Overview

This project concerned the structural retrofitting of two existing three-storey buildings in Preveza, Greece, with a total floor area of 2,000 square meters. Originally constructed about 30 years ago, the buildings were upgraded to accommodate their conversion into a hotel.
Due to their proximity to the sea, visible signs of concrete carbonation and corrosion of longitudinal reinforcement and stirrups were observed. Thin balcony slabs were reinforced by increasing their thickness and adding additional compressive reinforcement.
Strengthening of primary structural members, beams and columns, was carried out using Fiber Reinforced Polymer (FRP) systems.
The structural analysis was based on Eurocodes 1, 2, and 8-3. A nonlinear structural analysis was performed in accordance with the Greek Code of Structural Interventions for the retrofitting of buildings, with the objective of achieving both bending and shear strengthening of beams and columns.
The software used included FESPA and proprietary SIKA software for FRP design.