Delay between pouring columns and slabs/beams over.
Delay between pouring columns and slabs/beams over.
(OP)
How much delay is required between pouring columns and pouring the slab and beams over?
We specify 24 hours. What do you specify and what problems have you seen when there is an insufficient break?
We specify 24 hours. What do you specify and what problems have you seen when there is an insufficient break?






RE: Delay between pouring columns and slabs/beams over.
RE: Delay between pouring columns and slabs/beams over.
If you are doing a multi storey it is a good idea to allow the columns to shrink a bit prior to placing the floors over, this helps minimise the column shrinkage effect on the height of the floors.
On a short building it wouldnt make any difference.
24 hours seems like a reasonable minimum.
Strengthwise Civilperson is 100% correct.
RE: Delay between pouring columns and slabs/beams over.
RE: Delay between pouring columns and slabs/beams over.
RE: Delay between pouring columns and slabs/beams over.
The delay in placing concrete in members supported by columns and walls can vary between a few hours to a day or longer depending on weather, concrete mix etc.
RE: Delay between pouring columns and slabs/beams over.
in the vertical support members is no longer
plastic.
R6.4.6 — Delay in placing concrete in members supported
by columns and walls is necessary to prevent cracking at the
interface of the slab and supporting member caused by
bleeding and settlement of plastic concrete in the supporting
member.
RE: Delay between pouring columns and slabs/beams over.