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Wall Ties & Restraint Fixings

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.

Type A ties throughout the site are indicated by this logo e.g. Staifix HRT4, ACOU Acoustic Wall Tie Range.

Staifix HRT4
Staifix HRT4

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.

BIM Objects

CAD Drawings

Latest News

Christmas Shutdown 2016

The Ancon office will close at 12.30pm on Friday 23rd of December 2016 and re-open at 8.30am on Tuesday 3rd December 2017.

Jewson Live 2016

Ancon will be exhibiting at the UK’s largest builders’ merchant show, Jewson Live, 2016 at the National Exhibition Centre (NEC) in Birmingham on 15th December.