Comprehensive structural strengthening works at Hôtel-Dieu de France, executed with advanced CFRP systems and high-performance repair techniques.

Client: HDF
Consultant: Eng. Maroun Abdel Ahad
Status: Completed on October 2019
Location: Achrafieh, Beirut
Scope of Work
The project aimed to enhance the load-bearing capacity of existing slabs and beams to accommodate upgraded usage requirements and additional imposed loads, all while ensuring uninterrupted hospital operations.
The structural strengthening works focused on improving the performance of reinforced concrete slabs and beams through advanced CFRP systems.
1. Structural Assessment & Preparation
- Detailed inspection of existing structural elements
- Identification of deficient zones
- Surface preparation to required roughness (CSP standards)
- Removal of weak or deteriorated concrete
2. Substrate Preparation
- Mechanical grinding and cleaning of concrete surfaces
- Ensuring proper bonding conditions for effective concrete repair
- Moisture and contamination control

Executing structural works inside a hospital environment required strict control measures and careful planning, especially when implementing CFRP systems for concrete repair and structural strengthening.
Main Constraints:
- Continuous hospital operation (no shutdown allowed)
- Presence of patients, medical staff, and sensitive equipment
- Restricted working hours and controlled access zones
- Noise and vibration limitations
- Dust control and hygiene requirements
Our Approach:
- Phased execution with clearly defined work zones
- Night and off-peak working schedules where required
- Use of low-noise and low-vibration equipment
- Full dust containment systems and protection barriers
- Continuous coordination with hospital management
The video highlights surface preparation, the installation of CFRP systems, including carbon fiber strips and laminates, and the application of high-performance epoxy systems for concrete repair. The process demonstrates precise execution in a controlled hospital environment, ensuring minimal disruption.
The final result showcases a fully strengthened system, enhancing the load capacity of slabs and beams with a lightweight and efficient solution for structural strengthening.