The CPM-By-Calendar Algorithm

by John B. O'Shea,

Serial Information: Journal of the Construction Division, 1968, Vol. 94, Issue 2, Pg. 139-160

Document Type: Journal Paper


A new method of making critical path method (CPM) scheduling calculations is presented. Under this method the calculations are made directly in calendar-date form. Because of this the time of year at which a particular activity is to be scheduled is known during the calculation process and a reasonable adjustment for lost time due to bad weather can be made directly. The improved treatment of weather delays made possible by the calculation-by-calendar approach results in more accurate CPM simulations of construction projects.

Subject Headings: Critical path method | Algorithms | Scheduling | Construction methods | Project delay

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