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Independent Fire Safety Audit | Pan-India
Fire Compartmentation Audit Services in India
NBCS 2026 Table 6 compliant assessment of all passive fire protection elements — fire barriers, fire curtains, rated glazing, critical room enclosures, firestops and fire doors — across all building types and occupancies.
NBCS 2026 Table 6
IS 1641
IS 3809
BS EN 1366
NFPA 101
Since 2010
BEE Certified Engineers
Audits Completed
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Years Since 2010
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Cities Covered
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Independent — No Vendor Interest
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Overview
What is a Fire Compartmentation Audit?
Fire compartmentation is the division of a building into defined zones by fire-resistant barriers — walls, floors, ceilings, doors, curtains, and glazed assemblies — designed to contain fire and smoke within a limited area, allowing occupants to escape and limiting property damage.
A fire compartmentation audit is a systematic, independent inspection of all passive fire protection elements in a building. It verifies that compartment sizes comply with NBCS 2026 Table 6, that all fire-rated assemblies are correctly installed and undamaged, and that penetrations from services — cables, pipes, ducts — are properly fire-stopped.
Compartmentation is the most commonly compromised fire safety element in Indian buildings. Fit-outs, cable additions, partition changes, and renovation works routinely breach fire-rated walls and floors — often without occupants or facility managers being aware. A single unsealed cable penetration through a 2-hour fire wall can reduce its effective rating to zero in a real fire.
Elion Technologies & Consulting Pvt. Ltd. conducts independent fire compartmentation audits for commercial, industrial, institutional, and residential buildings across India, aligned with NBCS 2026 Table 6 — the most comprehensive compartmentation standard in Indian building history.
How Compartmentation Fails in Practice
- Unsealed cable and pipe penetrations through fire-rated walls
- Fire doors held open with wedges, chains, or magnets
- Fire door self-closers removed or disabled
- Intumescent seals missing, damaged, or painted over
- Partition walls not taken to structural soffit (gaps above false ceiling)
- False ceiling grilles creating open paths between compartments
- Fire-rated walls damaged during renovation — not reinstated
- HVAC duct penetrations without fire dampers
- Fire curtains and rated glazing not tested or certified
- Critical rooms (UPS, server, electrical) with non-rated construction
- New fit-outs creating larger compartments than permitted
- Raised floor voids connecting multiple compartments
NBCS 2026 — New Classification
Five Formal Fire Barrier Types under NBCS 2026
NBCS 2026 Part F Clause 4.5.2 formally classifies five fire barrier types for the first time in Indian building standards. NBC 2016 only recognised masonry and fire doors. Types B through E are entirely new formal classifications that open the door to modern passive fire protection technologies in India.
Group A
Masonry + Fire Door
Masonry + Fire Door
Traditional barrier
Group B
Fire Curtain
Fire Curtain
Fabric dropdown curtain
Fire-rated fabric curtain that descends on alarm. Three sub-types by Integrity (E), Radiation (EW), and Insulation (EI) ratings. Ideal for atriums and openings.
New
Group C
Rated Glazing
Rated Glazing
Fire-rated glass partition
New
Group D
Drylining
Drylining
Gypsum / cementitious board
Dry wall assembly using gypsum or fibre-cement board on steel frame. Light, fast to install, high fire rating. Common in IT and commercial fit-outs.
New
Group E
Sliding Door
Sliding Door
Masonry + sliding door
Masonry or concrete wall with fire-rated metal sliding door. Used in warehouses, industrial plants, and loading areas where swing doors are impractical.
New
NBCS 2026 Table 6
Maximum Compartment Sizes — NBCS 2026 Table 6
NBCS 2026 Table 6 specifies the maximum permitted compartment size for 13 building categories — with and without sprinklers. Exceeding these limits without approved compartmentation is a critical non-conformance.
| Building / Occupancy Type | Without Sprinkler | With Sprinkler |
|---|---|---|
| Enclosed basement car parking | 750 m² | 5,000 m² |
| Hospitals and nursing homes (Group C) | 750 m² | 2,000 m² |
| Custodial institutions – aged care / children (Group C) | 750 m² | 1,500 m² |
| Hotels – A-IV and A-V | 750 m² | 3,000 m² |
| Business buildings (Group E-I) | 750 m² | 3,000 m² |
| Datacentres (Group E-II) | Sprinkler mandatory | 2,000 m² |
| Mercantile – retail (Group F-I) | 750 m² | Not essential if sprinklered |
| Assembly with atrium | 1,500 m² | Not essential if sprinklered |
| Industrial – low / moderate hazard (<6.7 m height) | 1,500 m² | 10,000 m² |
| Industrial – high hazard (Group G-3) | Sprinkler mandatory | 500 m² |
| Warehouses – storage (<5 m height) | Sprinkler mandatory | 5,000 m² |
| Hazardous buildings (Group J) | Sprinkler mandatory | 500 m² |
| Underground shopping (Group F-II) | Sprinkler mandatory | 2,000 m² |
Critical Rooms — Always Required
Rooms That Must Always Be 2-Hour Fire Rated
Under NBCS 2026 Clause 4.5.3.2, the following rooms require 2-hour fire-rated enclosures regardless of building type, size, or whether sprinklers are installed. This is one of the most significant new rules — and one of the most commonly violated in practice.
