Getting a thickness value from a wireframe solid

Hi all,

does anyone know how to get a thickness attribute in a wireframe solid? I basically want to get an average thickness for a set of wireframes... in othere software I would create a block model with a variable z cell size, I will fill the wireframes with the blocks (correctly rotated etc) and the cell height measurement would then be the thickness... how do I get something similar in Surpac?