Column Form Blowout During Pour

[jar546]

This not only happened once, but twice on the same form for the corner column. There is a lot of wasted concrete. Formwork for outside corner columns doesn't have to be this difficult. Did you ever see this happen?

 

[e hilton]

Looks like they used whatever scraps of plywood were lying around. Is this the same site as the badly aligned block work?

 

[jar546]

Looks like they used whatever scraps of plywood were lying around. Is this the same site as the badly aligned block work?

Si

 

[Mark K]

Does not comply. The engineer needs to be involved in developing the fix.

The pictures say a lot about the contractor.

 

[north star]

@ > > >

The red ladder doesn't appear to be in that great of shape either !

< < < @

 

[Msradell]

Does not comply. The engineer needs to be involved in developing the fix.

The pictures say a lot about the contractor.

Engineers very seldom are involved in the design of forms etc. except if they are very complex. In this case it's an extremely simple feature that any competent contractor could easily build. Thus it boils down to the contractor being inept in this case.

 

[Mark K]

Engineers very seldom are involved in the design of forms etc. except if they are very complex. In this case it's an extremely simple feature that any competent contractor could easily build. Thus it boils down to the contractor being inept in this case.

The engineer will be focused on the repair of the damaged column. It is assumed that after the blowout there will be some hardened concrete that will not be prepared to accept the new concrete.

If any competent contractor cold have built the failed forms, then if suggests the contractor was not competent and likely needs the assistance an engineer could provide.

 

[Plumb-bob]

I have had the good fortune of being the guy shoveling up the concrete from a large blow-out, more than once. Contractors will do everything possible to keep the engineers out of it.

 

[Mark K]

I have had the good fortune of being the guy shoveling up the concrete from a large blow-out, more than once. Contractors will do everything possible to keep the engineers out of it.

The best strategy is to remove all of the concrete that was being placed before it hardens. Then you can pretend that the concrete was never placed and you can start afresh but it would help if you knew why it failed unless you want the next try to fail. Any contractor that does much concrete probably knows an engineer who designs formwork.