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Canada Water
United Kingdom
Stravibase VHS
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A full Building Base Isolation (BBI) solution was required after the acoustical consultant's FINDWAVE modelling indicated a potential exceedance of the 35 dB LAmax(s) ground-borne noise limit set by the London Borough of Southwark’s “Technical Guidance for Noise” (Nov 2019).
CDM Stravitec collaborated with the structural engineer and main contractor to ensure all load cases - dead, live, serviceability, horizontal, fire, and accidental/disproportionate collapse - were addressed in the design.
By participating in the design and doing the installation of the solution, CDM Stravitec can guarantee its quality and performance.
The solution involved installing vibration isolation bearings on top of the pile caps, effectively decoupling the columns from the pile foundation.
CDM Stravitec implemented five-layer Stravibase VHS bearing assemblies, complete with fail-safes and shear dowels, to ensure optimal performance and durability.
Shear dowels housed in acoustic isolation sleeves were implemented to resist lateral loads. Additionally, failsafe measures were incorporated to preserve the void space in the unlikely event of a disproportionate collapse.
