×
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

Existing footing assumed without reinforcing

Existing footing assumed without reinforcing

Existing footing assumed without reinforcing

(OP)
If I assumed the existing footing without reinforcing steel, how can I determine the load capacity of the inverted “ T “ 4+8+4" concrete footing which will support second floor and the roof?  

RE: Existing footing assumed without reinforcing

What is the thickness? (assuming 20" width)

Dick

RE: Existing footing assumed without reinforcing

Use the design provisions of ACI 318, Chapter 22 for Plain Concrete.

RE: Existing footing assumed without reinforcing

(OP)
It just like a regular footing with 8" stem wall and the bottom is about 4"+8"+4".  The hight of the stem wall is about 24"

RE: Existing footing assumed without reinforcing

Ken,
Concretemasonry asked you for the thickness (depth) of the footing.  I take it your footing is 16" wide.  If it is at least say 8" thick, the capacity will depend on the soil strength.  Do you know that?

RE: Existing footing assumed without reinforcing

(OP)
Oh! the depth is 9"

RE: Existing footing assumed without reinforcing

My error on the quick width calculation. I said 20" out of habit and meant 16" total footing width.

With a thickness of 9" and only a 4" projection beyond the wall, there is no bending or shear problems in the 4" wide by 9" thick extension.

The capacity will be limited by the soil capacity.

Dick

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