Batch plant broke down. . .
Batch plant broke down. . .
(OP)
. . .40 yards into a 200+ yard pour for a section of slab in a carousel aeration basin. Now a large section of the slab has about half the thickness in place, with most of the top mat of steel exposed, and some of the bottom mat exposed. They at least had the quick-thinking to 'spread out' what they had already placed up to floor level.
Contractor wants to clean out the loose stuff, chip out under the top bars, and continue when the plant is back up. Basically it leaves a horizontal construction joint in the slab for this section. In theory there is no leakage.
Slab thickness is 10", with #5 at 12" each way top and bottom. "Good slab" would be probably about 6" thick on top of this.
I'm leaning toward making him rip it out, but want others' opinions. Thank you in advance.
Contractor wants to clean out the loose stuff, chip out under the top bars, and continue when the plant is back up. Basically it leaves a horizontal construction joint in the slab for this section. In theory there is no leakage.
Slab thickness is 10", with #5 at 12" each way top and bottom. "Good slab" would be probably about 6" thick on top of this.
I'm leaning toward making him rip it out, but want others' opinions. Thank you in advance.






RE: Batch plant broke down. . .
Mike McCann
McCann Engineering
RE: Batch plant broke down. . .
RE: Batch plant broke down. . .
RE: Batch plant broke down. . .
What really concerns me most is: a)the roughness that gives me the bond could cause cracking in the surface when the new concrete shrinks (then again, the slab is restrained anyway--would this be any worse?), and b)I don't know if what is there was properly consolidated before they quit, and I know it's not being cured.
RE: Batch plant broke down. . .
RE: Batch plant broke down. . .
If this part was not really cured then, its structural valus is now in question.
Before you proceed in any direction, evaluate the condition of the already poured slab in depth.
RE: Batch plant broke down. . .
This would be easier and cheaper than having to rip out what is in place.
RE: Batch plant broke down. . .
I don't think the effort in removing it is that great given the many tools and equipment that contractors have at their disposal to demolish.
Regards,
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RE: Batch plant broke down. . .
RE: Batch plant broke down. . .
RE: Batch plant broke down. . .
Now he has no option, he has to remove the concrete carefully so that the rebar can be reused.
My suggestion is just call him into your office, tell him and then refuse to discuss any further.
By the way is this event covered by insurance?
RE: Batch plant broke down. . .