[davidwilcox]

Hi,
I need the help of all the ICEM experts. I am trying to mesh a place with plenty of buildings, of which some of them are complex. This has to be done in 3D. I have been trying for almost 3 weeks now but I'm still getting errors in computing the mesh with tetrahedrals. I tried to mesh one building and brought it into fluent but I can't even get that right because it gives me negative volume when i imported it in. And sometimes I have a hole in my mesh( which i do not know how to fix).
I have always been a fan of blocking and that is pretty much how I create all of my previous mesh. But this is a case where blocking is simply impossible. Can you offer me some tips?

I have attached my nightmare geometry to this post. Many thanks in advance.