Best Practices in Design-Build Contracting for Highway Projects in Texas

摘要

The 'Turn Key Construction' project involves the development of a statistically211u001ebased specification for the procurement of low volume highway projects using the 211u001eDesign-Build (DB) methods of contracting. This project takes the current DB 211u001eprocurement techniques to a point which will permit contract awards on a lowest 211u001eand best bid basis. This is possible due to the relatively simple nature of 211u001ehighway design (as opposed to building design). TxDOT has done extensive research 211u001einto pavement life cycle cost and its relationship to pavement design parameters. 211u001eFPS-19 permits the Department to evaluate proposed designs against the standard 211u001eof the design generated by FPS-19. It also allows evaluation on expected life 211u001ecycle maintenance costs of proposed designs using the FPS-19 algorithm and an 211u001eadaptation of utility theory. Finally, because of the large body of pavement 211u001eperformance data available through TxDOT, the project is able to produce a 211u001estatistically based specification for the delivery of a DB project without the 211u001eneed for guarantees or warranties.