×
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

Tilt up T.I. mezzanine attachment

Tilt up T.I. mezzanine attachment

Tilt up T.I. mezzanine attachment

(OP)
I'm just looking for info on what other engineers in the industry are doing for projects like this. I have an existing 6" tilt up in which my client wants to build a mezzanine, and I'm going back and forth between ledgering on to the existing wall, or wood framing a wall inside. My fear is that the movement of the existing structure will cause excess stress to the new wood structure if I use the ledger design, but on the other hand, it would be nice to use the shear properties of the concrete walls. Any input would be greatly appreciated.

RE: Tilt up T.I. mezzanine attachment

Get design calcs and plans for the existing structure. Check deflections (especially from wind load) then design from there.

Timber is pretty flexible though and most small single storey r.c. structures wont deflect more than 10mm so you should be fine.

RE: Tilt up T.I. mezzanine attachment

Probably could be done either way. If you use separate wood framed walls, what would they bear on?

What does T.I. mean?

BA

RE: Tilt up T.I. mezzanine attachment

Just to expand on what I meant by "Check deflections (especially from wind load) then design from there": I would put in fixed supports in my analysis model of the r.c. structure where the timber structure would attach the the existing. That will give you reaction forces which you can use to design the mezzanine.

RE: Tilt up T.I. mezzanine attachment

Just thinking about strain compatibility here. If the wood wall and tilt-up wall are connected then the STIFFER element (i.e. the tilt-up wall) is likely to take additional load. So, I wouldn't tend to be worried about the wood wall getting damaged. Quite the opposite actually, I would worry about how much additional load the mezzanine + wood wall imparts on the tilt-up wall.

RE: Tilt up T.I. mezzanine attachment

the tilt up wall would be ok usually, it would cut the unbraced length down of the wall.

RE: Tilt up T.I. mezzanine attachment

BA: T.I. = Tenant Improvement

RE: Tilt up T.I. mezzanine attachment

I would be careful here if you are in a high seismic area as the lateral from seismic will probably control over wind.

If you attach the mezzanine to the tilt-up structure, you will have to run an updated seismic for the entire building, and it will probably fail. You will not want to go there. The best course would be to make the mezzanine its own separate structure with shear walls or frames.

Mike McCann
MMC Engineering

RE: Tilt up T.I. mezzanine attachment

Thanks Qrs, I wouldn't have guessed "Tenant Improvement" in a million years.

BA

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