environmental impact of my project

[COLOR=#333333]I have parking of car as a concrete building with 15 meter height. by using with two scheme, one of them design as a flat slab, other one as two-way slab, my solution according to eurocode [/COLOR]

[SIZE=4][COLOR=#333333][COLOR=#FF0000]my first inquiry is:
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[COLOR=#0000FF]what is the criterion of the environmental impact of concrete building to assess that the first building has less environmental impact than other one, I want to represent the environmental impact between them as number, how can I do that please ?
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[SIZE=4][COLOR=#333333][COLOR=#FF0000]my second inquiry is : [/COLOR][/COLOR][/SIZE]

[COLOR=#0000FF]how can I apply wind load on my two scheme please? with simple steps by using hand solution and according to Eurocodes or BS, I wander if I can use tedd program to apply the wind load[/COLOR]

[COLOR=#333333]Regards[/COLOR]

[COLOR=#333333]Sarmad[/COLOR]