Problem geting mass from revit

Hi I am new here. i am trying to get a model in situ from revit to dynamo. and dynamo create a new solids fron de arc edges i was trying to remove one by one but i realice that solids make holes to mis model in situ. i was trying to do a form like “Setas de Sevilla - Metropol Parasol” first get my mass and then with meshintersect create planos give them a thickness I sope someone can help me please.

my revit file

this is what i am trying to do like setas from Sevilla