Abstract
Assessing the condition of existing building structures is essential for identifying material deterioration and potential safety risks. This study aims to evaluate the condition of concrete in the ground-floor columns of the Pasar Inpres Ruteng market building in Manggarai Regency, East Nusa Tenggara, Indonesia, using ultrasonic pulse velocity (UPV) testing combined with visual inspection. Tests were conducted using a GTJ-U910 device with a measurement path length of 300 mm at five documented test locations. The measured ultrasonic pulse velocities ranged from 2.102 to 2.201 km/s, with a mean of 2.138 km/s. Visual inspection also revealed damage to several columns, including concrete cover spalling and exposed reinforcement. The relatively low ultrasonic pulse velocities, together with physical damage to structural elements, indicate the need for further investigation into the condition and integrity of the concrete. The findings demonstrate that integrating UPV testing with visual inspection can provide useful preliminary information for prioritizing further assessments and safety mitigation measures in existing buildings.