×
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

A307 vs. F1554-36 -- AISC vs. ACI

A307 vs. F1554-36 -- AISC vs. ACI

A307 vs. F1554-36 -- AISC vs. ACI

(OP)
A co-worker used Apendix D to figure the shear of an F1554-36 1"diam. anchor rod (13.7kips) . I used the single shear value of an A307 in the AISC tables (9.42kips).
I realize that these anchors aren't technically the same, but for this shear/structural discussion should we be getting the same, or at least closer, results? I think the tensile strength differences between the bolts are 58ksi & 60ksi. Thats only a 4% difference, but our individual findings are MUCH further apart.

Thanks.

RE: A307 vs. F1554-36 -- AISC vs. ACI

(OP)
Was reading my AISC incorrectly, results should be:
ACI -- 13.7kips
AISC -- 15.9kips

still a bit of a difference.

RE: A307 vs. F1554-36 -- AISC vs. ACI

In my AISC (13th edition), the available bolt shear for a 1" dia bolt (A307) is 14.1k (LRFD). I used Table 7-1.
Table 7-1 assumes the nominal bolt area is 0.785in^2. This is bigger than the "effective area" of the 1" dia bolt used for calculation in ACI(.606in^2).

That could account for difference in my opinion.

RE: A307 vs. F1554-36 -- AISC vs. ACI

Willis- I appreciate your repost, I was just browsing through the posts but I needed this clarification for some anchor rods I am designing. Your paragraph with the formulas was spot on, don't see why the same formulas wouldn't apply to bolts or anchor rods, there is no fundamental difference in the mechanics. AISC could just throw all the rods and bolts into one table to keep it simple.

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