Singh, Singasan, and P. C. Diwan. “Retrofitting of an Existing Box Type Culvert Using NDT and Analysis Tool Staad.Pro ”. International Journal of Scientific Research in Civil Engineering 3, no. 3 (June 15, 2019): 26–31. Accessed November 21, 2024. https://ijsrce.com/index.php/home/article/view/IJSRCE19335.