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    Greene Fire vertical fire curtains provide smoke and fire separation at Melbourne office

    Greene Fire

    Vertical fire curtains from Greene Fire were installed as part of a refurbishment at a multi-storeyed building housing the offices of Australian Super in Melbourne.

    Located on 50 Lonsdale Street, the office building was originally designed by John Wardle Architects, Hassell and NH Architecture in 2006, offering 66,000 square metres of Grade A office space over 33 levels. Australian Super’s office on five levels of the building was recently redesigned by Hassell Architects and fully refurbished by BUILT to meet their growing needs.

    Greene Fire FireMaster vertical fire curtains were specified as part of the pressurisation system for smoke and fire separation in the intertenancy stairs between levels 25 and 27 of the building.

    To meet the BCA objectives of no more than two storeys common, or no more than two interconnecting floors, a performance based solution using two separate fire curtains to enclose one stair was proposed for the three interconnecting stairs from level 25 through to level 27.

    Greene Fire supplied 21m long fire curtains to completely enclose both sides of the stairs, providing a large and airy open plan area for the occupants. The curtains remain invisibly retracted until activated by an alarm.

    In the event of a smoke or fire incident, the building occupants on the stair are required to exit via Level 25 or Level 26 and proceed to a fire isolated exit. A spilt drop delay function allows the curtains to deploy 2m from floor level (above head height) and hold in this position for 30 seconds, after which it continues to drop till it reaches the floor level to create a total fire barrier. Greene Fire’s solution was designed for the curtains to deploy within a maximum of 60 seconds before the pressurisation system started.

    The multi roller fire curtains are tested and assessed to AS1530.4 with an FRL of – / 120 / – fire resistance level.

    Greene Fire’s multi roller vertical curtains allow the 21m long curtains to have just two side guides that are carefully integrated within the fixed end walls. Key benefits also include the split drop delay functionality programmed into the fire curtains, which can be upgraded to include a light warning; curtain descent speed manually adjustable to suit the overall fire design requirements of the building; and single central control panel located in the fire cupboard next to the stairs allowing for easy localised testing of the curtains without needing access to the main FIP.

    Norman Disney and Young worked as fire engineers on the project.

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