Restauration du clocher,du porche et des couvertures de l'eglise notre-dame de la nativite a pontaubert

The contract starts on the date specified by a service order. The overall minimum duration for the execution of all services, in case of overlapping tranches, is 36 months.

Key phases and their provisional execution durations are:

• Firm Tranche: 7 months (including 4 weeks for preparation and 4 weeks for AOR, excluding holidays).
• Optional Tranche 1: 7 months (including 4 weeks for preparation and 4 weeks for AOR, excluding holidays).
• Optional Tranche 2: 7 months (including 4 weeks for preparation and 4 weeks for AOR, excluding holidays).
• Optional Tranche 3: 9 months (including 4 weeks for preparation and 4 weeks for AOR, excluding holidays).
• Optional Tranche 4: 6 months (including 4 weeks for preparation and 4 weeks for AOR, excluding holidays).

These durations commence from the date set by the service order initiating the execution of the respective tranche's services. The deadline for notifying service orders to begin optional tranches is 24 months from the start date of the firm tranche's execution. The contract is not renewable.

The core scope of work for this tender involves various restoration and installation activities, primarily divided into several optional tranches.

General Scope Categories (across tranches):

• Common Site Installations: This includes setting up the construction site with elements like bailiff's reports, site panels, base-camps, sanitary facilities, utility connections (water, electricity), and various protective measures such as barrier fencing, ground protection, and video surveillance systems.
• Instrumentation for Structural Monitoring: Involves the installation and bi-annual surveillance of Sauniac gauges, along with providing specific access means for these activities.
• Scaffolding Works: Encompasses the installation, monthly rental and maintenance, and dismantling of foot scaffolding, scaffolding on roofs, and access/lifting scaffolding (including supply scaffolding with hoists and stair scaffolding).
• Masonry - Cut Stone Works: Includes tasks such as purging cement joints, removing unsightly patches and exposed stone coatings, cleaning facades (including biocide treatment), injecting consolidation grout, performing surface treatments with high-pressure water, conducting works on cut stone facades (including dismantling and re-installation), and specific treatments for drains and the installation of hard limestone pavers and cast iron sidewalk gargoyles.
• Sculpture Restoration Works: Focuses on the restoration of architectural sculptures like capitals and sculpted corbels.
• Carpentry Works: Involves conducting a preliminary health assessment of existing carpentry, proposing intervention protocols, demolishing existing carpentry elements, and supplying new oak wood carpentry assembled using traditional methods.
• Roofing Works: Covers the reshuffling of canal tile roofing and the restoration of lead roofing, including peripheral gutters.
• Rainwater Evacuation Works: Deals with the installation or restoration of copper hanging gutters, rainwater downpipes, and cast iron dolphins.
• Miscellaneous Works: Includes tasks such as treating (dismantling and re-installing) guardrails, providing support for other trade lots (e.g., carpentry-roofing), carrying out controlled expenditure works (e.g., companion hours for research), and preparing a documentary file of the executed works.

Specific Deliverables and Scope by Optional Tranche:

• Tranche Optionnelle 1 - Clocher N+1 et N+2 (intérieur / extérieur): Focuses on scaffolding for the West facade and bell tower elevations, masonry work including joint purging, cleaning, grout injection, and cut stone repair for the bell tower's exterior, and restoration of 25 capitals.
• Tranche Optionnelle 2 - Premières travées des bas-côtés, de la tourelle d'angle et assainissement: Involves scaffolding for the first bays of the aisles and corner turret, masonry work including joint purging, cleaning, grout injection, and surface treatment for these areas, treatment of the North drain, installation of sidewalk gargoyles, restoration of sculpted corbels, and carpentry, roofing, and rainwater evacuation works for the first bays of the North and South aisles, and restoration of the metal door of the turret.
• Tranche Optionnelle 3 - Les travées 2 à 4 des bas-côtés et les chapelles collatérales: Mentions common site installations and preliminary health assessment and cleaning for carpentry works.
• Tranche Optionnelle 4 - Abside, porche et sacristie: Only the title is provided without explicit detailed tasks in the documents.