The current experimental work deals with the response of intact and CFRP strengthened beams. The parameters such as strength and ductility are to be measured and compared between intact and retrofitted specimens. In this study six small-scale rectangular beams are tested under central concentrated loading. The scaling rule of construction preserves the physical similarity of the samples to the full-scale beams. The retrofit material is carbon fibre reinforced polymer (CFRP) in sheet form. The

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... RP sheets wrap the external surface of four beams in two orientation types, unidirectional (UD) and cross-ply. Based on the obtained results, the UD retrofit increases the shear strain of web at the failure moment, while the cross-ply retrofit increases the vertical strain rather than shear strain. The UD retrofit illustrates bending failure mode with local and deep flexural cracks, but the cross-ply retrofit causes simultaneous bending-shear failure with distribution of cracks in wider length.