Contract Users' Newsletter Issue Number 2

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Contract Users’ Newsletter ISSUE 2 June/ July 2019

Published by the International Federation of Consulting Engineers (FIDIC)

www.fidic.org

FIDIC launches new tunnelling contract Major new contract launched for use in the tunnelling industry. FIDIC has teamed up with the International Tunnelling and Underground Space Association (ITAAITES) to publish a new form of contract for tunnelling and underground works, The Emerald Book. With underground construction a fast-growing market sector due to the increasing demand for use of underground space for infrastructure, the new Conditions of Contract for Underground Works (The Emerald Book ) is set to be widely used. Underground construction is highly dependent on the geological, hydrogeological and geotechnical properties of the ground, which have a defining influence on the methods required for the successful implementation of the works. In addition, the difficulty in predicting ground behaviour and foreseeable conditions implies an inherent uncertainty in underground construction which gives rise to unique contractual risks regarding construction practicability, time and cost. These risks are addressed in the new contract, which was launched in May following several years of intensive work

by a joint task group of representatives of FIDIC and ITA-AITES, who also identified several issues that the new contract should address to promote equitable risk allocation and the effective dealing with conditions typically unforeseeable in such projects. These issues include the following key areas: • Allocation of risk. • Disclosure of all available geological and geotechnical information. • Inclusion of a contractual geotechnical baseline. • Inclusion of a tailored “Unforeseeable Physical Conditions” clause. • Implementation of a ground classification system and of supporting particular conditions that properly reflect the effort of excavation and stabilisation. • Time for completion is largely influenced by ground conditions. • Provision of a flexible mechanism for remuneration according to ground conditions, foreseen and unforeseen.

Take-up of the new Emerald Book contract is expected to be widespread. FIDIC contracts committee chair Zoltán Záhonyi said: “Working together, FIDIC and ITA-AITES have created a contract that we believe, and hope will command the respect and authority of the tunnel engineering and construction sector and that both clients and contractors can use with confidence. The new Emerald Book addresses several critical areas that should lead to the smoother running of contracts in the growing tunnelling and underground works sector.”

FIDIC Asia Pacific Contract Users’ Conference Hong Kong, 25-27 June 2019

www.fidic.org


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