Image courtesy of Sundt Construction 3_D model section view of a plan for a trench to bury a sewer line 45 ft below grade. VDC analyzed scenario calls for a two step process to excavate a trench wide enough to hold the spoil from a second trench dug in the center to minimize hauling while maintaining safe slopes and achieving the depth required. Related Links: Read Cylwik and Dwyer's full paper: Virtual Design and Construction in Horizontal Infrastructure Projects Construction processes in vertical buildings are often repeatable—and repeated. That helps make that kind of construction a good fit for building
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.