<?xml version="1.0" encoding="UTF-8" standalone="no"?><image-reference id="_48e753c5-d6dd-43cd-8373-038798e6f3ee" variation="NT"><num>10.7.1f</num><title id="_238242d3-48b0-44d5-a1b3-299df04a47d8">Construction of walls to reduce impact sound and achieve a 50 R<sub id="_b94f8e45-5799-4d7b-86ee-db2879c72d4f">W</sub>: timber-framed walling (method 2)</title><image alt="Construction of walls to reduce impact sound and achieve a 50 RW: timber-framed walling (method 2)" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/10-7-1f-construction-of-walls-50-rw-timber-framed-walling-2-NT.svg"/><desc-note id="_3a0eeb70-37d5-452c-89c7-2d5493cbb17b"><p>70 mm x 45 mm F5 timber double studs at 450 mm - 600 mm centres with an air space not less than 20 mm between studs with two layers of 13 mm fire-protective grade plasterboard on both faces.</p></desc-note></image-reference>