Rising medical costs are driving up workers’ compensation costs despite the success of safety programs in reducing the frequency and severity of construction accidents. “There are a number of competing factors affecting rates,” says Mary Ann Krautheim, client strategy officer for Aon Risk Services’ Construction Services Group, Boston. Incident rates are dropping because of increased safety measures, as well as a drop in the labor force due to the recession. Lost-time payments are declining, but the cost of claims is rising. “Medical inflation is countering the positive trends,” Krautheim says. “So it’s a push-pull relationship.” Related Links: Competition Intensifies as
Arch dams, classically curved monoliths situated in narrow valleys, are not as common as other types of dams, such as embankment dams and gravity dams. ENR takes a look at some of the biggest arch dams in the world, both completed and under construction.