<?xml version="1.0" encoding="UTF-8" standalone="no"?><image-reference id="_422814a7-8236-4d1e-8929-6bdf3feacaa1" variation="NT"><num>10.7.1c</num><title id="_25fe4600-9217-44d7-97eb-f57208f8afac">Construction of walls to reduce impact sound and achieve a 50 R<sub id="_43a76c4e-e867-49b1-948d-3b93362a08e8">W</sub>: single leaf brickwork</title><image alt="Construction of walls to reduce impact sound and achieve a 50 RW: single leaf brickwork." href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/10-7-1c-construction-of-walls-50-rw-single-leaf-brickwork-NT.svg"/><desc-note id="_56863faf-74e3-44e3-8c44-b5a7bea39e27"><p>80 mm thick brick masonry with—</p><ol outputclass="alpha"><li id="_6c8a8601-4760-482b-843b-50e1e4c7a0c7">each face rendered 13 mm thick; and</li><li id="_82e7c8ff-a89d-47e4-8527-2964c41b191f">50 mm x 12 mm thick timber battens at not more than 610 mm centres fixed to each face but not recessed into the render; and</li><li id="_81296d03-379b-4a5d-b4fb-d4fa7a4ace66">one layer of 12 mm thick softboard nailed to the battens; and</li><li id="_3006cf01-6e67-465b-8895-2bc412dd1048">6 mm thick medium density hardboard adhesive-fixed into the softboard.</li></ol></desc-note></image-reference>