pouring concrete section by section 3

[ticas]

when you are pouring concrete section by section in a column, which section is allowed partial pour in your practice? Can you do it at middle of column? I know the best is to pour the entire columns at once but the problem is you can't insert the vibrators thru the upper floor column-beam joints in the lower column because they are blocked by the beam longitudinal bars. What do you usually do?

 

[Ron]

hokie66....this is as good an example of forum mentoring as I've ever seen in the forums! Nice job!

ticas....there is not always a need for beams in a column/slab system. It is common to have slabs supported by columns without beams. You obviously have to accommodate shear considerations (punching shear) at the column/slab interface, but slabs can often handle the imposed loads.

As for calculating settlement of the concrete around/under rebar...can't be done by any reliable method! This is a parameter that has multiple facets, mostly related to the mix, placement methods and......thickness of the section as we've discussed.

 

[hokie66]

Thanks, Ron. As JAE said, it was quite a merry-go-round, and as you well know, I'm not always that patient. I think ticas learned a few things. He certainly is persistent, which is a good thing.

 

[Archie264]

...and if I may add, ticas stated his piece and continued to put forth his position, but in the end didn't ignore the advice from the most knowledgeable and experienced participants. And, he faced down the contractor, forcing it to be done correctly, which is not a trivial thing to do. A good thread all around, in my opinion. I know that I learned a lot by following along.