Rhode Island has become the first state to adopt the new International Green Construction Code. The state has identified the IGCC as an “equivalent standard” to meet requirements that all new major facility projects by state agencies be constructed as green buildings. Sponsors of the IGCC standards include the American Institute of Architects, ASTM International, the American Society of Heating, Refrigerating and Air-Conditioning Engineers, the Green Building Council and the Illuminating Engineers Society. The new standards will take effect in Rhode Island this month.
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.