Responsibility of Nonworking Days in Analyzing Delay claims Khalid S. Al-Gahtani; Ibrahim A. Al-Sulaihi; Abdullah Alsehaimi Outline 2 Outline TFM Software An Illustrated Case Study Allocating Method for NWDs in Delay Analysis Delay Responsibility Associated with NWDs NWDs after the Project Due Date Delay Analysis Techniques 3 Many delay analysis techniques have been developed such as, but-for technique, window technique, and window but-for technique..etc. The analysis results by using different delay analysis techniques are vary in many cases. Delay Analysis Techniques 4 Case StudyAs-Planned CPM Schedule Delay Analysis Techniques 5 Case StudyAs-Built Bar Chart Schedule Delay Analysis Techniques 6 No.Delay Analysis Technique Project Delays ECNEEN 1Global Impact As-Planned (Gross of Measure)493 3As-Planned (Unite of Measure)483 4As-Built463 5Impacted As-Planned403 6Time Impact493 7But For (Gross of Measure)053 8But For (Unite of Measure)063 9Isolated Delay Time (IDT)69 10Window/Snapshot573 11Window/But For353 12TF Management (Easy-Rule)433 13TF Management (Fair-Rule)343 Source; Al-Gahtani 2010 Comparison of the Results of Different Delay Analysis Techniques Delay Analysis Techniques 7 Delay Analysis Technique Project Delays Total ECNEEN But For (Gross of Measure)053 8 Window/But For TF Management (Easy-Rule) Comparison of the Results of Different Delay Analysis Techniques As-planned finish date As-build finish date 10 days Delay Analysis Techniques 8 Source; Menesi 2007 Comparison of the Results of Different Window Sizes Furthermore, using the same delay analysis technique with different assumptions may lead to get different results. For example, using window analysis with different window size can lead to get different results. NWDs after the Project Due Date 9 Schedule TuMoSuSaFrThWeTuMoSuSaFrThWeTuMoSuSaFrTh K LLLLLLL MMMMMM Project End Delay NWDs within the project duration NWDs after the project due date in contract NWDs= Non Working Days Are these NWDs consider as a delay? Calendar adds complexity in delay claims analysis. NWDs after the Project Due Date 10 NWDs within the original project duration consider as a part of the baseline schedule NWDs after the project due date, consider as a delay! NWDs after the Project Due Date 11 How we can allocate the delay responsibility associated with NWDs after the project duration date? Delay Responsibility Associated with NWDs 12 Project End Delay Who is the responsible for NWDs delay? Lets see how current delay analysis techniques allocate the responsibility for delay in NWDs EC= Excusable Compensable Delays NE= Non-excusable Delays EN= Excusable Non-compensable Delays Delay Responsibility Associated with NWDs 13 Delay analysis techniques usually deal NWDs after the project due date within two main situations: Situation 1: Ignoring the NWDs Situation 2: Considering the NWDs but with inaccurate allocating manner. But-For Technique- Situation 1 Example: Using But-for technique to analyze this case Delay Responsibility Associated with NWDs 14 But-For Technique- Situation 1 Delay Responsibility Associated with NWDs 15 But-For Technique- Situation 1 EC=1 ; NE=1 ; EN=0 While the overall final delay = 4 days ( 1EC,1NE, 2NWDs) Total = 2 In this situation, this technique ignores NWDs As-planned finish date As-build finish date 4 days Delay Responsibility Associated with NWDs 16 But-For Technique - Situation 2 As-Planned Schedule AAAA BBB CC As-Build Schedule AAAECA BNE BB CC Delay Responsibility Associated with NWDs 17 But-For Technique - Situation 2 Delay Responsibility Associated with NWDs 18 But-For Technique - Situation 2 EC=1 ; NE=4 ; EN=0 The overall final delay = 5 days ( 1EC,2NE, 2NWDs) Total delay=5 In this situation, this technique allocate the responsibility for delay in NWDs only for contractor, although the owner also cause a delay. As-planned finish date As-build finish date 5 days Delay Responsibility Associated with NWDs 19 Window Technique- Situation 2 Example: Using Window Snapshot technique to analyze this case Delay Responsibility Associated with NWDs 20 Window Technique - Situation 2 Delay Responsibility Associated with NWDs 21 Window Technique- Situation 2 EC=3 ; NE=1 ; EN=0 The overall final delay = 4 days ( 1EC,1NE, 2NWDs) Total delay=4 In this situation, this technique allocate the responsibility for delay in NWDs only for