Reinforced Concrete: Reinforcing Section or Volume Ratio?

Hi,

 I want to model a simple bending RC beam using "smear" approach in ANSYS. Can anybody tell me which approach is right or both are the same?

1. I create two real constant sets for SOLID65 element. First one doesnt have volume ratio for the reinforcement, the second one does. Then, I create two seperate volumes adjacent to eachother and one under the other. I glue them and before meshing I choose the first real constant set for the upper one and the second set for the other as mesh attributes.

2. I  create one volume of SOLID 65 and mesh it. Then I create a smeared reinforcing section for the lower mesh elements by using EREINF command.

Note: I create two material models, one for concrete and one for reinforcing steel.