which FIDIC contract should the owner use...

We would like to inform you that FIDIC contract is a global standard for industrial consulting, developed over fifty years, and recognized and used globally by the judicial authorities, and is a reference for all types of projects, as the FIDIC acronym stands for the International Federation of Engineering Consultants (in French: Federation Internationale des Ingenieurs Conseils), where the terms of the contract were used by the International Federation of Pharmaceutical Industries, in addition to many international conditions for construction and civil engineering work, and all contractors must be aware of these conditions, and the FIDIC contract contains two parts; the first part talks with General conditions, while the second part includes the special application of these conditions.
The FIDIC contract for international engineering is distinguished by the fact that it possesses conditions of great importance, providing commitment to it and giving rights and responsibility towards the parties involved in the implementation of the contract. The International Federation of Consulting Engineers itself to classify management documents for all projects, and the first edition of the FIDIC contract for civil engineering and construction work was issued in 1957, and it was called the “Red Book”.