×
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

Masonry Wall On Steel Beam Top Flange

Masonry Wall On Steel Beam Top Flange

Masonry Wall On Steel Beam Top Flange

(OP)
Not being involved with masonry too much in my career, my knowledge of details for masonry connections is not a lot.  My specific situation involves supporting a 8' cavity wall (8" CMU + 4" brick) on a steel beam spanning a 12' opening where there is no wall on one side of the opening for bearing.  There is also a wall coming in perpendcular and there is a 8' opening below the wall .  Basically the two walls would meet at a "corner" and be supported at the corner by a post.    

My first thought was to just use a precast beam on top of the steel columns to span the opening, but for a myriad of reasons I won't get into here, the architect wants to use steel beams and columns at the corner at this spot.  I also thought about welded steel bars to the top flange of the beam extending upwards to anchor the bottom course or courses to the beam.  

Just putting a plate on top of the steel beam and resting the cavity wall on top would not seem to give any anchorage for the wall.  I've sized the beam to get a deflection of less than l/600, but my request is does anyone know of a detail or where I can go to get some typical details of attaching a cavity wall to the top flange of a steel beam to get the proper anchoring needed at the base of the wall?  

Thanks in advance for any help anyone can provide.

RE: Masonry Wall On Steel Beam Top Flange

I assume this is a seismic zone, and that is why you are worried about anchorage?

RE: Masonry Wall On Steel Beam Top Flange

(OP)
I am in Seismic Design Category B for this location.

RE: Masonry Wall On Steel Beam Top Flange

Does the architect want the steel beam exposed? If so, a plate on the top flange is ok but I would weld 1/2" studs at 32" o.c. to the plate and grout the those cells solid and weld studs at top flange above where the beam bears. I would also use ladder joint reinforcement for 2 courses above the lintel for crack control.  If the architect wants the beam covered, put the plate on the bottom flange to pick up the masonry face shells and weld the studs directly to the top flange of the beam.  At the masonry wall, bear the beam on a plate and weld it.  The plate should be anchored to the wall with (2)-3/4" bolts minimum.

RE: Masonry Wall On Steel Beam Top Flange

If the wall has vertical reinforcing, then, use dba's or thrd'd rod welded to the lintel to lap with the vertical rebar in the cores.

RE: Masonry Wall On Steel Beam Top Flange

(OP)
Thanks vincent pa and jike.  

Yes the architect wants it exposed.  The details I came up with is similar to what each of you suggested.  I basically welded a rod to the plate on the top flange to develop with the reinforcement in the wall and have the horiztonal reinforcement (which I am using anyway for the cavity wall) for the cavity wall in the first two courses above the beam.  I think I will go with this for now unless I can think of something else or find something else for a situation like this that is more typical.

I also have a call into a couple of my masonry subcontractors to see if they have any ideas or have run across this situation before and there is a detail they have seen before that will work and might be easier.  I will post them if they are good alternatives to above.

Thanks again.

Thanks again.

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