I'm a Canadian bridge engineer with no experience of AS 5100. Out of curiosity I was looking through a copy of AS 5100-2004 and noticed that it doesn't seem to provide a method (non-refined) for determining the distribution of live load to bridge girders or strips. If I didn't miss it, how do Australian engineers determine the live loading on say the exterior girder of a straight constant-width slab-on-girder bridge. Is it covered in a different document like a bridge manual? Is a statically-determinate rigid moment arm analysis done (hope not) or is a refined analysis required, like perhaps a grillage analysis as a minimum?
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