Examination of Deflection and Cracking in Classroom 1A’s Concrete Structures: a Case Study and Retrofit Approaches. Journal of Research and Inovation in Civil Engineering as Applied Science (RIGID), [S. l.], v. 5, n. 1, p. 17–28, 2026. DOI: 10.58466/05d66b02. Disponível em: https://jurnal.politap.ac.id/index.php/rigid/article/view/1936. Acesso em: 2 feb. 2026.