Engineer Anthony M. DiGioia, Jr., 74, is co-founder and former owner of engineering firm GAI Consultants and co-owner of DiGioia Gray Associates, both based in Pittsburgh. DiGioia was at the forefront of the then-emerging area of geotechnical engineering in the 1960s and GAI was one of the founding practices of the Association of Soil and Foundation Engineers in 1969. He is also well known for his work on transmission line foundations, as well as the utilization of coal combustion waste products, such as fly ash. Anthony M. DiGioia Jr. Three DiGioia sons followed their father into his profession: Matthew, a
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.