Strengthening of Timber Beam with Cold-Formed Steel Plates

This paper describes an experimental program which examined the flexural strengthening of timber beams (50x50x1000 mm) using cold-formed steel (CFS) plates (0.75 mm thick and 30 wide). A total fifteen specimens were tested in three-point bending scheme with a span-depth ratio 18:1. The effectiveness was evaluated for different lengths number layers. Test results showed that maximum load carrying capacity stiffness strengthened can be improved by up to around 70% 40%, respectively, relative control unstrengthened beams. increase percentage gain occurred as increasing length well Control demonstrated linear elastic behavior during test whereas tended undergo pseudo-ductile behavior. Along it tensile failure still observed