Permitted Variations for building elements Subject to AS 1530.4 and AS 4072.1
|
AS 1530.4 (Formal Opinion-Assessment is not required) |
AS 4072.1 (Need Formal Opinion-Assessment) |
| For Separation Element | For Separation Element |
| Results from concrete or masonry elements applies to same materials within +/- 15% density | Masonry and concrete construction
– When specimen during testing fails insulation criteria on separating element, it can be calculated and increased the thickness of separating element through an opinion of registered testing authority |
| Results obtained from framed walls applies to
· Concrete · Masonry · Solid gypsum blocks |
Framed Wall
– Results obtained from framed wall from one proprietary brand can be utilized for another proprietary brand through an opinion of registered testing authority |
| Results obtained from framed wall applies to similar wall construction with stud greater than tested wall | Prefabricated walls
– Results obtained from a pre-fabricate wall may be used to assess the performance of an alternative proprietary brands through an opinion of registered testing authority. |
| Results obtained from framed wall applies to same wall construction with thicker facing on with stud equal or greater to tested wall | Ceiling system and ceiling/roof/floor
– Results obtained with a suspended ceiling system of one proprietary brand may be used to assess the performance of an alternative proprietary brands through an opinion of registered testing authority. |
CYBIL CONSULTS utilises the permitted variations for building elements allowed as per AS 1530.4 without looking for written assessments from NATA approved laboratories.
