https://www.designingbuildings.co.uk/w/index.php?action=history&feed=atom&title=Noise_rating 2026-05-01T19:46:37Z Revision history for this page on the wiki MediaWiki 1.17.4 https://www.designingbuildings.co.uk/w/index.php?title=Noise_rating&diff=272065&oldid=prev 2024-03-11T06:32:39Z

<p></p> <table style="background-color: white; color:black;"> <col class='diff-marker' /> <col class='diff-content' /> <col class='diff-marker' /> <col class='diff-content' /> <tr valign='top'> <td colspan='2' style="background-color: white; color:black;">← Older revision</td> <td colspan='2' style="background-color: white; color:black;">Revision as of 06:32, 11 March 2024</td> </tr><tr><td colspan="2" class="diff-lineno">Line 1:</td> <td colspan="2" class="diff-lineno">Line 1:</td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>[https://www.bsria.com/uk/product/Bwxegr/useful_information_guide_bg_872024_a15d25e1/ BG 87/2024, Useful Information Guide], written by Chin Hang “Kay” Lam and published by BSRIA in 2024, defines noise rating (NR) as: ‘A criterion, often used in building specifications, for acceptable noise levels. A noise rating gives sound pressure levels (in decibels – dB) which must not be exceeded for a range of octave bands.’</div></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>[https://www.bsria.com/uk/product/Bwxegr/useful_information_guide_bg_872024_a15d25e1/ BG 87/2024, Useful Information Guide], written by Chin Hang “Kay” Lam and published by BSRIA in 2024, defines noise rating (NR) as: ‘A criterion, often used in building specifications, for acceptable noise levels. A noise rating gives sound pressure levels (in decibels – dB) which must not be exceeded for a range of octave bands.’</div></td></tr> <tr><td colspan="2">&#160;</td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;"></ins></div></td></tr> <tr><td colspan="2">&#160;</td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;">'Noise ratings are a means of specifying acceptable indoor noise levels. Each noise rating (NR) curve gives sound pressure levels which must not be exceeded for a range of octave bands. This acknowledges that higher-frequency sound is considered more intrusive than lower-frequency sound. The graph below shows the maximum allowable sound pressure levels at each octave band for each noise rating. It also illustrates that for NR30, the maximum is 40 dB at 250 Hz, 34 dB at 500 Hz, and 30 dB at 1,000 Hz. Typical noise ratings for a variety of spaces can be found in BG 85 (BG 85/2024 Mechanical Criteria).'</ins></div></td></tr> <tr><td colspan="2">&#160;</td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;"></ins></div></td></tr> <tr><td colspan="2">&#160;</td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;">[[File:Noise rating curves.jpg]]</ins></div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>--[[User:BSRIA|BSRIA]]</div></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>--[[User:BSRIA|BSRIA]]</div></td></tr> </table>

Designing Buildings https://www.designingbuildings.co.uk/w/index.php?title=Noise_rating&diff=272063&oldid=prev 2024-03-11T06:27:47Z

<p>Created page with &quot;[https://www.bsria.com/uk/product/Bwxegr/useful_information_guide_bg_872024_a15d25e1/ BG 87/2024, Useful Information Guide], written by Chin Hang “Kay” Lam and published by B...&quot;</p> <p><b>New page</b></p><div>[https://www.bsria.com/uk/product/Bwxegr/useful_information_guide_bg_872024_a15d25e1/ BG 87/2024, Useful Information Guide], written by Chin Hang “Kay” Lam and published by BSRIA in 2024, defines noise rating (NR) as: ‘A criterion, often used in building specifications, for acceptable noise levels. A noise rating gives sound pressure levels (in decibels – dB) which must not be exceeded for a range of octave bands.’<br /> <br /> --[[User:BSRIA|BSRIA]]<br /> <br /> = Related articles on Designing Buildings =<br /> <br /> * BSRIA articles.<br /> * BSRIA Blue Book.<br /> * BSRIA definitions.<br /> * BSRIA.<br /> * Building services engineer.<br /> * Building services.<br /> * New building services publications set to revolutionise design practices.<br /> * Noise.<br /> * Rules of Thumb - Guidelines for building services.<br /> * Sound.<br /> * Space and Weight Allowances BG84 2024.<br /> <br /> [[Category:DCN_Definition]] [[Category:Definitions]] [[Category:Standards_/_measurements]]</div>

Designing Buildings