This is an honest question. I don't know very much about steel or concrete use in construction. What is the difference in using steel versus concrete in the construction of Kyle. I know it goes up faster with steel, but what is the difference in strength and longevity of the two materials? What are the advantages/disadvantages of using one or the other? Will Kyle be effected more or less on the West side by the sway of Sawing 'em off?