AN ARCHITECTURAL APPROACH COMBINING 3D SCANNING AND UNPUBLISHED ARCHIVES TO THE ANALYSIS OF A 19TH-CENTURY ENGINEERING STRUCTURE: CASE STUDY OF THE CHIFFA RAILWAY VIADUCT ALGERIA. IJITSS [Internet]. 2025 Feb. 14 [cited 2026 Mar. 17];(1(45). Available from: https://rspublisher.org/index.php/ijitss/article/view/3143