The single-source design, fabrication and schedule control eliminates inconsistencies and interruptions during the entire building design and erection process. Additionally, Long Bay purlins are bolted to the rafter rather than welded, requiring 50% less horizontal bridging than a bar joist. Horizontal bridging is attached with self-drilling screws instead of welding as with a typical bar joist. Bolting also allows the erector to connect materials together on the ground and lift in sections during installation. This produces substantial labor cost savings, improves on-site safety and increases speed to market.