Approved Document E
Approved Document E: Resistance to the Passage of Sound
This document specifies the acoustic performance requirements of ties suitable for use in separating walls (Type A ) and external walls (Type B) of new build dwellings.
Type A ties must have a measured dynamic stiffness of <4.8MN/m3 for the specified minimum cavity, at a standard density.
All Ancon ties which cross a cavity meet the requirements of Type B.
How the dynamic stiffness of wall ties is measured
The ends of six samples of each tie are cast into 100mm square concrete blocks, the blocks are suspended, one block excited and the frequency response measured. From these tests the mean dynamic stiffness is calculated for the specific cavity and multiplied by the tie density (usually 2.5 tie/m2). The results are shown in MN/m3.
As we all change the way we are working, Ancon has extended its technical services offering to include ‘on demand’ webinars enabling those of you practicing social distancing, while working at home or back in the office, to keep on top of your professional development.
Tuesday 23rd June 2020 is the globally celebrated International Women in Engineering Day (INWED). Ancon will be honouring its female engineers by getting to know some of them a little better and sharing their experiences with you.