×
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

Composite Steel Deck Interface With Concrete

Composite Steel Deck Interface With Concrete

Composite Steel Deck Interface With Concrete

(OP)
I was wondering if there are published values for the interface/bond strength between composite steel deck and the concrete. I have looked through USD and Vulcraft books and can't find a value.

RE: Composite Steel Deck Interface With Concrete

You most likely have to go back to the research testing that was done for the particular deck.

RE: Composite Steel Deck Interface With Concrete

I know very little about the subject, but I thought that on composite design you ignored the bond strength and assumed that the force was transmitted through the shear connectors.

RE: Composite Steel Deck Interface With Concrete

I believe the question has to do with composite deck and not composite beams.

RE: Composite Steel Deck Interface With Concrete

(OP)
Sounds like its not readily avaible data. Thanks JAE i will try your contact. One idea i had was that it could be calculated roughly from the load and span data given for a particular deck and concrete thickness. From their allowable load and span you have an allowable moment, and you know the couple geometry and therefore can get the tension force in the deck which should be similar to the bond/interface force. Is this logic flawed?

RE: Composite Steel Deck Interface With Concrete

The primary mode of failure for composite decks is almost always shear-bond failure between the deck and concrete.

The stress induced on that interface is a horizontal shear (similar to the VQ/I calculation) but the problem is the deck is not uniformly located relative to the deck/concrete section neutral axis so the stress varies depending on the deck profile.

I seem to remember that there were design formulations for this shear-bond capacity that had been developed.  I'll see if I can find some of them in my old notes.

RE: Composite Steel Deck Interface With Concrete

I know of at least one new composite slab design that uses deck with no embossments whatsoever.  I haven't went looking for the research, but I'm sure the concrete-deck bond strength must be very substantial.

RE: Composite Steel Deck Interface With Concrete

If I remember correctly the keystone shaped deck by Epic Metals is the kind that provides bond without nibs. I know that Epic has changed there market focus and now produces only speciality decks.

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