This AutoCAD drawing provides a detailed structure of an R.C.C. (Reinforced Cement Concrete) staircase designed in a single flight. It includes a clear plan and sectional elevation, along with detailed construction information for the tread and riser. This drawing is highly useful for architects, designers, and engineers who need precise specifications for designing staircases in residential, commercial, or industrial projects. The detailed CAD layout helps in understanding the structural integrity and material specifications, making it a valuable tool for construction planning and implementation.