Additional Exemptions to Open Tendering (WTO-AGP only) 11.1 The following are exempt from the tendering or bidding procedures for procurement subject to WTO-AGP only: (a) when additional construction services which were not included in the initial contract but which were within the objectives of the original tender documentation have, through unforseeable circumstances, become necessary to complete the construction services described therein, and the contracting authority needs to award contracts for the additional construction services to the contractor carrying out the construction services concerned since the separation of the additional construction services from the initial contract would be difficult for technical or economic reasons and cause significant inconvenience to the contracting authority.
Toutefois, la valeur totale des marchés adjugés pour les services de construction additionnels ne peut pas dépasser 50 pour cent du montant du marché principal; b) pour de nouveaux services de construction consistant en la répétition de services de construction analogues qui sont conformes à un projet de base pour lequel un marché initial a été adjugé conformément aux dispositions correspondantes et pour lequel l'autorité contractante a indiqué dans l'avis de marché envisagé concernant le service de construction initial que la procédure d'appel d'offres limité pourrait être utilisée aux fins de l'adjudication des marchés pour ces nouveaux services de construction.