Thursday, October 29, 2009

Re: bridge debris

Does a two year bridge repair have less capacity than that of a 50 year
repair?
Are there less reviews for a two year repair?

What is a two year temporary fix? What is the design criteria difference
for:
* A new bridge
* An old bridge
* Temporary 2 year patch

What return period is expected for wind or seismic on a two year patch?
Historical Unreinforced Masonry Buidling=100 years? IBC=500years? 1000
years?
What would be the difference in cycles of loading for fatigue?

David Merrick


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