DHIYAA, Ahmed; HADI, Ahmed; AHMED, Abeer; HASSAN, Maryam; SALIM, Noor; HADHER, Ghadah. Assessing the impact of excluded risks on cost and time of construction projects in Samarra using the relative importance index (RII). Samarra Journal of Engineering Science and Research, [S. l.], v. 3, n. 4, p. 1–19, 2026. DOI: 10.65115/x2q6mt60. Disponível em: https://journals.uosamarra.edu.iq/sjesr/article/view/150. Acesso em: 13 jun. 2026.