Recourse for RC cracked Girder?

[wardak21]

An RC girder is cracked just 120 cm from its support, the crack is deepen enough from all four sides.

What is the major risk for that?

what do i need to do to repair it for use?

respects.

 

[JedClampett]

You need to provide more information. Loads, span, cross section, reinforcing, etc. A sketch would be helpful. Did the crack happen immediately after construction, when shoring was removed or after some time?
In general a crack near a support is due to a shear problem.

 

[frv]

Jed is right.. more info would be helpful, but it definitely smells like a shear problem, and that is not good. You may want to get a structural engineer involved ASAP.

 

[hokie66]

A photo would help, as well as the information requested above. The risk is that it may fall down, but that depends on what caused the crack.

 

[wardak21]

dear all, this is a photo of that wall

 

[wardak21]

this is another photo for more details.

the beam crashed after loading.

 

[JedClampett]

That is truly ugly. But I'd still like to see the design drawing(s) or at least a photo of the wall (beam) that shows the length, supports and some proportion of the issue. Was this a test load or just when they pulled off the shoring?
I don't want to push the panic button, but some shoring looks necessary. That's a huge crack/spall.

 

[apsix]

The photos show that the cracking is significant, but we need a lot more information to be able to assess risk.
If it cracked due to loading the beam was inadequate; a simple repair is not enough, it will need strengthening modifications.

You need an experienced structural engineer on site.

BTW, impressive photo file names.

 

[hokie66]

Jed and apsix are right. We can't assess why this failed without a lot more information. My guess would be that the beam was trying to transfer an offset column load, but as Jed said, a wider picture is required to get an idea of what happened. If you don't have the experience, get a structural engineer involved who does. And safety first...cordon off the area and get some shores in place, designed to carry all the load which the beam was supposed to carry.

 

[csd72]

You need to shore this and get a structural engineer involved IMMEDIATELY!

This is not the place for free structural advice.

 

[dik]

Looks a bit like a bonding failure of some very large bars... Can you provide any information about the loading history?

Dik

 

[Larryhd2]

Was there any resolution to this?

I'm always interested in failure analysis.