SUPERSEDED Manual Design Criteria for Bridges and Other Structures August 2014 SUPERSEDED Copyright http://creativecommons.org/licenses/by/3.0/au/ © State of Queensland (Department of Transport and Main Roads) 2014 Feedback: Please send your feedback regarding this document to: [email protected] Design Criteria for Bridges and Other Structures, Transport and Main Roads, August 2014 Amendment Register Issue/ Reference Description of revision Authorised by Date Rev no. section 1 N/A Initial release DCE (Structures) June 2012 2 N/A Content update DCE (Structures) June 2013 3 1.3.6 Asbestos management and DCE (Structures) April 2014 removal content update 4 N/A Content update, inclusion of DCE (Structures) August 2014 FRPC design criteria and other updates SUPERSEDED Design Criteria for Bridges and Other Structures, Transport and Main Roads, August 2014 i Contents 1 Design requirements for bridges ................................................................................................. 1 1.1 Reference documents ..................................................................................................................... 1 1.2 Bridges – scope .............................................................................................................................. 2 1.2.1 Standard bridges ............................................................................................................ 2 1.3 Stage construction and provision for future widening ..................................................................... 5 1.3.1 Future widening .............................................................................................................. 5 1.3.2 Stage construction .......................................................................................................... 5 1.3.3 Widening an existing bridge ........................................................................................... 5 1.3.4 Widening two bridges on separate carriageways ........................................................... 6 1.3.5 Estimating residual life of existing bridge ....................................................................... 6 1.3.6 Working with asbestos in bridge rehabilitation works ..................................................... 7 1.4 Quality assurance in design documentation ................................................................................... 8 1.4.1 Structural design objectives ........................................................................................... 8 1.4.2 Conforming product, alternative product and innovation................................................ 9 1.4.3 Review of drawings and scheme documents ................................................................. 9 1.5 Bridge design report ..................................................................................................................... 10 1.5.1 Phases of report ........................................................................................................... 10 1.5.2 Fixing report – bridge location determined ................................................................... 10 1.5.3 15% complete design report ......................................................................................... 10 1.5.4 50% complete design report ......................................................................................... 10 1.5.5 85% complete design report ......................................................................................... 11 1.5.6 Final design report ........................................................................................................ 11 1.6 Design certification ....................................................................................................................... 12 1.7 Innovative materials and components .......................................................................................... 12 1.8 Construction handover documentation – bridges ......................................................................... 13 1.8.1 “As constructed” drawings ............................................................................................ 13 1.9 Construction handover report – bridges ....................................................................................... 14 2 Bridge aesthetics ......................................................................................................................... 16 2.1 General ......................................................................................................................................... 16 2.2 Anti-graffiti coating ........................................................................................................................ 16 3 Bridge functional requirements ................................................................................................. 18 3.1 Traffic capacity ..............................................................................................................................SUPERSEDED 18 3.1.1 Number of lanes ........................................................................................................... 18 3.1.2 Clearances and shoulder width .................................................................................... 19 3.1.3 Geometry, design speed .............................................................................................. 20 3.2 Load capacity – freight efficiency .................................................................................................. 21 3.2.1 Design loads and construction sequence .................................................................... 21 3.2.2 Design traffic loads for new bridges ............................................................................. 21 3.2.3 Design traffic loads for widening/strengthening an existing bridge or culvert .............. 21 3.2.4 Design traffic loads for damaged bridges ..................................................................... 25 3.2.5 Heavy load platforms .................................................................................................... 25 3.2.6 Abnormal loads ............................................................................................................. 25 3.2.7 Special conditions for footbridges ................................................................................ 25 3.3 Load capacity – environmental and construction loads ................................................................ 25 3.3.1 Mining subsidence ........................................................................................................ 25 3.4 Hydraulic investigation, flood loadings and levels ........................................................................ 26 3.4.1 Hydraulic investigation ................................................................................................. 26 3.4.2 Minimum hydraulic forces on bridges ........................................................................... 27 Design Criteria for Bridges and Other Structures, Transport and Main Roads, August 2014 ii 3.5 Construction loads ........................................................................................................................ 27 3.5.1 Incrementally launched prestressed concrete bridges ................................................. 27 3.6 Construction loads all bridges ....................................................................................................... 27 3.7 Sustainability ................................................................................................................................. 28 3.7.1 Design life – new bridges ............................................................................................. 28 3.7.2 Design life for drainage structures ................................................................................ 29 3.7.3 Design life – remedial works ........................................................................................ 29 3.8 Durability – bridges ....................................................................................................................... 29 3.8.1 Steelwork ...................................................................................................................... 29 3.8.2 Fitments material .......................................................................................................... 29 3.8.3 Painted steel structures ................................................................................................ 29 3.8.4 Durability for concrete .................................................................................................. 30 3.9 Buried components (no inspection, maintenance practical) ......................................................... 33 3.10 Aggressive environments ............................................................................................................. 33 3.10.1 Sulphate reducing bacteria ........................................................................................... 33 3.10.2 Stray currents from electric railway or other sources ................................................... 34 3.10.3 Marine environment ...................................................................................................... 34 3.10.4 Cracks in concrete at the end of construction .............................................................