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		<id>https://www.designingbuildings.co.uk/w/index.php?action=history&amp;feed=atom&amp;title=Wiest-Levy_method</id>
		<title>Wiest-Levy method - Revision history</title>
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		<updated>2026-06-07T04:11:32Z</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=Wiest-Levy_method&amp;diff=190957&amp;oldid=prev</id>
		<title>Designing Buildings at 10:10, 22 January 2021</title>
		<link rel="alternate" type="text/html" href="https://www.designingbuildings.co.uk/w/index.php?title=Wiest-Levy_method&amp;diff=190957&amp;oldid=prev"/>
				<updated>2021-01-22T10:10:00Z</updated>
		
		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: white; color:black;&quot;&gt;
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		&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 10:10, 22 January 2021&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;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;= Introduction =&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;= Introduction =&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;The Wiest-Levy method is a critical path method (CPM) based on the &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;scheduling &lt;/del&gt;of &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;activities which can be carried out using the resources available&lt;/del&gt;. CPM was developed by Morgan R Walker of the Engineering Services Division at Du Pont, and James E Kelley, who worked at Remington Rand. Walker and Kelly were interested in &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;solving the problem of &lt;/del&gt;improving scheduling techniques used in the construction of industrial plants&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;; it is based on a deterministic or exact duration of each task&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;The Wiest-Levy method is a critical path method (CPM) based on the &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;deterministic or exact duration &lt;/ins&gt;of &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;each task&lt;/ins&gt;. CPM was developed by Morgan R Walker of the Engineering Services Division at Du Pont, and James E Kelley, who worked at Remington Rand. Walker and Kelly were interested in improving scheduling techniques used in the construction of industrial plants.&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;&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;As a form of CPM, the &lt;/del&gt;Wiest-Levy method is &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;viewed as &lt;/del&gt;a practical approach to problem solving&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;. It &lt;/del&gt;can be applied to &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;business decision &lt;/del&gt;making. &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;In essence, the method &lt;/del&gt;sets out a way &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;to decide &lt;/del&gt;which jobs or activities involved in a complex project are &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;designated as &lt;/del&gt;higher &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;priorities &lt;/del&gt;(or critical) based on their overall impact. It also attempts to devise the ideal &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;scheduling method &lt;/del&gt;for all jobs and resources required &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;in order &lt;/del&gt;to meet time and budget targets.&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 &lt;/ins&gt;Wiest-Levy method is a practical approach to problem solving &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;that &lt;/ins&gt;can be applied to &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;ecision &lt;/ins&gt;making. &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;It &lt;/ins&gt;sets out a way &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;of deciding &lt;/ins&gt;which jobs or activities involved in a complex project are higher &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;priority &lt;/ins&gt;(or critical) based on their overall impact. It also attempts to devise the ideal &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;schedule &lt;/ins&gt;for all jobs and resources required to meet time and budget targets.&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;= History =&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;= History =&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;Named after the American academics, Jerome D Wiest and Ferdinand K Levy, the Wiest-Levy method was introduced in the mid-1960s. A third collaborator, Gerald L Thompson was also involved in the development of this &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;simplified &lt;/del&gt;technique used to analyse, plan and schedule large, complex projects &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;based on critical priorities&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;Named after the American academics, Jerome D Wiest and Ferdinand K Levy, the Wiest-Levy method was introduced in the mid-1960s. A third collaborator, Gerald L Thompson was also involved in the development of this technique used to analyse, plan and schedule large, complex projects.&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;When applied to resource allocation and other aspects of project management in construction, this method helps to &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;plan &lt;/del&gt;the sequence of activities &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;so they can be carried out using the resources available. However, when the load is greater than the available resource, the activity will have to be delayed&lt;/del&gt;. &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;To address resource availability, &lt;/del&gt;Wiest created a concept called SPAR (Scheduling Program for Allocating Resources) which can be used for scheduling projects that have limited resources.&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;When applied to resource allocation and other aspects of project management in construction, this method helps to &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;optimise &lt;/ins&gt;the sequence of activities. Wiest created a concept called SPAR (Scheduling Program for Allocating Resources) which can be used for scheduling projects that have limited resources.&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;In the case of non-critical activities, the one that solves the problem with the least delay is chosen. If there are two activities with the same conditions, the one with the greatest leeway is delayed first, meaning that critical activities are only delayed when there is no other option.&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;In the case of non-critical activities, the one that solves the problem with the least delay is chosen. If there are two activities with the same conditions, the one with the greatest leeway is delayed first, meaning that critical activities are only delayed when there is no other option.&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;For more information see: Critical path method.&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;= Related articles on Designing Buildings Wiki =&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;= Related articles on Designing Buildings Wiki =&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=Wiest-Levy_method&amp;diff=190859&amp;oldid=prev</id>
		<title>Editor: Created page with &quot;= Introduction =  The Wiest-Levy method is a critical path method (CPM) based on the scheduling of activities which can be carried out using the resources available. CPM was deve...&quot;</title>
		<link rel="alternate" type="text/html" href="https://www.designingbuildings.co.uk/w/index.php?title=Wiest-Levy_method&amp;diff=190859&amp;oldid=prev"/>
				<updated>2021-01-21T20:04:33Z</updated>
		
