Darth I believe your looking for these Tri-Hexagonal structures http://forum.kerbalspaceprogram.com/threads/24849-WIP-THSS-Tri-Hexagonal-Structural-Strut?highlight=Semni
A Very Nice Mod... So far I'm really impressed on the detail and work put into it. I'm a engineer at ULA and have been hoping that someone would develop a Mod for both the Delta and Atlas launch vehicles. I would like to help with whatever I can.