Timber iQ February - March 2017 // Issue: 30 | Page 63

CONTRIBUTORS
This dry-layered system offers the best chances for intervention in impact noise soundproofing .
Specifically , side transmission of impact noise through different structural paths is crucial to determinate the real behaviour of the building from an acoustical point of view . The vibration reduction index ( Ki , j ) can be determined by calculation according to EN 12354-1 or by experimental tests on real configuration of panels and connection . An appropriate acoustic design must refer to values calculable in advance and not on tests executed in retrospect on sight on isolated and unique cases .
The collaboration between Rotho Blaas and the University of Bologna represents a turning point in this field : an abacus of standard connection is provided as a powerful tool to assist designers in predicting the desired acoustic insulation .
Timber is one of the lightest materials and therefore one of the most sensitive to acoustic vibration at low frequency .
Attention to sealing , correct taping and the use of foam and expanding tapes are the ideal solution for airborne soundproofing in wooden houses .
Airtightness of timber buildings ( airtightness ) is strictly connected with soundproofing : airborne noise is the propagation of sound energy in the air through sound waves . For this reason , cure for details , attention to sealing , correct taping and use of foam and expanding tapes are the ideal solution for airborne soundproofing in wooden houses .
A compendium of soundproofing solution for a correct acoustic design of wooden structures is now available on Rothoblaas website .
Greenhouse Manufacture & Equipment Supply
Solar Drying Kilns available in 4m , 8m and 10m Width – 6 to 30m in Length . Size dependant on Cubic Timber needed to be dried . Manual and Automatic Controls available . Solar Kiln speciality design around customer requirement – Please contact us for a quote .
083 626 4612 021 903 0620 sales @ econoheatpty . co . za
Multispans • Tunnels • Solar Kilns • Service and Installation www . econoheatpty . co . za
// FEB / MARCH 2017 61