Comprehensive Guide to Understanding Clause 13.3 Variation Procedure [FIDIC Yellow Book 1999]
Variation Procedure Overview
The Variation provisions in Sub-Clauses 13.1 and 13.3 allow for a Variation to be initiated either by a request to the Contractor to submit a proposal or by an instruction. Sub-Clause 13.3 specifically outlines the procedure and related requirements for Variations. The first two paragraphs of this Sub-Clause pertain to proposals submitted in response to a request, the third paragraph relates to instructions, and the final paragraph establishes the basis for valuing the Variation.
- Request for a Proposal: Sub-Clause 13.1 in the FIDIC forms empowers the contract administrator to explore the feasibility of a Variation by requesting the Contractor to submit a proposal.