An Update on Looped Cable Penetrations

In the 2018 GIB Fire Rated Systems Specification and Installation Manual, GIB Fire Soundseal was introduced — an improved formulation when compared with the previous GIB Soundseal which did not have verified fire-resistant properties.

Although the scope of application of GIB Fire Soundseal has been kept tight, and although covered by associated BRANZ Appraisal No.289 [2018], customers have asked for separate
clarification and verification. Many have also fairly pointed out that there is limited use for single electrical cable penetrations and that most surface-mounted fittings require looped wiring which means penetration by two electrical TPS cables.

The latest February 2020 release ‘Penetrations in GIB Fire Rated Systems’ covers the already published sprinkler pipe and single electrical cable penetrations and adds looped two or three core TPS cable penetrations on timber blocking. These penetration seals have now also been separately covered in BRANZ Technical Opinion FC12740-001 available by visiting branz.co.nz

For further information refer to the GIB website gib.co.nz/looped-cable-penetrations or call the GIB Helpline 0800 100 442.

GIB Fire Rated Systems

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The GIB Fire Rated Systems technical literature has been providing clear instructions on building protection from fire for many years.

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GIB Fire Rated Systems have been appraised for use as fire-rated load bearing and non-load bearing framed constructions elements in buildings.

NZBC Clause B2 Durability: Under normal conditions of dry internal use GIB Fire Rated Systems have a serviceable life in excess of 50 years and satisfy the requirements of NZBC Clause B2.
NZBC Clauses C1 – C6 Protection from Fire: GIB Fire Rated Systems can be used to provide passive fire protection in accordance with the requirements of NZBC Clauses C1 - C6.
NZBC Clause C6 Structural Stability: In order to satisfy the requirements of this clause, designers must ensure that fire rated elements are supported by elements having at least the same Fire Resistance Rating (FRR). Collapse of elements having a lesser FRR shall not cause the consequential collapse of elements required to have a higher FRR.
NZBC Clause G6 Airborne and Impact Sound: For many specifications in the technical literature Sound Transmission Class (STC) and Impact Insulation Class (IIC) performances are given. For higher performances, including those required by NZBC Clause G6, reference should be made to the current version of ‘GIB Noise Control Systems’.

All GIB unfinished plasterboard sheet materials achieve a Group 1-S interior fire rating to NZBC C/AS2-AS6, Table 4.1, following testing in accordance with ISO 5660.1 and ISO 5660.2.

BRANZ Appraised

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