Structural Steel Specification
Structural Steel Specification
(OP)
You often see bridge steel specified as meeting the requirements of AASHTO M270/ASTM A709. Is there any difference between the two specifications?
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS Come Join Us!Are you an
Engineering professional? Join Eng-Tips Forums!
*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail. Posting GuidelinesJobs |
Structural Steel Specification
|
RE: Structural Steel Specification
RE: Structural Steel Specification
(Can you tell I am not a fan of M 270? I tried for years to get them to just get rid of it and go direct to ASTM A 709, but turf is turf.)
Until a few years ago, the words were not exactly the same, but the meaning was the same. The common misperception was that ASTM did not specify Charpy testing while AASHTO did, and perhaps this is still the misperception, but it was not correct then and it is not correct now. The reason for the misperception was that AASHTO put the requirement in the body of the spec ("For tension members, specify Supplemental Requirement S83") whereas ASTM put it in the supplemental requirement itself ("this supplemental requirement shall apply to tension members"). Then people got tired of the confusion and changed the specs so they were both the same. And they will remain the same until the AASHTO committee goes back to being lazy about keeping up with ASTM and then M 270 will be two years behind A 709 again.
More of an answer than you wanted.
Hg
Eng-Tips policies: FAQ731-376: Eng-Tips.com Forum Policies
RE: Structural Steel Specification
RE: Structural Steel Specification