b'Fire Hazard PropertiesC1.10 Fire Hazard PropertiesFire hazard properties are material behavior indicators observed under specific fire test conditions.Material Group Number is an indicator of a materials fire hazard properties where Group 1 is the highest classification and Group 4being the poorest performing classification. The group number is used to identify where a material may be used in accordance withSpecification C1.10Internal and external wall and ceiling linings are subject to the requirements of Section 4 of Specification C1.10 and requirementsfor walls differ depending on if the building is protected by a sprinkler system as detailed in Table 3 of the specification.Spec C1.10 - Table 3 FIRE EXITS & Material Group Number asCONTROL ROOM PUBLIC CORRIDORS SPECIFIC AREA OTHER AREADetermined by AS 5637.1Building Class Wall/Ceiling Wall Ceiling Wall Ceiling Wall/CeilingsClass 2 OR 3*Unsprinklered 1 1,2 1,2 1,2,3 1,2,3 1,2,3Sprinklered 1 1,2,3 1,2,3 1,2,3 1,2,3 1,2,3*Class 3 or 9a accommodation for the aged, disabled, children and health care buildingsUnsprinklered 1 1 1 1,2 1,2 1,2,3Sprinklered 1 1,2 1,2 1,2,3 1,2,3 1,2,3Class 5,6,7,8 or 9b schoolsUnsprinklered 1 1,2 1,2 1,2,3 1,2 1,2,3Sprinklered 1 1,2,3 1,2,3 1,2,3 1,2,3 1,2,3Class 9b other than schoolsUnsprinklered 1 1 1 1,2 1,2 1,2,3Sprinklered 1 1,2 1,2 1,2,3 1,2,3 1,2,3Class 9cSprinklered 1 1,2 1,2 1,2,3 1,2,3 1,2,3Buildings not fitted with a sprinkler system complying with Specification E1.5 must also have:1. A Smoke Growth Rate Index not more than 100; or2. An Average Specific Extinction Area less than 250m2/kg.Group number and average specific extinction area may be determined in accordance with AS 5637.1. Generally, most hardwood timber products achieve a Group 3 classification and timber treated with fire retardants can achieve a Group 2 classification.Weathertex9|'