Los Angeles Unified School District is once again wrestling with its construction contracting and project delivery procedures. LAUSD canceled a pair of contracts in its $19.2-billion construction program in November when the LAUSD board citied violation of a no-subcontractor rule. Photo: Michael Goodman for ENR Littmann, ENR 2003 Award of Excellence winner for contracting reform in L.A. Schools construction, believes the LAUSD has reverted to bad habits of the past. One contract was for $3.7 million to Consilia LLC for construction planning and the other for $90,000 to Kathi Littmann, former LAUSD chief of school construction for education specifications work.
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.