Spent some time tonight building the HVAC ducting in the Dub Rivas map. All of the HVAC pieces were done in Maya and imported into UnrealEd. Initially I ran into a few issues with shadows showing up at the joints of the HVAC pieces, but figured out that if you plan to but two or more meshes together in UnrealEd, you should try to not butt surfaces together. For example, if you want a tube, you would create a cylinder. By default, that cylinder will have a face on each end. Simply delete those faces before importing into UnrealEd and everything will look smooth.

Here are a couple new screen shots of Dub Rivas.

http://blogbylevi.iveldesigns.com/gallery/image/8.aspx

http://blogbylevi.iveldesigns.com/gallery/image/9.aspx