One of the most contentious aspects of the 1999 Yellow Book was the perceived erosion of the Engineer’s neutrality. In the 1999 edition, when determining claims, the Engineer was often viewed as acting on behalf of the Employer. The 2016 Blue Book attempts to correct this.
If your project involves a fixed, above-ground structure (like a bridge or building), use the . If it involves marine excavation, use the Blue Book . fidic blue book 2016 pdf