No minimum support length for bridges

[kww2008]

The AASHTO (highway) code specifies minimum support lengths for bridges depending on earthquake categories. The Australian Standards AS5100 series does not seem to have this requirement. Is this because the risk of an earthquake in Australia is low ?

 

[rapt]

In the current 5100 eqn 14.7.3 covers this where BEDC is the earthquake category.

There is a new draft of 5100 which has closed for review which modifies this further. You may still be able to get a copy of this.