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Vibration control in a repurposed building

Corporate organisation

New York, USA

Office floor to lab conversion

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Project Overview Challenge The Solution The Result Testimonial

The Project

Following the recent refurbishment of an existing building, our customer’s building floors were repurposed from office space to a life science laboratory, which was a significant change of use. The floors, originally constructed using a composite steel-concrete system and spanning up to 15 metres, required adjustments to meet the requirements of this new use.

Our customer wanted to ensure vibrations were adequately managed, without any structural interventions, to a standard that would be commensurate with a high-performance lab environment.

Laboratory Vibration Control

The Challenge

Footfall analysis indicated the refurbished floor response (R) factors were around 11 at the highest hotspots, as shown in the contour plot (figure 1) shown above. To bring this value of vibration in a repurposed building to meet a much more stringent requirement and to make it suitable for lab use, vibration mitigation was required.

The customer’s specifications deemed traditional solutions, such as structural interventions and tuned mass dampers, impractical. The CALMFLOOR active mass damper (AMD) solution proved to be better suited to a repurposed building, given its swift deployment and simple installation process.

We set out to demonstrate that a conventional low-frequency floor could be transformed to accommodate the demands of a standard laboratory, which typically necessitates heavy, deep, short-span and high-frequency floors.

The Solution

CALMFLOOR’s innovative technology is designed to deliver seamless, transformative vibration control in repurposed buildings, in this case, office spaces into laboratories, with significant improvements in vibration performance.

Figure 2 below illustrates how 13 CALMFLOOR units (shown as purple diamonds) were strategically positioned across our customer’s floor to provide vibration control. It subsequently achieved a considerable reduction of almost 80% in response.

This installation of CALMFLOOR units demonstrated huge potential for realising substantial reductions in both cost and embodied carbon to achieve vibration control in repurposed buildings. Moreover, this elegant solution upgraded the floor’s vibration performance to stringent, lab-quality performance criteria.

The Result

Our customer’s installation of CALMFLOOR’s AMD technology proved beyond doubt to be a versatile vibration control solution that enhanced the vibration performance of the existing floors, enabling a highly effective conversion to a new use without any structural modifications.

The ease of deployment and fast-fit installation of CALMFLOOR units fulfilled the brief of meeting stringent vibration criteria for the repurposing of any floors. The 80% reduction in vibration responses has given our customer an efficient solution that not only upgrades vibration performance to meet lab-quality criteria, but also delivers substantial cost savings and environmental benefits.

Following a conversion from office space to a life science laboratory, CALMFLOOR delivered optimal vibration control to the repurposed building. A number of CALMFLOOR active mass damper (AMD) units were deployed to reduce the existing floor vibration response factor from 11 to comply with far more stringent, lab quality criteria.

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