Spring 2008, King Saud University Time and Cost Control Dr. Khalid Al-Gahtani 1 Updating Construction Schedules Procedure: –Change the duration of all completed activities to zeros. –Identify all activities on which work is currently proceeding as live activities. –Put early start time of live activities equals the update time and their durations equal the remaining duration given by the update report. –Change durations of future activities as given in the update report. –Carry out network analysis in the normal way and prepare a new activity schedule.

Spring 2008, King Saud University Time and Cost Control Dr. Khalid Al-Gahtani 2 Example

Spring 2008, King Saud University Time and Cost Control Dr. Khalid Al-Gahtani 3 Example The position of the activities at the end of the fifth week is as follows: –Activities B, C, D and E have been completed. –Activity F is ready to start at beginning of week 6. –Remaining duration of activity H is 4 weeks. –Remaining duration of activity I is 3 weeks. –Activity G will not start until end of week 7. –Volume of work in activity L has been increased by 33% approximately. –Activity J has been omitted. –It is decided to shorten activity K by 2 weeks. Construct the updated schedule indicating the critical path and showing new activities times.

Spring 2008, King Saud University Time and Cost Control Dr. Khalid Al-Gahtani 4

Spring 2008, King Saud University Time and Cost Control Dr. Khalid Al-Gahtani 5 Work Breakdown Structure WBSWBS divides the project into recognizable systems (work packages, WP’s or Bid Packages) that responsible assignable work units, and for which accountability can be expected/assigned.

Spring 2008, King Saud University Time and Cost Control Dr. Khalid Al-Gahtani 6 Traditional A/E PDS

Spring 2008, King Saud University Time and Cost Control Dr. Khalid Al-Gahtani 7 Professional Construction Management

Spring 2008, King Saud University Time and Cost Control Dr. Khalid Al-Gahtani 8 Developing WPs Develop WBS –Identify WPs Draw a WPs Network

Spring 2008, King Saud University Time and Cost Control Dr. Khalid Al-Gahtani 9 Developing WPs Each WP must have –One Performing Agency (PA) such as Subcontractor –One Responsible Agency (RA) such owner’s Project Engineers Interconnection between Packages should be district and clear to facilitate coordination

Spring 2008, King Saud University Time and Cost Control Dr. Khalid Al-Gahtani 10 Developing WPs Bid a WP at the most short time so as to stimulate competition (Keep away uncertainty)

Spring 2008, King Saud University Time and Cost Control Dr. Khalid Al-Gahtani 11 Cost Coding System Cost Central level = Lowest level at which functional responsibility for individual WBS element exit. –XXX XXX XXX XXX An example: – A.00.cf34

Spring 2008, King Saud University Time and Cost Control Dr. Khalid Al-Gahtani 12 MASTERFORMAT system

Spring 2008, King Saud University Time and Cost Control Dr. Khalid Al-Gahtani 13 Cost Coding System Advantages of coding systems are: –Provide a numbering system to replace verbal descriptions of items. –These codes reduce the length or complexity of the information to be recorded. –aids consistency in definitions and categories between projects and among the various parties involved in a project. –aid in the retrieval of historical records of cost, productivity and duration on particular activities. –electronic data storage and retrieval operations are much more efficient with standard coding systems.

Spring 2008, King Saud University Time and Cost Control Dr. Khalid Al-Gahtani 14 Project Cost Control Budgeted Cost of Work Scheduled (BCWS) is the budgeted amount of cost of the work scheduled to be accomplished in a given time period (including support and allocated overhead). Budgeted Cost of Work Performed (BCWP) is the budgeted amount of cost for the work completed in a given time period, including support effort and allocated overhead. (This is sometimes referred to as “earned value of work accomplished”.) Actual Cost of Work Performed (ACWP) is the amount reported as actually expended in completing the particular work accomplished within a given time period.

Spring 2008, King Saud University Time and Cost Control Dr. Khalid Al-Gahtani 15 Type of performance

Spring 2008, King Saud University Time and Cost Control Dr. Khalid Al-Gahtani 16 Type of performance

Spring 2008, King Saud University Time and Cost Control Dr. Khalid Al-Gahtani 17 Type of performance

Spring 2008, King Saud University Time and Cost Control Dr. Khalid Al-Gahtani 18 Type of performance

Spring 2008, King Saud University Time and Cost Control Dr. Khalid Al-Gahtani 19 Cost Index

Spring 2008, King Saud University Time and Cost Control Dr. Khalid Al-Gahtani 20 Schedule Index

Spring 2008, King Saud University Time and Cost Control Dr. Khalid Al-Gahtani 21 Estimated Cost/Time At Completion

Spring 2008, King Saud University Time and Cost Control Dr. Khalid Al-Gahtani 22

Spring 2008, King Saud University Time and Cost Control Dr. Khalid Al-Gahtani 23 Project Example

Spring 2008, King Saud University Time and Cost Control Dr. Khalid Al-Gahtani 24 Project Example

Spring 2008, King Saud University Time and Cost Control Dr. Khalid Al-Gahtani 25 Project Example

Spring 2008, King Saud University Time and Cost Control Dr. Khalid Al-Gahtani 26 Project Example