Getting energy-efficient design into school construction can be tough, but the Gen7 modular-classroom building from American Modular Systems, Manteca, Calif., fits many of the latest energy-efficiency advances into one package, bringing the cutting edge of green technologies to modular school construction. Photo: American Modular Systems Gen7 modular classrooms are showcases of sustainable technologies. Introduced at the Green California Schools Summit 2009 in Pasadena, Calif., in December, Gen7 is being touted as a “grid-neutral” modular-classroom solution for California school districts. “Gen7 is a loaded model, with every possible option,” says Tony Sarich, vice president of operations for AMS. “It’s not the
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.