Image Courtesy of university of california, berkeley Shock Waves Harmless shock waves known as primary waves (yellow circle) come seconds before slower, destructive secondary waves (red circle). Related Links: Video of ShakeAlert in Action Detailed ShakeAlert Proposal An early warning system that predicts an earthquake's approaching shock wave up to a minute before it strikes is ready to become operational throughout California. Further, a recently proposed bill would fund expansion of the system.The bill, introduced by state Sen. Alex Padilla (D), would support the ShakeAlert system, developed by the U.S. Geological Survey and an international coalition of universities. It is
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.