<?xml version="1.0" encoding="UTF-8" standalone="no"?><image-reference id="_8973bd81-f766-418a-91d5-b653ffe5bdff" variation="NT"><num>10.7.1u</num><title id="_65d6ca9c-683a-4be9-8ee6-2d72675d037a">Ducts or other construction separating soil and waste pipes from units — plasterboard to achieve R<sub id="_b7fe25ab-fba5-44d2-a0ce-a925fa68be37">W</sub> of 30 (method 2)</title><image alt="Ducts or other construction separating soil and waste pipes from units — plasterboard to achieve RW of 30 (method 2)" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/10-7-1u-ducts-or-other-construction-plasterboard-rw-30-2-NT.svg"/><desc-note id="_29cbfaaa-b29d-408a-ab7d-ec5a51834bb4"><p>2 layers of plasterboard each 13 mm thick, one on each side of steel studs not less than 50 mm deep and spaced at not more than 400 mm centres.</p></desc-note></image-reference>