments
Appendix F - Main Crossing Construction Programmes
No part of this report may be copied or reproduced by any means without prior written permission from Jacobs Arup – Jacobs UK Limited and Ove Arup & Partners International Limited Consortium. If you have received this report in error, please destroy all copies in your possession or control and notify Jacobs Arup.
This report has been prepared for the exclusive use of the commissioning party and unless otherwise agreed in writing by Jacobs Arup, no other party may use, make use of or rely on the contents of this report. No liability is accepted by Jacobs Arup for any use of this report, other than for the purposes for which it was originally prepared and provided.
Opinions and information provided in the report are on the basis of Jacobs Arup using due skill, care and diligence in the preparation of the same and no warranty is provided as to their accuracy.
It should be noted and it is expressly stated that no independent verification of any of the documents or information supplied to Jacobs Arup has been made.