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		<id>https://www.designingbuildings.co.uk/w/index.php?action=history&amp;feed=atom&amp;title=Witnessing_authority</id>
		<title>Witnessing authority - Revision history</title>
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		<updated>2026-04-28T14:07:58Z</updated>
		<subtitle>Revision history for this page on the wiki</subtitle>
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	<entry>
		<id>https://www.designingbuildings.co.uk/w/index.php?title=Witnessing_authority&amp;diff=297613&amp;oldid=prev</id>
		<title>Designing Buildings at 07:21, 7 March 2025</title>
		<link rel="alternate" type="text/html" href="https://www.designingbuildings.co.uk/w/index.php?title=Witnessing_authority&amp;diff=297613&amp;oldid=prev"/>
				<updated>2025-03-07T07:21:10Z</updated>
		
		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: white; color:black;&quot;&gt;
			&lt;col class='diff-marker' /&gt;
			&lt;col class='diff-content' /&gt;
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			&lt;col class='diff-content' /&gt;
		&lt;tr valign='top'&gt;
		&lt;td colspan='2' style=&quot;background-color: white; color:black;&quot;&gt;← Older revision&lt;/td&gt;
		&lt;td colspan='2' style=&quot;background-color: white; color:black;&quot;&gt;Revision as of 07:21, 7 March 2025&lt;/td&gt;
		&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 2:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 2:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;It defines the witnessing authority for the purposes of the guide as: ‘The organisation or person appointed to witness the results of commissioning, and to verify that results obtained comply with the requirements of the design criteria and commissioning specification.’&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;It defines the witnessing authority for the purposes of the guide as: ‘The organisation or person appointed to witness the results of commissioning, and to verify that results obtained comply with the requirements of the design criteria and commissioning specification.’&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;background: #cfc; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;background: #cfc; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;See also: Witnessing.&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;--[[User:BSRIA|BSRIA]]&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;--[[User:BSRIA|BSRIA]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 19:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 21:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;* Mechanical ventilation.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;* Mechanical ventilation.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;* Pre-commissioning.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;* Pre-commissioning.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;background: #cfc; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;* Witnessing.&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;[[Category:DCN_Definition]] [[Category:DCN_Organisation]] [[Category:Definitions]] [[Category:Organisations]] [[Category:Roles_/_services]]&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;[[Category:DCN_Definition]] [[Category:DCN_Organisation]] [[Category:Definitions]] [[Category:Organisations]] [[Category:Roles_/_services]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Designing Buildings</name></author>	</entry>

	<entry>
		<id>https://www.designingbuildings.co.uk/w/index.php?title=Witnessing_authority&amp;diff=281186&amp;oldid=prev</id>
		<title>Editor at 04:58, 19 July 2024</title>
		<link rel="alternate" type="text/html" href="https://www.designingbuildings.co.uk/w/index.php?title=Witnessing_authority&amp;diff=281186&amp;oldid=prev"/>
				<updated>2024-07-19T04:58:52Z</updated>
		
