ASME B31.1-2004/2007

[rocio74]

Hello all,

I was checking the ASME B31.1-2004 and ASME B31.1-2007 and I noticed that the maximum allowable stress values in tension (table A-1) have changed from 2004 to 2007. Did you know that? Why has it changed? Materials have physical properties fixed


Thank you very much,

Regards,
Rocio

 

[DSB123]

rocio74,
The reason is the basis of calculating the allowable stress is different for the twom editions of the Codes. Look at the section on determination of allowable stress.

 

[metengr]

Incorrect information. Paragraph 102.3.1 (A), (B) (C) in the 2004 Edition and in the 2007 Edition of ASME B31.1 regarding allowable stress values and other stress limits reads the same.

Second, LOOK at the summary of changes in ASME B31.1/2007 Edition on page xiii, there is no mention of any change to Table A-1, there is for Table A-3.

pg 154–157 Table A-3 For A 479 materials, Type revised