You may have seen them coming down Interstate 90, riding at about 45 mph with an Illinois State Police escort like visiting dignitaries. They are concrete beams, each measuring as much as 71/2 ...

In fact, beams, columns and other UHPC structural ... promise for advancing the capabilities of the precast, prestressed concrete industry. The performance characteristics of this material can ...

Theory of prestressed and post-tensioned members. Covers analysis and design of prestressed concrete beams, slabs, box girders, and bridge girders by elastic and ultimate strength methods. Precast and ...

Levan, a third-generation trucker, is pulling a 170-foot-long, 110-ton prestressed concrete beam destined to become part of the reconstructed Goethals Bridge, which links Elizabeth, N.J., and ...

Description: Principles of prestressed concrete. Prestressing systems, end anchorage, and loss of prestress. Analysis and design of sections for flexure, shear, bond ...

With the concept and advantages of prestressing defined, the course covers design and detailing of prestressed concrete beams to satisfy service (allowable stress) and strength requirements for ...

Teams of students and a faculty advisor design, build, and test a 20-ft., precast, prestressed concrete beam. Local PCI-certified precast concrete producers act as mentors to the teams.

But, it does increase the serviceability of concrete members by reducing the amount of deflection under load. This video explains the two most common types of prestressed concrete: pre-tensioned ...

Theory of prestressed and post-tensioned members. Covers analysis and design of prestressed concrete beams, slabs, box girders, and bridge girders by elastic and ultimate strength methods. Precast and ...

Prestressed concrete beams are scheduled to be delivered Monday and Tuesday mornings to the site of the new $4.2 million Columbia Street bridge in Schuylkill Haven.