Electrical Rooms & Switchgear Rooms
All main electrical rooms, HT/LT switchgear rooms, MCC panels and distribution boards serving critical loads
UPS Rooms & Battery Rooms
All UPS installations regardless of capacity; VRLA, lithium-ion, and flooded cell battery banks
Server Rooms & IT Equipment Rooms
Server rooms, data closets, and any room housing critical IT infrastructure or active network equipment
Network & Telecom Equipment Rooms
MDF rooms, IDF rooms, MCR rooms, MUX rooms, OFC splice rooms, and telecom equipment installations
Lift Machine Rooms
All lift machine rooms and lift pit areas where traction equipment, controllers, and ropes are located
Chemical & Hazardous Material Storage
All rooms storing flammable chemicals, solvents, cleaning agents, or other hazardous substances
Additional NBCS 2026 Rules
All live cooking areas (any fuel — induction, LPG, PNG) → 120-min fire-rated segregation (Cl. 4.5.3.6). Hotel guest room corridors → 60-min compartmentation with 30-min fire doors (Cl. 4.5.3.3). EV charging areas → compartmentation mandatory (Cl. 4.5.3.5). Pantries, buffet counters, and microwave stations → exempt from compartmentation (Cl. 4.5.3.7).
Audit Scope
What Elion's Fire Compartmentation Audit Covers
Our audit covers every passive fire protection element across the full building — from sub-basement to roof level.
Fire-Rated Walls & Floors
- Wall type and construction assessment (Type A–E)
- Rating verification against NBCS 2026 Table 6
- Compartment area measurement and compliance
- Wall continuity to structural soffit check
- Damage, penetration, and breach identification
- Mixed occupancy separation rating check
- Floor assembly integrity between levels
Fire Doors
- Door leaf and frame fire rating certification
- Intumescent seal and smoke seal condition
- Self-closer function and force check
- Hold-open device (magnetic) and alarm release
- Gap clearance — top, sides, and threshold
- Panic bar / lever handle function
- NBCS 2026 mandatory label verification
- Re-entry handle on stairwell fire doors
Firestop Seals
- Cable penetration seals — type, coverage, condition
- Pipe penetration seals — intumescent wraps / collars
- Duct penetration seals — fire dampers and collars
- Raised floor void compartment seals
- Ceiling void penetration seals
- Service trench and trough fire stopping
- Seal product suitability for substrate type
Fire Curtains & Rated Glazing
- Fire curtain type (B-1, B-2, B-3) verification
- Curtain deployment test and travel time
- Power failure — gravity deployment test
- Fire-rated glazing type and rating certificate
- Frame system integrity and seal condition
- Smoke seal (Sa) performance rating check
- Alarm activation to deployment interlock test
HVAC Fire Dampers
- Fire damper location at every wall penetration
- Damper rating vs wall rating compatibility
- Actuator function and closure test
- Access panel availability for maintenance
- Smoke damper vs fire damper differentiation
- Combination fire/smoke damper function test
- Fusible link condition and clearance
Critical Room Enclosures
- All mandatory 2-hour rooms identified and mapped
- Construction type and rating verified
- Door rating, self-closer, and intumescent seal check
- Penetrations and cable entries fire-stopped
- Cooking area 120-min separation compliance
- EV charging area compartmentation
- Hotel corridor 60-min compartmentation check
Methodology
Our Audit Process
1
Document Review
As-built drawings, fire compartmentation plans, fire door schedules, previous audit records
2
Floor-by-Floor Survey
Systematic physical inspection of every compartment boundary, fire door, and penetration point across all floors
3
Testing & Measurement
Fire door gap measurement, curtain deployment test, damper closure test, compartment area calculation
4
Gap Analysis
Findings mapped against NBCS 2026 Table 6, Clauses 4.5.2–4.5.3.7, IS 1641, IS 3809 and State bye-laws
5
Audit Report
Detailed report with photographic evidence, floor-wise compliance matrix, and priority-ranked rectification plan
Report Deliverables
What You Receive After the Audit
Every Elion NBCS 2026 fire safety audit concludes with a comprehensive, authority-ready documentation package.
