Create a cube, tessellate it using triangulate method. Then use inset and allow for the thickness of struts to your liking. Then use intrude to eliminate the center portions. Duplicate along the Y axis and move down along Y then rotate girded cube 90 deg. along its Z axis and combine. This now can be further duplicated to make the girderwork as long as you need it, combining and duplicating along the way.

Message edited on: 02/17/2006 00:24