The , universally recognized as the White Book , is the international gold standard for professional consulting services in the engineering and construction sectors. Unlike construction contracts (like the Red or Yellow books), this agreement focuses on the intellectual output and relationship between a Client and their Consultant. Core Purpose and Versatility
In previous versions, a consultant's duty was often vague. The 2017 White Book sharpened this, requiring the consultant to exercise "reasonable skill, care and diligence" consistent with professionals on projects of "similar size, nature and complexity" The , universally recognized as the White Book