Photo Courtesy NEORSD Talking Heads Project owners are using Twitter to update the public by speaking for the tunnel-boring machines. Above is Mackenzie, northeast Ohio's 1,500-ton TBM, showing its yellow-and-green cutter head. Related Links: Q&A: Ten Minutes With Tunnel Boring Machines That Tweet Barnhart Modular Lift Tower Positions Seattle TBM Perhaps not since Bob the Builder have so many pieces of heavy construction equipment had so much to talk about. Instead of miniature, voice-overed claymation figures on a children's television show, Twitter is featuring actual tunnel-boring machines deployed at jobsites across the U.S. With some help from their human colleagues
The market is generally healthy and steadily growing, and margins are up for large specialty contractors. Further, advances in design tools and owner demand for collaboration are giving subcontractors a seat at the table early on in projects.