Design loads for box culverts for the SM1600 design loading of the Australian Bridge Design Code AS 5100

The new SM1600 design loading of the draft Australian Bridge Design Code AS 5100 is complex. Modifications are suggested to the AS 5100 loading provisions for the design of box culverts, particularly in regard to live load surcharge and compaction pressure. The use of the accompanying lane factors, together with the different uniform lane loads associated with the M1600 and S1600 design vehicles, appears to add complexity to the design of large precast box culverts and other short span or buried structures that is not required for these structures. Accordingly, it is suggested that the SM1600 loading be modified with a view to simplifying it for the purpose of designing culverts and other short span buried structures, to a tandem or a triaxle loading applied without uniform lane load or accompanying lane factors. The adequacy of the current M1600 triaxle load is reviewed using available data from Culway sites, and the use of this data for verification and adjustments of design vehicle loads is briefly discussed. (a) For the covering entry of this conference, please see ITRD abstract no. E211602.


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  • Accession Number: 01011307
  • Record Type: Publication
  • Source Agency: ARRB
  • ISBN: 0855886986
  • Files: ITRD, ATRI
  • Created Date: Dec 19 2005 3:01PM