Vertical Circulation.
Our Stair Calculator is a precision engineering tool designed to help architects and builders design safe, comfortable, and code-compliant staircases. It automatically verifies dimensions against the National Building Code (NBC) of India 2016 and the International Building Code (IBC), ensuring that your rise, run, and headroom meet all safety standards.
Parameters
Width Audit
Against Fire EXIT Requirements
Geometric Protocol
Warning
NBC 2016 (Public)
Comfort Index Analysis
What is Staircase Design & NBC Compliance?
NBC 2016 Staircase Requirements
The National Building Code (NBC) 2016 Part 4 Section 4.9 (Staircase) specifies strict dimensions for staircases based on building occupancy:
| Occupancy | Min. Width | Max. Riser | Min. Tread |
|---|---|---|---|
| Residential | 1000 mm | 190 mm | 250 mm |
| Assembly | 2000 mm | 150 mm | 300 mm |
| Institutional | 2000 mm | 150 mm | 300 mm |
Deep Dive: NBC 2025 Updates
New 2025 Amendments!
The "One Staircase" rule has been scrapped for many high-rise categories. Don't get caught with non-compliant core layouts.
Read the 2025 Guide →VASTU AI SUITE
SACRED GEOMETRY.
Audit your floor plans using our phase-3 16-zone Shakti Engine. Get real-time energy maps, scientific remedies, and detailed botanical suite recommendations.
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Shastra Citations
RAG-powered classical text verification
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How to Design a Code-Compliant Staircase
Calculate Rise, Run, and Headroom according to NBC 2016 standards.
Determine Total Rise
Calculate Number of Risers
Calculate Actual Riser Height
Determine Tread Depth
Check Headroom
Technical FAQ & Regulatory Compliance
1What is the 2R + T rule?
2What is the minimum headroom for a staircase?
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