×
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

Renovation Project

Renovation Project

Renovation Project

(OP)
Hi,

I am working on a renovation project at a mall. The structure is a steel frame with 20'x20' bays.

We have demolished a floor in one bay to construct a new entry stair to the mall. The foundation is a raft. The bottom of the stair will extend beyond the existing raft. My initial comments to the client were that I would support the stair independent from the existing superstructure. The idea is that we would extend the raft to pick up the end of the stair and build up from the raft. My thought process behind this was it seems cleaner and although it is a raft, I felt it would be good to spread the load on the raft as much as possible by using load bearing walls instead of columns.

I have recently been thinking why not support the top of the stair on the existing steel beams to save on a few walls.

The building is about 15years old and because of the raft, I am not overly concerned about differential settlement. Is there any preference between the options. Any thing I may be missing?      

Thanks

RE: Renovation Project

Check the strength and stiffness of the existing beams to support the stair loading.

 

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