×
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!

*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

Wall Collapse in Harrisburg, PA

Wall Collapse in Harrisburg, PA

Wall Collapse in Harrisburg, PA

(OP)
Here are some photos of a wall collapse that occurred yesterday in Harrisburg, PA. No injuries or deaths.

Link

RE: Wall Collapse in Harrisburg, PA

It seems there's not much info to go right now.

RE: Wall Collapse in Harrisburg, PA

There is a before and after picture here:
http://www.pennlive.com/news/2016/05/harrisburg_wa...


And another picture from 1909 that shows it was originally a standalone wall (note the windows which are filled in in the picture above to orient yourself):
http://www.pennlive.com/news/2016/05/mulberry_stre...


This map circa 1955 shows that the wall (CONC WALL left side) was incorporated into a building which was eventually removed and replaced with fill behind the wall and parking above:



RE: Wall Collapse in Harrisburg, PA

So the wall was originally designed and built to only support vertical loading, correct? If they never provided any sort of anchoring/reinforcement when they back-filled it so as to provide a parking area, this could be the real fault. Now there does appear to be some shallow 'buttresses' on the outer face of the wall that can't be seen from the 1909 photo due to it looking toward the backside of the wall, so we don't know if those were added when the back-filling was done, but even so, they don't look like they would all that much lateral support for such a tall wall.

John R. Baker, P.E. (ret)
EX-Product 'Evangelist'
Irvine, CA
Siemens PLM:
UG/NX Museum:

The secret of life is not finding someone to live with
It's finding someone you can't live without

RE: Wall Collapse in Harrisburg, PA

??? The map looks like this was built to be the side of a building, and not a wall at all. Or is this my mistake in understanding?

Where was the city inspection?

RE: Wall Collapse in Harrisburg, PA

Compare the 1955 map from Spartan5's second link with this one from 1901

The wall was apparently free standing in 1909, but that might have been for an older building that shows up in the 1901 map, and then incorporated into the building as shown in the 1955 map. After that, it was apparently left as a retaining wall when the building itself was torn down, and the sublevels filled in. The railings look similar to what's on the bridge itself in 1909, so it might have been part of the bridge design

TTFN
I can do absolutely anything. I'm an expert!
FAQ731-376: Eng-Tips.com Forum Policies forum1529: Translation Assistance for Engineers

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! Already a Member? Login



News


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close