In mid-February, Glendale Water & Power awarded a $4.2-million contract to Greenville, S.C.-based Utility Partners of America Inc., as the Southern California city joined a nationwide move to so-called smart water and electric networks. The advanced metering infrastructure will act as a two-way communication network to connect the meter to the utility and to the customer. Utility Partners is the same company that won a $7.5-million contract for similar work in Sacramento, Calif., in November. It has installed an estimated 6 million meters across the country. The 33,400 new water and 84,500 electric meters UPA will install in Glendale will
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.