Experimental and numerical investigation of vibrations induced by manual demolition work in masonry buildings

Manual demolition activities in urban environments can generate significant vibrations that propagate to neighboring buildings, potentially affecting occupant comfort and structural integrity, yet limited research exists on vibrations induced by hand-operated demolition tools. This study investigates the dynamic response of a three-story masonry residential building subjected to vibrations from manual demolition work using different tools (small hammer, large hammer, pneumatic hammer, and circular saw). Experimental measurements were conducted using piezoelectric accelerometers positioned across three building levels, while a three-dimensional finite element model was developed in SAP2000 and calibrated against experimental data through modal analysis. The experimental campaign identified dominant vibration frequencies between 11 and 14 Hz, corresponding to the first six structural modes of the building. An accurate Finite Element Model is calibrated on the experimental results. The validated numerical procedure, calibrated through experimental modal data, enables the assessment of vibration levels induced by manual demolition activities and facilitates parametric studies for different scenarios, providing a practical tool for structural engineers.