Firth RibRaft® Floor System
- Abbreviation
- CMNZ70056 version 4
- Version
- 4
- Valid from
- 22/10/2024
- Information provider
- Ministry of Business, Innovation and Employment,
- Author
- Bureau Veritas Australia Pty Ltd
- Information type
- Product Certificate (CodeMark),
- Format
- PDF,
Description
The Firth RibRaft® Floor System comprises of polystyrene pods, steel reinforcing rods, plastic spacers and Firth RibRaft® concrete.
The Firth RibRaft® Floor System is a method of concrete floor construction, suitable for all slab-on-ground concrete floors for domestic or residential buildings that fall within the scope of NZS 3604:2011 Timber framed buildings.
Scope
Conditions and limitations of use:
1. The Firth RibRaft® Floor System shall only be used in buildings which fall within the scope of NZS 3604:2011 – Timber-framed buildings, located:
- a) Where the Seismic Hazard Factor Z (defined in NZ 1170.5:2004) is less than or equal to 0.45 (refer to Figure 6 of the Firth RibRaft® Technical Manual October 2024)
- b) in any wind zones up to and including Extra High
- c) in areas with snow loads up to 2.0 kPa
- d) in all exposure zones (except microclimates)
- e) and where the ground Ultimate Bearing Capacity exceeds the value specified in Table 2 for the types of construction in Table 1 of the Firth RibRaft® Technical Manual October 2024.
2. The Firth RibRaft® Floor System shall be designed and installed in accordance with the Firth RibRaft® Technical Manual October 2024.