Farrar Corporation | 9 been critical to Farrar’s strategy for growth. And that’s not merely paid off for the company, but their customers as well. The benefits posed through working with Farrar has been particularly evident in projects that have included San Francico’s Bay Bridge as well as the Mike O’Callaghan–Pat Tillman Memorial Bridge, a 1,900 foot bridge spanning Hoover Dam (not to mention a 900 foot chasm) making it the seventh highest bridge in the world. In these projects, post tensioning systems were used to hold steel cable within the concrete to keep the structure compressed. This necessitated the use of up to 80-pound anchor heads and 40-pound bearing plates, each with a diameter of 15 inches. The anchor heads and bearing plates had to be cast in 80-55-06 ductile iron or Grade 3 ADI, whose properties make it as strong, or significantly stronger, than comparable steel while being easier to manufacture. In this instance, Farrar was not only a vendor of choice due to its ability to produce the components, but its ability to produce the material to the desired elevated specifications, all tested for soundness and certified through rigid quality assurance systems. Also, by being able to machine the castings
RkJQdWJsaXNoZXIy OTYzNTg=