Poor quality, often homemade concrete led to widespread building damage in Port-au-Prince following last month’s earthquake in Haiti, says Ken Hover, an engineering professor at Cornell University who had recently returned from the devastated city. Slide Show Photo: Ken Hover Some buildings suffered cracks rather than total failure from Haiti's devastating 7.0 magnitude earthquake on Jan. 12. Hover made his remarks Feb. 3 at the World of Concrete tradeshow in Las Vegas. He had performed structural assessments for two university-backed Port-au-Prince health clinics from Jan. 20-25. The clinics consisted of 15 separate structures. Hover says he used California's post-earthquake investigation
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.