3D Staircase Detail Model with RCC Slab Riser and Landing Levels

This 3D staircase detail drawing illustrates a multi level stair structure designed for clear spatial coordination in residential and commercial buildings. The model shows straight flight staircases connected through intermediate landings with visible RCC slab thickness and floor plate alignment. Typical riser height is approximately 150 mm with tread depth near 300 mm ensuring comfortable vertical circulation. Structural columns beams and slab edges are accurately represented to explain load transfer and stair support conditions. Handrail placement stair width and landing clearances are clearly visible for construction reference. The 3D staircase detail AutoCAD file helps architects civil engineers and interior designers understand stair geometry elevation flow and vertical connectivity for precise design development.