ACOUSTIC FLOORING | SPONSOR
PUTTING THE ‘SHHH’ IN THE SHARD | CMS DANSKIN
Distinctive, unconventional and controversial, the Shard is undoubtedly the work of a visionary. Find out how CMS Danskin Acoustics Ltd successfully soundproofed 42 of this structure’s most challenging floors.
When CMS Danskin Acoustics Limited was approached by Progressive Group to ensure the Shangri-La Hotel’s 42 floors in the Shard were effectively soundproofed, it wasn’t a straightforward assignment. From the very first sketches drawn on a napkin by visionary architect Rentzo Piano during dinner with entrepreneur and property developer Irvine Sellar, the Shard was always intended to be ‘all about the windows’, with expressive façades of angled glass reflecting sunlight and the
00 18
sky, and affording 360° views of the city.
Unfortunately, when the glazing is central to the design, floors can get in the way of the overall effect, and the temptation is to minimise floor heights (within Building Regulation parameters, of course). This presents a significant challenge to acoustic insulation installers. In short, the thinner the floor, the harder the soundproofing material has to work acoustically and the more physical punishment it has to endure.
For approximately 70% of the floors, Progressive group applied a Gyvlon liquid screed at a 40mm minimum thickness. The screed was pumped from ground level, with the largest pour in excess of 80m³ covering an area of 1,680m². In approximately 30% of the floor areas, however, the floor screeding level could not be raised because of the existing floor-level transom in the curtain walling. This meant that there were instances of screed thicknesses of approximately 25mm in places.
CMS Danskin’s Regupol E48 was specified, a high- performance screed isolation material. E48 was perfect for those ‘thin screed’ areas, with its maximum load bearing capacity of 3000kg/ m³ (30kN/m²), combined with a mean average impact sound insulation performance of 46dB and a mean average airborne sound insulation performance of 49dB, both values well in excess of the requirements of Part E of the Building Regulations.
Building Regulations aside, E48’s ‘over-performance’ is
www.tomorrowsflooring.com
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56 |
Page 57 |
Page 58 |
Page 59 |
Page 60 |
Page 61 |
Page 62 |
Page 63 |
Page 64 |
Page 65 |
Page 66 |
Page 67 |
Page 68 |
Page 69 |
Page 70 |
Page 71 |
Page 72 |
Page 73 |
Page 74 |
Page 75 |
Page 76 |
Page 77 |
Page 78 |
Page 79 |
Page 80 |
Page 81 |
Page 82 |
Page 83 |
Page 84 |
Page 85 |
Page 86 |
Page 87 |
Page 88 |
Page 89 |
Page 90 |
Page 91 |
Page 92 |
Page 93 |
Page 94 |
Page 95 |
Page 96 |
Page 97 |
Page 98 |
Page 99 |
Page 100 |
Page 101 |
Page 102 |
Page 103 |
Page 104
