Switzerland – Electrical installation work – Programme de Transition Ecologique - Etat de Genève - CO Drize - Appel d'Offres Consortium d'Entreprises et de Mandataires

As part of its ecological transition programme, the department of the territory, and more particularly the Office cantonal des bâtiments (also referred to hereinafter as "OCBA") is developing several operations to transform cantonal buildings. The CO Drize project concerns the complete renovation of the interior and exterior lighting installations of the building located at Route de Drize 8 in Carouge. The SIA 31 phase studies, carried out by AD Engineering, the electrical engineer appointed by the contracting authority, focused on the condition of the existing installations, the identification of luminaires, light levels, power balances, replacement principles, regulation and adaptation of the existing automation. The end of phase 31 dossier has been accepted by the contracting authority and serves as the basis for the development of the SIA 32 phase (see « 4 Electrical Engineer – end of phase 31 report)). The chosen solution provides for the replacement of approximately 2,855 luminaires out of 2,873 existing ones, mainly fluorescent and halogen, with LED luminaires. The project includes DALI regulation, the addition or adaptation of detectors and the reprogramming of the existing KNX installation. The principle sought is to retain as much of the existing infrastructure as possible – circuits, structures and false ceilings – while carrying out the necessary adaptations for a compliant, operable and maintainable work. The technical documents were initially prepared for separate tenders by trade. The OCBA has decided to entrust the entire operation to a consortium of contractors and companies, a single point of contact responsible for the complete implementation. The works to be carried out at the Drize Orientation Cycle (hereinafter also referred to as "the project" or "the contract"), which are the subject of this call for tenders, are as follows: · carrying out the SIA 32 phase studies (project of the work); · site installations, protections, access means and interventions at height; · dismantling of existing luminaires, supply, installation and adjustment of the new LED lighting; · electrical installations, emergency lighting, OIBT checks and adaptations of existing distributions; · building automation, KNX adaptation/reprogramming, DALI, detection and variation according to natural light input; · related works, remediation, false ceilings, plastering, painting, repairs and cleaning; · coordination of a partially occupied school site, carried out in phases and over several years – the works taking place mainly during the school holiday period.