×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

1953 AASHO bridge specifications

1953 AASHO bridge specifications

1953 AASHO bridge specifications

(OP)
I'm working on an existing rating/rehab of a cast-in-place concrete T-beam bridge. For some reason, the shear ratings at one location along the span are coming up REALLY low using the latest aashto criteria, but the bridge beams look fine.

The bridge was built in 1958-ish and I would like to find out about the shear spacing criteria of the time.

I happened across this old post, but couldn't reply to it for some reason...same question...Does anyone know if the AASHO 1953 bridge specifications are readily available somewhere (online)?

http://www.eng-tips.com/viewthread.cfm?qid=109274

RE: 1953 AASHO bridge specifications

(OP)
Thanks for the response.

A few days ago, I stumbled across a paragraph from As per PennDOT Pub 15M (Design Manual, Part4 - "DM4"), 5.5.5.1: "If existing beams do not adequately rate for shear using the current LRFD shear criteria, the beams should be rated using the criteria used for the original design."

We ran the ratings using the AASHTO 1973 specs and the shear ratings were all above 1.0.

(they don't apply, since LRFD still governs for moments, but several of the 1973 moment ratings went below 1.0)

RE: 1953 AASHO bridge specifications

Glad it worked out foy you.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources