Photo by Eduardo Miranda/Stanford A wood-framed house sitting on a system of new, low-cost base isolators survived two series of shake-table tests with no structural damage. Photo by Eduardo Miranda/Stanford Dish-shaped isolator made from galvanized plates and high-density plastic allows the house to recenter itself after an earthquake. Related Links: New Concrete Bridge Bent System May Minimize Seismic Damage Shaking Things Up to Improve Seismic Design Recent shake-table tests on a wood-framed house—equipped with newly developed low-cost seismic base isolators—confirmed predictions that the two-story house would come through structurally unscathed. The goal of the research, considered an important step toward
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.