Assign geoemtry to a material (Dynamo)

Revit
,
1

Hello together,

I have a few questions about my Dynamo script. Dach.dyn (80.5 KB)

1.) Is it possible to assign a material to a geometry? In my example it would be reinforced concrete

2.) In my imported model there are lines on the surface (see picture) is it possible to remove them?

grafik
grafik754×524 103 KB

3.) Is it possible to measure an imported model in Revit, if so how?

Many thanks in advance