Fire Index — Configure Fire Safety Profiles & Golden Thread Mapping Rules

The Configure Fire Index & BSA Readiness interface allows fire safety officers, BIM managers, and principal designers to author, customize, and validate fire safety classification rules. It bridges heterogeneous BIM authoring conventions (Revit Shared Parameters, IFC Property Sets, dynamic JSON attributes) into a standardized, statutory Golden Thread dataset.

Configuration Overview

Configure Fire Index Profile Builder

Every project or iModel can bind to one or more Fire Safety Profiles. A profile establishes:

Target Statutory Gateway: Determines compliance stringency (GW2 Planning / Building Control approval or GW3 Pre-Occupation handover).
Regulatory Jurisdiction: Ruleset enforcement (e.g. UK_BSR, BS_8644-1:2022, EN_13501-2, HTM 05-02 Healthcare).
Target ECClasses: Selects geometric and spatial classes evaluated during extraction (e.g. bis.GeometricElement3d, architecturalphysical.door, revitdynamic.doors).
Property Discovery & Slot Mappings: Binds raw BIM property paths to canonical Golden Thread fields.
Validation Regex Rules: Enforces strict format validation for fire resistance ratings, integrity/insulation durations, and certificate identifiers.

Statutory Gateways and Jurisdiction Presets

The profile builder provides built-in statutory templates configured for the UK Building Safety Act:

Preset Profile	Target Gateway	Target Jurisdiction	Mandatory Requirements
UK BSA Golden Thread & BS 8644-1 Standard	`GW2` (Gateway 2)	`UK_BSR`	FireRating required on all fire doors, compartment partitions, and fire dampers; basic classification code required.
Pre-Occupation Handover (Gateway 3)	`GW3` (Gateway 3)	`UK_BSR`	Full Golden Thread provenance mandatory: Test Certificate Number, Third-party Certifier, Installer accreditation (e.g. FIRAS), and As-Built compartment zone.
European Performance Standard	`GW2`	`EN_13501-2`	EN classifications enforced (`EI 30`, `EI 60`, `REI 120`, `E 90`).
Healthcare Specialised Safety	`GW2`	`HTM_05_02`	Stricter smoke seal verification (`Sa` / `Sm`) and progressive horizontal evacuation compartment boundaries.

Dynamic Property Discovery

Different CAD/BIM authoring software stores fire safety attributes under diverse property schemas. The Schema Property Discovery Engine automatically queries the active iModel for available fire-relevant properties:

Revit Dynamic Properties:
- RevitDynamic.Doors_Single_Flush_FD60S → Fire_Rating, Fire_Resistance
- Parameter.Door_FireRating
IFC / OpenBIM Property Sets:
- Pset_DoorCommon.FireRating
- Pset_BuildingElementProxyCommon.FireResistanceRating
Custom Dynamic JSON Attributes:
- $->FIREie__x002E__Type__x002E__ResistanceToFireRequiredInsulation
- $->FIREie__x002E__Type__x002E__ResistanceToFireRequiredIntegrity

Users can search for properties across the model schema and click + Add to Profile to create a mapping slot.

Canonical Slot Mappings

Raw BIM properties are normalized into standardized canonical slots used by the Fire Breakdown Structure and 3D Viewport:

Canonical Slot	Data Type	Description	Example Target Values
`FIRE_RATING`	String	Overall fire resistance duration and rating code.	`FD30`, `FD60S`, `EI 60`, `REI 120`
`INTEGRITY_MINUTES`	Integer	Period in minutes component resists fire penetration (E).	`30`, `60`, `90`, `120`
`INSULATION_MINUTES`	Integer	Period in minutes thermal insulation is maintained (I).	`30`, `60`, `120`
`SMOKE_RATING`	String	Smoke containment performance (S or Sa / Sm).	`Sa`, `Sm`, `S`
`COMPARTMENT_ID`	String	Identifier of containing fire compartment or zone.	`C-01-CORRIDOR`, `FZ-LEVEL02-NORTH`
`BOUNDARY_ELEMENT`	Boolean	Declares whether element forms a compartment boundary wall or floor.	`TRUE`, `FALSE`
`CERTIFICATE_REF`	String	Test certification reference or Golden Thread identifier.	`CERTIFIRE-CF12345`, `BM-TRADA-5678`
`INSTALLER_ID`	String	Accredited contractor or installation sign-off identifier.	`FIRAS-REG-99120`

Regular Expression Validation Rules

Profiles allow defining custom regex patterns to detect malformed or ambiguous fire ratings:

{
  "sourceProperty": "FIREie__x002E__Type__x002E__ResistanceToFireRequiredInsulation",
  "propertyLabel": "Resistance To Fire Required Insulation",
  "targetCanonicalSlot": "FIRE_RATING",
  "requiredForGateway": true,
  "validationPattern": "^(FD\\s?(?:30|60|90|120)(?:S)?|(?:R)?EI\\s?\\d+|E\\s?\\d+|\\d+)quot;
}

Validation Outcomes:

Pass (COMPLIANT): Values like FD60S, EI 60, FD30, 120 are recognized and colored accurately in 3D.
Warning (invalid_fire_rating_format): Ambiguous text like "60 mins", "1 hour", "standard" triggers a quality issue in the register for authoring remediation.
Critical (missing_fire_rating): Fire doorsets or partitions with empty, blank, or TBC ratings are flagged as high-risk statutory violations.

Saving and Switching Profiles

Active Profile Selector: The upper-right profile selector in the top bar (UK BSA Golden Thread & BS 8644-1 Standard) allows switching profiles on the fly.
Persisted Configurations: All profiles are saved to the backend validation database via POST /api/fire/configs and isolated by iTwinId and project domain.
Instant Re-Evaluation: Selecting a different profile immediately recalculates compliance metrics across the browser tree and 3D heatmap without requiring a full re-harvest.