1. Project & general
Concrete grade, steel grade and exposure drive cover, development/lap lengths and rates.
Staircase data entry
Enter the plan area (top view) available for the staircase and the storeys served. Risers, treads, flights, waist slab and landing are calculated (NBC: riser ≤ 190, tread ≥ 250, 2R+T 550–700 mm; IS 456 waist span/depth 20). Floor-level landings are part of the floor slab – enter them under Slabs.
Plan preview (top view, origin = bottom-left)
Rates (editable – defaults from your DSR 2021 estimate)
Result & IS code checks
Press “Calculate & check”.