The layout of the office, with its six pairs of eight - sided concrete columns running down the middle, also proved ideal for a zip line. (articles.latimes.com)
This solution proposes a steel frame touching down at the roof surface directly over existing concrete columns below. (weberthompson.com)
Created as a habitable structure, ReActor measures 44 - feet by 8 - feet, and rotates 360 - degrees balanced atop a 15 - foot concrete column. (wassermanprojects.com)