×
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

cross bracing - steel and masonry

cross bracing - steel and masonry

cross bracing - steel and masonry

(OP)
I'm looking at a situation I don't agree with and want some second opinions. We were contracted to design a mezzanine inside a pre-engineered warehouse building and a attached office. There is a masonry wall with it's centerline hitting the back edge of Their columns. They are now telling me that they want their cross bracing to attach to my masonry wall at a point right next to the column instead of directly to the column. It's an 8 Kip load applied by a rod.

I explained that since we were already Chipping the block around the column we might as well chip around the cross bracing also. They insist on bearing on the block and say it's my problem.

1. Does this seem like the pre-engineering company trying to pawn work off onto me?
2. Does anyone know of a good reference that could help explain how to desing for a situation of this nature?
I know I'l have to grout the block that I attached the connection to but I don't have any idea how to determine a lateral force in the direction of the wall.

RE: cross bracing - steel and masonry

I would say that the PEMB designers should provide complete lateral support for their building via tension bracing. It is normal delegate the design of the PEMB system by the engineer of record. They the engineer of record would design the foundations based on the reactions supplied by the PEMB supplier.

To be honest, I have not seen a situation where the PEMB supplier is asking the CMU designer to take the lateral load of their building unless the wall is a shear wall and is integral part of the PEMB.

This is my two cents worth.

Regards,

Lutfi
www.cdeco.com

RE: cross bracing - steel and masonry

Because of other constraints, I have designed masonry shear walls for PEMB.  These were pseudo design build situations, so I was communicating with the PEMB engineers up front.  PEMB engineers x-braced down to a certain elevation.  PEMB engineers designed the connection to the masonry wall (with my approval) and supplied loads to wall.  I have never heard of PEMB engineers asking the EOR to use a masonry wall.  Unless there is a very good reason to do this, the PEMB should be a stand alone system.

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