		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: white; color:black;&quot;&gt;
			&lt;col class='diff-marker' /&gt;
			&lt;col class='diff-content' /&gt;
			&lt;col class='diff-marker' /&gt;
			&lt;col class='diff-content' /&gt;
		&lt;tr valign='top'&gt;
		&lt;td colspan='2' style=&quot;background-color: white; color:black;&quot;&gt;← Older revision&lt;/td&gt;
		&lt;td colspan='2' style=&quot;background-color: white; color:black;&quot;&gt;Revision as of 04:58, 19 July 2024&lt;/td&gt;
		&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;minus;&lt;/td&gt;&lt;td style=&quot;background: #ffa; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;[https://www.bsria.com/uk/product/&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;qB4YRr&lt;/del&gt;/&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;commissioning_air_systems_bg_492015_a15d25e1&lt;/del&gt;/ &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;Commissioning Air Systems (&lt;/del&gt;BG 49/&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;2015&lt;/del&gt;)&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;]&lt;/del&gt;, written by &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;Chris Parsloe &lt;/del&gt;and published by BSRIA in March &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;2015&lt;/del&gt;, explains how to commission ducted air distribution systems in buildings. It was originally published in 2013 &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;and was &lt;/del&gt;then &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;updated &lt;/del&gt;in &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;2015&lt;/del&gt;.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;background: #cfc; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;The BSRIA guide to 'Commissioning Air Systems' (&lt;/ins&gt;[https://www.bsria.com/uk/product/&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;rqJzen&lt;/ins&gt;/&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;commissioning_air_systems_bg_492024_a15d25e1&lt;/ins&gt;/ BG 49/&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;2024]&lt;/ins&gt;), written by &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;by Keith Barker &lt;/ins&gt;and published by BSRIA in March &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;2024&lt;/ins&gt;, explains how to commission ducted air distribution systems in buildings. It was originally published in 2013&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;, &lt;/ins&gt;then &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;2015 with the latest update &lt;/ins&gt;in &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;2024&lt;/ins&gt;.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;minus;&lt;/td&gt;&lt;td style=&quot;background: #ffa; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;It defines the witnessing authority for the purposes of the guide as: ‘The &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;firm &lt;/del&gt;or person &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;that may sometimes be &lt;/del&gt;appointed to witness the results of commissioning, and to verify that results obtained comply with the requirements of the design criteria and commissioning specification.’&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;background: #cfc; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;It defines the witnessing authority for the purposes of the guide as: ‘The &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;organisation &lt;/ins&gt;or person appointed to witness the results of commissioning, and to verify that results obtained comply with the requirements of the design criteria and commissioning specification.’&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;--[[User:BSRIA|BSRIA]]&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;--[[User:BSRIA|BSRIA]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Editor</name></author>	</entry>

	<entry>
		<id>https://www.designingbuildings.co.uk/w/index.php?title=Witnessing_authority&amp;diff=267682&amp;oldid=prev</id>
		<title>Designing Buildings: Created page with &quot;[https://www.bsria.com/uk/product/qB4YRr/commissioning_air_systems_bg_492015_a15d25e1/ Commissioning Air Systems (BG 49/2015)], written by Chris Parsloe and published by BSRIA in...&quot;</title>
		<link rel="alternate" type="text/html" href="https://www.designingbuildings.co.uk/w/index.php?title=Witnessing_authority&amp;diff=267682&amp;oldid=prev"/>
				<updated>2024-01-02T07:55:07Z</updated>
		
		<summary type="html">&lt;p&gt;Created page with &amp;quot;[https://www.bsria.com/uk/product/qB4YRr/commissioning_air_systems_bg_492015_a15d25e1/ Commissioning Air Systems (BG 49/2015)], written by Chris Parsloe and published by BSRIA in...&amp;quot;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;[https://www.bsria.com/uk/product/qB4YRr/commissioning_air_systems_bg_492015_a15d25e1/ Commissioning Air Systems (BG 49/2015)], written by Chris Parsloe and published by BSRIA in March 2015, explains how to commission ducted air distribution systems in buildings. It was originally published in 2013 and was then updated in 2015.&lt;br /&gt;
&lt;br /&gt;
It defines the witnessing authority for the purposes of the guide as: ‘The firm or person that may sometimes be appointed to witness the results of commissioning, and to verify that results obtained comply with the requirements of the design criteria and commissioning specification.’&lt;br /&gt;
&lt;br /&gt;
--[[User:BSRIA|BSRIA]]&lt;br /&gt;
&lt;br /&gt;
= Related articles on Designing Buildings =&lt;br /&gt;
&lt;br /&gt;
* Air conditioning.&lt;br /&gt;
* BSRIA articles.&lt;br /&gt;
* BSRIA definitions.&lt;br /&gt;
* Building services.&lt;br /&gt;
* Client commissioning.&lt;br /&gt;
* Commissioning building systems.&lt;br /&gt;
* Commissioning v testing.&lt;br /&gt;
* Commissioning.&lt;br /&gt;
* Ductwork.&lt;br /&gt;
* Flexible ductwork.&lt;br /&gt;
* Mechanical ventilation.&lt;br /&gt;
* Pre-commissioning.&lt;br /&gt;
&lt;br /&gt;
[[Category:DCN_Definition]] [[Category:DCN_Organisation]] [[Category:Definitions]] [[Category:Organisations]] [[Category:Roles_/_services]]&lt;/div&gt;</summary>
		<author><name>Designing Buildings</name></author>	</entry>

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