Is Temp. & Shrinkage Reinf. Required in Both Directions? 1

[mdmiller]

I am designing a footing where Temperature and Shrinkage steel controls.

If say #5 @ 12" o.c. is required do I need to provide this steel in both directions or just one?

Thanks!!

 

[oneintheeye]

just as a note for slabs positions close to a free edge (e.g smaller slabs in particular) no temp. shrinkage rebar is required since there will not be enough shrinkage strain developed i.e. over the tensile strain of concrete.

 

[mdmiller]

Thank you!!