Preliminary analysis of a ceiling light fixture that fell into moving traffic in early February at Boston's Big Dig tunnel system suggests the fixture shows signs of severe corrosion caused by salt from snow and ice treatment. Related Links: Corrosion's High Cost: Rust Never Sleeps Performed by West Boylston, Mass.-based Massachusetts Materials Research, the analysis indicates the fixture failed because of severe corrosion to the aluminum wire way at the locations where the light assembly was attached with stainless-steel clips, according to a Massachusetts Dept. of Transportation report released on April 13. The incident caused no injuries and no property
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.