Comprehensive Audit Report
Floor-by-floor findings against NBCS 2026 Table 6 with photographic evidence for every non-conformance — fire doors, firestops, barrier breaches, and critical room deficiencies
Compartmentation Compliance Matrix
All compartments rated Compliant / Non-Compliant / NA with risk classification — Critical / Major / Minor — by floor and zone
Priority-Ranked Rectification Plan
Recommendations ordered by risk priority — critical room enclosure failures and major barrier breaches first — with suggested products and methods
Fire Door Schedule
Tabular record of all fire doors inspected — location, required rating, installed rating, defect status, and remedial action required
Compartmentation Drawing Mark-up
Floor plan mark-up identifying breach locations, missing firestops, and oversized compartments for easy communication with contractors
Fire NOC Readiness Checklist
Compartmentation status against State fire authority requirements with documentation guidance for Fire NOC application or renewal
Why Elion
Why Choose Elion for Fire Compartmentation Audits
Truly Independent
No product or vendor interests. Elion does not supply or install passive fire protection products. Our recommendations are unbiased — you choose your own contractor for rectification.
NBCS 2026 Table 6 Expertise
Deep knowledge of all five barrier type classifications and critical room requirements introduced in NBCS 2026 — the most comprehensive compartmentation framework in Indian building standards.
30,000+ Audits Since 2010
Extensive cross-sector experience across commercial, healthcare, industrial, hospitality, and residential buildings — including complex multi-occupancy buildings with mixed compartmentation requirements.
Floor-Plan Mark-up Deliverable
Unlike text-only reports, Elion provides floor plan mark-ups that visually locate every breach, missing firestop, and oversized compartment — dramatically simplifying contractor briefing and remediation tracking.
Fire NOC Support
We compile compartmentation documentation required for Fire NOC applications and renewals, and provide a gap-closure plan aligned to your State fire authority’s specific requirements.
Pan-India Execution
In-house engineers across all major cities — Delhi, Mumbai, Bengaluru, Hyderabad, Chennai, Pune, Kolkata, Ahmedabad and more. No subcontracting. Single point accountability.
Frequently Asked Questions
Fire Compartmentation Audit — Common Questions
Technical and procedural questions from procurement, compliance, and facility management teams considering an independent engineering audit engagement.
What is a fire compartmentation audit?
A fire compartmentation audit is a systematic, independent inspection of all passive fire protection elements in a building — fire-rated walls, floors, ceilings, fire doors, fire curtains, fire-rated glazing, and firestop seals. It verifies that compartment sizes comply with NBCS 2026 Table 6, that all fire-rated assemblies are correctly installed, undamaged, and maintained, and that service penetrations are properly sealed.
What are the five barrier types under NBCS 2026?
NBCS 2026 Part F Clause 4.5.2 formally classifies five barrier types: Type A — masonry or concrete with fire-rated door; Type B — fire-rated fabric dropdown curtain (new); Type C — fire-rated glazed partition and door (new); Type D — gypsum or cementitious board drylining assembly (new); Type E — masonry or concrete with fire-rated metal sliding door (new). Types B through E are entirely new formal classifications absent from NBC 2016 Part 4.
What rooms always require 2-hour fire-rated enclosures under NBCS 2026?
Under NBCS 2026 Clause 4.5.3.2, these rooms require 2-hour fire-rated enclosures regardless of building type or size: electrical rooms, UPS rooms, battery rooms, server rooms, IT networking rooms, MDF/IDF rooms, lift machine rooms, network switch rooms, MCR rooms, MUX rooms, telecom equipment rooms, and chemical storage rooms. Additionally, all live cooking areas require 120-minute fire-rated segregation regardless of fuel type.
How often should a fire compartmentation audit be done?
Every one to two years for occupied buildings. Additional audits are essential after any fit-out, renovation, cabling work, or partition change — as these routinely breach fire-rated walls and floors without occupants knowing. Insurance policies increasingly require evidence of compartmentation integrity. Many fire authorities require compartmentation compliance as part of Fire NOC renewal inspections.
Is compartmentation more important than active fire systems?
Both are essential — but compartmentation is the layer that works even when active systems fail. A fire suppressed by sprinklers produces water and smoke damage over a wide area. Intact compartmentation limits that spread. More importantly, compartmentation protects escape routes — a breached staircase wall can fill a staircase with smoke in minutes, making evacuation impossible regardless of whether sprinklers are operating.
Get a Fire Compartmentation Audit Proposal
Share your building type, total area, and location. We will respond with a detailed proposal within 24 hours.