Dear all,

I am working on size optimization of frame structure. And I am using Design of planar steel frames using Teaching–Learning Based Optimization as a base paper which is based on  the American Institute for Steel Construction (AISC) Load and Resistance Factor Design (LRFD).

Here I faced difficulty to find density of material. For that I refereed similar typed of paper but density is not specified.

Can anyone help me to get density of it.

Thanks 

http://www.sciencedirect.com/science/article/pii/S0141029611003634