BA 16/97 The Assessment of Highway Bridges

Click on the Clause No. for the commentary.


2.1 Simple Distribution Methods (Edge Girders)


Clause 2.1


The Simple Distribution Method appears to give higher bending moments on edge girders than a simple static distribution?


The Proportion Factor KL makes no allowance for the position of the carriageway relative to the edge girder. Consequently a simple static distribution will often produce a smaller bending moment in the edge girder than the Simple Distribution method.
It is acceptable to use a simple statical distribution (see Clause 2.4) if the edge beam fails the Simple Distribution Method, but the internal girders should also be assessed using simple statics for consistency.


Back to Workshop  |  Back to Index