Integration of a brick partition wall into a brick exterior wall

If sound insulation requirements for a partition wall are required, it must be integrated into an external wall with a low bulk density, otherwise the sound insulation of the partition wall will be significantly reduced by the outer wall as a flanking component (see Figure 1). The greatest possible sound insulation is achieved when the outer wall is completely interrupted by the partition wall, (see Figure 4):

1 2

3 4

1. Brick exterior wall
2. Backfilling
3. brick with flowable concrete
4. Backfilling with thermal insulation
5. Brick wall with high bulk density (soundproofing bricks)
6. Stainless anchors in the bearing joints

Source: bauwion