70 STRUCTURAL ELEMENTS
Wall Cavity Barrier (Red Edition) meets masonry construction challenge
I
n medium to high rise buildings where the external facade is masonry, brickwork may need structural support, typically steel support shelves, but this is often located where a cavity barrier should be positioned. Installing wall cavity barriers together with masonry support shelves without a detrimental eff ect on the building’s fi re safety can be a challenge. Now, testing shows this can be achieved with AIM – Acoustic & Insulation Manufacturing’s new Wall Cavity Barrier (Red Edition). Launched in summer 2024, AIM’s Wall Cavity
Barrier (Red Edition) is for use as a cavity barrier or cavity closer within the external wall structure of a building to prevent the passage of heat, fl ame and smoke within the cavity it fi lls for 30, 60 or 120-minute fi re rating periods. Due to its extended fi re rating, the Wall Cavity Barrier (Red Edition) is intended for use, both vertically and horizontally along fi re compartmentation lines, in medium to high rise buildings requiring
enhanced levels of fi re protection. In recognition of the challenge of installing
a barrier with masonry support shelves, the Wall Cavity Barrier (Red Edition) has been tested with a Leviat designed masonry support shelf indicative of an onerous situation and performed well with cavities up to 300mm. The test confi gurations were varied to represent varying levels of penetration of the masonry support bracket into the barrier. The tests confi rm that the Wall Cavity Barrier (Red Edition) gives up to 120 minutes EI (Integrity and Insulation). “The outcome of the testing is that our Wall
Cavity Barrier (Red Edition) may be fi tted at the top or bottom of the fl oor slab, with the masonry support shelf tested with a 50% to 140% penetration through the cavity barrier line. This gives the installer much more fl exibility in installing both the masonry support shelf and the cavity barrier,” explains AIM’s commercial director Ian Exall. The testing is in accordance with BS EN 1366-4:2021, recognised throughout the UK and EU as an appropriate resistance to fi re test standard for cavity barriers. Testing also included masonry and steel frame systems (SFS). AIM has also invested in third party certifi cation from UKAS accredited IFC Certifi cation Ltd in masonry activities. Wall Cavity Barrier (Red Edition) can be
HBD12_CPG Group : AIM_Structural Elements - Bricks &
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used to fi ll voids up to 600mm in masonry construction and has been tested in SFS construction and rainscreen cladding. Supplied in slab form for on-site cutting or cut to size, AIM’s Wall Cavity Barriers are available in 600 and 1200mm wide slabs in 75, 100 and 125mm thicknesses. They are often used in conjunction with AIM’s Open State Cavity Barriers (OSCBs). AIM provides technical, specifi cation, trainin g and on-site support. New Wall Cavity Barrier (Red Edition) technical literature, including fi xing instructions, can be downloaded at:
aimlimited.co.uk/solutions/wall-cavity-barrier/
01293 582400
www.aimlimited.co.uk Yorkshire’s Premier Reclamation Yard 03/12/2024 09:07
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HBD_newsletter_PR_Layout 1 27/02/2019 15:38 Page 1 Latest news, views andmore HBD12_Reclaimed Brick Company_Structural Elements - Bricks &
Blocks_PR.indd 1 13/12/2024 12:31
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