AASHTO LRFD temperature gradient

[EU72]

I spotted something odd in between the AASHTO 2007 SI units and the US version for the temperature gradient cl 3.12.3.

If you look a the San Francisco Oakland bay design criteria it also say that 30oC = 54oF:

http://www.dot.ca.gov/hq/esc/tollbridge/SFOBB/EastSpan/012024/MaterialsHandout/cd2/design1.pdf

It looks like there is a mistake in the conversion from Fahrenheit to Celsius forgetting to add 32 to the values in brackets?

 

[TehMightyEngineer]

For what it's worth my 2016 AASHTO Table 3.12.3-1 is identical to the 2012 Table.

Professional Engineer (ME, NH, MA) Structural Engineer (IL)
American Concrete Industries

http://www.americanconcrete.com

 

[bridgebuster]

I think it's global cooling.

 

[BridgeEI]

More than likely it's never been caught. I'm not sure of anyone who actually uses that clause...You can pose the question to AASHTO and they can determine which value is correct. They're pretty responsive.