The new Red Book is the traditional form for civil engineering construction in which the Contractor constructs to the Employer's design. There is however provision for the Contractor to carry out design where specified. The form maintains the role of the Engineer and the payment mechanism is based on measure and value. The new Red Book revises the previous Red Book version and incorporates current thinking on the management of contracts.
The new Yellow Book replaces the existing Yellow and Orange Books. It is intended to be used for Design and Build contracts and for Plant Contracts. The Engineer administers the contract and payment is on periods or installments of the Lump Sum.
The Green Book is an entirely new FIDIC form and adopts the overall risk philosophy of the Red and Yellow Books. It is intended for contracts of low capital value or simple contracts of short duration such as dredging works. There is no Engineer and the payment mechanism is required to be specified in the Appendix to the Form of Agreement, but payment is at monthly intervals.
The new Silver Book is an entirely new FIDIC form for BOT and similar projects. It is intended to be used on fixed-price turn key projects. There is no Engineer, instead the Employer deals directly with the Contractor. Risk is placed largely with the Contractor. Payment is on periods or installments of the Lump Sum.
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