Rooftop floating floor for 1 Broadgate

1 Broadgate

1 Broadgate

Following the success delivering floating floors for standby generators at 21 Moorfields, Mason UK were contacted again by Sir Robert McAlpine to design a similar floating floor system at 1 Broadgate.

1 Broadgate is a mixed use development in the heart of central London by Liverpool Street Station designed to provide accommodation for office, retail, leisure and restaurant businesses.

Working with SRM, acoustic consultants Sandy brown and Structural Engineers AKT, Mason UK designed a floating floor using a metal deck system suspended off the Mason Industries EAFM (Elastomeric Acoustic Floor Mounts)

The floating floor was located on the Level 13 roof. To avoid compromising the thermal design, the rooftop insulation layer could not be cut to install solid supports at isolator locations. To overcome this aspect a series of 20mm thick spreader plates were required to spread the load sufficiently.

Mason UK designed the floating floor system, specifying the plate sizes, isolator locations and rating to accept the generator point loads, weight of attenuators and enclosure. Mason Industries EAFM isolators were placed on the steel plates and shimmed level. Inverted galvanised steel channels were placed over the levelled isolators with the steel deck and perimeter angles screwed to the channels.

Once the angles and deck were in place, the reinforcing steel was laid, and concrete placed.

Steve Hart, Director at Mason UK supervised the installation undertaken by concrete frame Contractor AJ Morrisroe, attending site throughout the process performing a full QA on the installation.

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