		<summary type="html">&lt;p&gt;Created page with &amp;quot;= Introduction =  The Wiest-Levy method is a critical path method (CPM) based on the scheduling of activities which can be carried out using the resources available. CPM was deve...&amp;quot;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;= Introduction =&lt;br /&gt;
&lt;br /&gt;
The Wiest-Levy method is a critical path method (CPM) based on the scheduling of activities which can be carried out using the resources available. CPM was developed by Morgan R Walker of the Engineering Services Division at Du Pont, and James E Kelley, who worked at Remington Rand. Walker and Kelly were interested in solving the problem of improving scheduling techniques used in the construction of industrial plants; it is based on a deterministic or exact duration of each task.&lt;br /&gt;
&lt;br /&gt;
As a form of CPM, the Wiest-Levy method is viewed as a practical approach to problem solving. It can be applied to business decision making. In essence, the method sets out a way to decide which jobs or activities involved in a complex project are designated as higher priorities (or critical) based on their overall impact. It also attempts to devise the ideal scheduling method for all jobs and resources required in order to meet time and budget targets.&lt;br /&gt;
&lt;br /&gt;
= History =&lt;br /&gt;
&lt;br /&gt;
Named after the American academics, Jerome D Wiest and Ferdinand K Levy, the Wiest-Levy method was introduced in the mid-1960s. A third collaborator, Gerald L Thompson was also involved in the development of this simplified technique used to analyse, plan and schedule large, complex projects based on critical priorities.&lt;br /&gt;
&lt;br /&gt;
When applied to resource allocation and other aspects of project management in construction, this method helps to plan the sequence of activities so they can be carried out using the resources available. However, when the load is greater than the available resource, the activity will have to be delayed. To address resource availability, Wiest created a concept called SPAR (Scheduling Program for Allocating Resources) which can be used for scheduling projects that have limited resources.&lt;br /&gt;
&lt;br /&gt;
In the case of non-critical activities, the one that solves the problem with the least delay is chosen. If there are two activities with the same conditions, the one with the greatest leeway is delayed first, meaning that critical activities are only delayed when there is no other option.&lt;br /&gt;
&lt;br /&gt;
= Related articles on Designing Buildings Wiki =&lt;br /&gt;
&lt;br /&gt;
* Critical path method CPM.&lt;br /&gt;
* Progress of construction works.&lt;br /&gt;
* Resource leveling.&lt;br /&gt;
* Resource allocation in design and construction.&lt;br /&gt;
* Scheduling construction activities.&lt;br /&gt;
&lt;br /&gt;
= External resources =&lt;br /&gt;
&lt;br /&gt;
* F K Levy, G L Thompson and J D Wiest, Harvard Business Review, [https://hbr.org/1963/09/the-abcs-of-the-critical-path-method The ABCs of the Critical Path Method] (September 1963).&lt;br /&gt;
&lt;br /&gt;
[[Category:DCN_Definition]] [[Category:DCN_Guidance]] [[Category:Theory]] [[Category:Construction_management]] [[Category:Cost_/_business_planning]]&lt;/div&gt;</summary>
		<author><name>Editor</name></author>	</entry>

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