ACI 544.7R-16 PDF Download

ACI 544.7R-16 is a standard titled "Report on Design and Construction of Fiber-Reinforced Precast Concrete Tunnel Segments." The standard provides guidance on the design and construction of precast concrete tunnel segments that are reinforced with fibers instead of traditional reinforcing bars or welded wire mesh reinforcement.

The standard highlights the advantages of using fiber-reinforced concrete (FRC) segments, such as cost savings, reduced production time, improved post-cracking behavior, and better crack control characteristics. These FRC segments offer a more robust product with enhanced handling and long-term durability.

The document discusses the history of FRC precast segments used in tunneling projects around the world, providing valuable insights and lessons learned. It also presents a procedure for structural analysis and design, considering various load cases that govern the design.

Furthermore, the standard describes the material parameters, tests, and analyses necessary to complete the design process for fiber-reinforced precast concrete tunnel segments. These guidelines are based on experimental research, analytical work, and the experience gained from numerous FRC precast tunnel projects.