Termal load reinforcement

[RamiHabchi93]

Hi,
I am trying to understand how to determine the maximum allowable length of a building without expansion joint.
The problem is that I see,in case of contraction of a floor under thermal load,that we have to provide reinforcement for temperature what ever was the building dimension,with or without thermal joint,as the tensile stresses due temperature developes in the slab,even if they are small,cannot be resisted by concrete because it is cracked under flexure,so they need to be resisted by reinforcement.
I know that we provide shrinkage and temperature reinforcement always,but as a minimum reinforcement,not as additional to flexure.so when having flexure that requires reinforcement more than the minimum shrinkage and temperature reinforcement i see that we should always add thermal reinforcement.am I right?

 

[dik]

I've seen a couple of charts; I'll try to dig one up... I usually use 300' for concrete and 400' for steel... depends on the 'mood'.

You also have to be concerned about the climate where the structure is being constructed. In Winnipeg, we have a bit of an extreme... woke up this morning to a light coating of snow...

Dik

 

[RamiHabchi93]

Thank you but I want to be able to do my own chart, in other words determine using FE software if I need to provide an expansion joint or not.so I am trying to understand the concept of this.and i want to know if I always should put additional reinforcement for temperature an if not why