Founded in 1947 by Joseph Jacobs, Jacobs is one of the largest and most diverse providers of technical, professional and construction services, including all aspects of architecture, engineering and construction (AEC), operations and maintenance, as well as scientific and specialty consulting. For 70 years, Jacobs has been the driving force behind some of world’s greatest engineering feats. Bought CH2M Hill in December 2017.
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Taking a chance on new technology takes guts. But Juan Alvidrez, president and owner of Plaza Construction, Denver, felt it was worth the risk to try self-consolidating concrete for his Broomfield, Colo., project. SCC is a highly fluid concrete that does not segregate. This is achieved by using a well graded aggregate to prevent segregation and high-range water reducers (a superplasticizer—typically one of the new polycarboxylates) to get the fluidity. This new kind of concrete has been used extensively in precast plants, but less often in the field. More