good morning, I am a student at the Polytechnic of Milan, I am writing my master’s thesis using Karamba 3d, it concerns the optimization of bridges. I have some questions.

•in practice I divided the road into two sections, one is made of concrete and the other is made of steel.I used two differenze line to beam component. using optim-cross section I would like to be able to let him choose the lightest one, giving a range of wall thicknesses. I would therefore like to optimize two different lines at the same time, is it possible to do this? if so how?

• I created the cost of the structure through mathematical actions based on the dimensions of the cross-sections placed, is it possible to optimize by imposing the minimum value of the cost value? by, for example, varying the length of the concrete part and the steel part?

• as a last question I was wondering if there was a command that, given an array of values, would tell me the maximum value, for example by using a polyline and looking at “utilization of beam” I would automatically have the maximum utilization value among the given values.

I thank you for the time you dedicate to me and I hope for a response as soon as possible. thank you very much.