effect of cracking in tension region
effect of cracking in tension region
(OP)
Hi, how would you approach the analysis of a slab where a crack exists through the centre of the span in one direction. The crack I would say is over 0.3mm although it is hard to say at the moment. How does this effect the analyis? If the depth is not as far as the reinforcement?






RE: effect of cracking in tension region
RE: effect of cracking in tension region
RE: effect of cracking in tension region
RE: effect of cracking in tension region
As others have said, the presence of a 0.3mm crack is not normally a cause for concern
What is the reason for the analysis, are there other concerns such as excessive deflection?
RE: effect of cracking in tension region
You said that the crack is only on the tension face so it is probably not restraint. If the load on the slab is significantly under the design laod I would be checking it to make sure there is sufficient reinforcement in the right places. Normally, the reinforcenment required for strength will give a crack width of about .3mm if the cover is not excessive and if there is not a lot of restraint to shortening.
If the slab is not fully loaded, I would start to look at the design in terms of both strength and crack control
RE: effect of cracking in tension region
RE: effect of cracking in tension region
RE: effect of cracking in tension region
Arguing with an engineer is like wrestling with a pig in mud. After a while you realize that they like it
RE: effect of cracking in tension region
In that case, you need to determine if strength is ok. If there is a load path to get the loads to the supports.
Then you need to check to see if the reinforcement has been placed where the elastic tension stresses occur. If not, it is still possible that you have adequate strength but bot crack control.
Without more information as requested by rowingengineer, we cannot comment further.