The letter from Jeffrey B. Sodoma about safety conditions shown in a photo within ENR’s Year in Construction photo essay reflect how out of date OSHA regulations are. OSHA can only enforce the regulations that are in the applicable 29 CFR 1926 or 1910 standards. OSHA can enforce only laws that are written and/or interpreted by the legal system. Mr. Sodoma’s observation about the photograph showing individuals standing at the edge of a deep excavation is an example of how OSHA is behind the times in safety. The only section in 29 CFR 1926 Subpart P (Construction Safety Orders Excavation
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.