Fire Key Drivers

How Key Drivers impact fire risk scores, and the contribution values that indicate the impact, with examples.

Key Drivers

Key driver	Description
Criminal damage and arson risk	This property is located in a very low, low, medium or high risk area for criminal damage and arson
Likely presence of a firefighting shaft	Building regulation suggests that this property should contain a firefighting shaft with a firefighting lift, given its height
Likely presence of sprinklers	Building regulation suggests that this property should contain sprinklers, given its height
Tall office building	This property is (or is located within) an office building over 18m in height
Total business area	The total area used for business purposes is 1–25, 25–75, 75–200, or >200 sq. m
Room count	The total area used for business purposes is divided into 1–2, 3–9, or >=10 rooms
Average room size	The average size of rooms used for business purposes is 1–40, 40–100, or >100 sq. m
Mixed use property	This property contains both residential and commercial units
Property contains storage facilities	This property contains storage facilities which could be internal (e.g. supported storage floor) or external (e.g. shed)
Property contains a workshop	This property contains a workshop
Property contains a kitchen	This property contains a kitchen
Property includes a warehouse	This property contains a warehouse
Property contains public toilets	This property contains public toilets
Timber structure	The primary structural construction of this property is likely to be timber
Metal structure	The primary structural construction of this property is likely to be metal
Masonry structure	The primary structural construction of this property is likely to be masonry
Company failure risk	The company at this property has an above average, or very low risk of failure
Proportion of blue collar employees	The company at this property has a high proportion (at least 70%) of blue collar employees on site
Registered company	A registered company is located at this property
Chemical Manufacturing company	The company at this property is in the Chemical Manufacturing trade
Waste Collection company	The company at this property is in the Waste Collection trade
Waste Treatment company	The company at this property is in the Waste Treatment trade
Construction company	The company at this property is in the Construction trade
Motor Vehicle Retail company	The company at this property is in the Motor Vehicle Retail trade
Civil Engineering company	The company at this property is in the Civil Engineering trade
Hospital	This property is a hospital
Gambling site	The company at this property is in the Gambling trade
Sports venue	This property is a sports venue
Dormant company	A dormant company is located at this property
Previous fire	This property has previously experienced a fire
Adjacent previous fire	A different property or unit at this address has previously experienced a fire
Distance to fire station	The nearest fire station is <0.5km, 0.5–4km, or more than 4km away
Property usage hazard	The usage type of this property has a very low, low, moderate, high, or very high fire risk relative to other property usage types
Within residential	This address is contained within a residential property
Crime rate	The postcode of this property is in the top decile or lowest decile for crime
Education level	The postcode of this property is in the top decile or lowest decile for education
Sprinklers installed	This property has sprinklers installed

 

Contributions

A contribution measures the effect of the fire Key Driver on the risk score, relative to other drivers. The greater the magnitude of the contribution, the greater the effect the driver had on the risk score.

Each key driver has a value between -1 and 1:

• A negative contribution means the driver led to a lower (less risky) risk score
• A positive contribution means the driver led to a higher (more risky) risk score 

Key driver examples

Example 1

Key driver	Contribution
Waste treatment company	0.18232
Distance to fire station	-0.10536
Previous fire	0.09531
Education level	0.04879
Company failure risk	-0.05129

From the above, you can conclude that:

• The waste treatment trade has the greatest effect on the risk score as it has the highest contribution magnitude and increases the riskiness of the property
• Previous loss(es) and education level led to a higher (riskier) risk score as the contributions are positive
• The distance to the closest fire station and company failure risk led to a lower (less risky) risk score as the contribution is negative

Example 2

Key driver	Contribution
Property usage hazard	-0.10536
Commercial property has adjoining residential property	0.04879
Distance to fire station	0.02956
Room count	0.01980
Property contains a kitchen	0.01980

From the above, you can conclude that:

• Property hazard code has the greatest effect on the risk score as it has the highest contribution magnitude and reduces the riskiness of the property
• All the other driver values led to a higher (riskier) risk score as the contributions are positive