<?xml version="1.0" encoding="UTF-8" standalone="no"?><image-reference id="_4a67307b-a61f-43af-bf18-51709dd3f625" variation="NT"><num>10.7.1g</num><title id="_4f56b2ba-0cdd-4120-9c22-76dbb6380572">Construction of walls to reduce impact sound and achieve a 50 R<sub id="_4145d8f1-50a3-4ede-a596-6f5d986ce260">W</sub>: steel stud walling (method 1)</title><image alt="Construction of walls to reduce impact sound and achieve a 50 RW: steel stud walling (method 1)" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/10-7-1g-construction-of-walls-50-rw-steel-stud-walling-1-NT.svg"/><desc-note id="_cf8f55f4-222f-445b-b3bb-1ddeade3450a"><p>64 mm staggered metal studs (0.75 mm base metal thickness) at 600 mm centres both sides, clipped in 92 mm metal tracks with—</p><ol outputclass="alpha"><li id="_e83bf9c2-b7e3-430f-8028-01b331776583">two layers of 13 mm fire-protective grade plasterboard to each side; and</li><li id="_efad8b39-9e8c-4f9e-9182-a52b9ef4402b">50 mm glass wool cavity batts.</li></ol></desc-note></image-reference>