×
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

A615-85 Billet Allowable Tension

A615-85 Billet Allowable Tension

A615-85 Billet Allowable Tension

(OP)
What is the Allowable Tension for A615-85 Billet Rebar?

Thank you!

RE: A615-85 Billet Allowable Tension

I believe the 85 represents the ultimate tensile strength of the bar in ksi.  Do you design concrete reinforcing using ASD?  I didn't think anyone did anymore so why do you need the "allowable"?

RE: A615-85 Billet Allowable Tension

EIT2,

ASTM A615-85, A615 is the designation for billet steel, 85 is the year of designation such as 1985. A615 is available in 40, 60, qnd 75 ksi, with 60 ksi being used most often (due to availability).

Ultimate strength of any section of a reinforced conrete beam may be computed assuming the following:

Strain in the concrete is directly proportional to the distance from the nuetral axis.

Except in anchorage zones, strain in reinforcing steel equals strain in adjoining concrete.

At ultimate strength, maximum strain at the extreme compression surface equals 0.003 in/in.

When reinfrocing steel is not stressed to its yield (fy), the steel stress is 29,000,000 psi times the steel strain, in/in. After the yield strength has been reached, the stress remains constant at fy, though the strain increases.

Tensile strength of the concrete is neglible.

RE: A615-85 Billet Allowable Tension

ERV - you are probably right - I was just guessing about the 85 psi.....the year makes more sense.

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