owner, although the contactor also cause a delay. As-planned finish date As-build finish date 4 days Delay Responsibility Associated with NWDs 22 Therefore, there is a critical need to systematic method to allocate NWDs according to delay amount for each party. Accordingly, there is inconsistent results between delay analysis methods regarding the NWDs allocating. Delay Responsibility Associated with NWDs 23 Insulate the NWDs from delay after the project due date To allocate NWDs more accurately: Use the Equations for allocating NWDs Summation the delays obtained from delay analysis with the delay associated with NWDs Allocating Method for NWDs in Delay Analysis 24 Allocating Method for NWDs in Delay Analysis 25 Three formulas are suggested to accurately allocate the delay associated with NWDs to the appropriate contract parties, as follow: Where: EC (NWDs), NE (NWDs), EN (NWDs) = delay associated with NWDs by the owner, contractor, and third party (majeure forces) respectively. EC, NE, EN= delay caused by the three contract parties (owner, contractor, and third party respectively) that obtained from delay analysis. NWDs= non-working days after the project passes the completion date. (1) (2) (3) Allocating Method for NWDs in Delay Analysis 26 The total delay by each contract party can be calculated by adding the delays obtained from delay analysis with the delay associated with NWDs as follow: (4) (5) (6) An Illustrated Case Study using TFM 27 The proposed formulas can be applied with any currently used period delay analysis technique. However, in the recent trends in delay analysis, micro-level analysis has been implemented to yield more accurate results. As-planned Schedule As-Built Schedule Total Float Management (TFM) was used to demonstrate the developed formulas utilizing an illustrated case study An Illustrated Case Study using TFM 28 NWDs were identified within a separate accounts Analysis at Day 2 Entitlement of TF Due to 1 EC Delay in Activity A An Illustrated Case Study using TFM 29 Analysis at Day 11 Entitlement of TF Due to 1 NE of Delay in Activity B An Illustrated Case Study using TFM 30 As-planned finish date As-build finish date 4 days According to Equations 1-3 The results presented a reasonable allocation of NWDs to yield accurate delay analysis. TFM Software 31 A fully fledged web application was developed for delay analysis by using TFM that can interact with multiple users at a time through internet. TFM Software has many features including: Analyze the delay claim by using day-by-day approach by just click one button (fast and accurate). Has the capability to be integrated with P6. Has the ability to allocate NWDs Has the option for analyze the concurrent delay in both way, easy- rule or fair-rule. Has the ability to analyze the TF and determine the TF overuse by any of the project parties. Produce good delay analysis reports. And more Analyze the delay claim by using day-by-day approach by just click one button (fast and accurate). Has the capability to be integrated with P6. Has the ability to allocate NWDs Has the option for analyze the concurrent delay in both way, easy- rule or fair-rule. Has the ability to analyze the TF and determine the TF overuse by any of the project parties. Produce good delay analysis reports. And more TFM Software 32 The users can login to the system by using their user credentials TFM Software 33 A case study will be applied to illustrate the developed software As-Planned Schedule- Primavera TFM Software 34 Data Input Direct Data Input in software TFM Software 35 Data Input Importing Data from Primavera Exporting Excel File Importing TFM Software 36 Data Input Importing Data from Primavera Data Mapping TFM Software 37 Data Scheduling TFM Software 38 Delay Analysis Configurations From this screen, the user can identify the method of analysis for concurrent delay and identify the allocation of ownership of the original TF TFM Software 39 Delay Input The user can insert the delay start date, the delay finish date, and the delay duration for each activity that has delay event TFM Software 40 Change Order and Acceleration The user can insert the change orders and acceleration event through this screen TFM Software 41 Delay Analysis Screen Delay Analysis TFM Software 42 Day-by-Day Results TFM Software 43 Through allocating the delay associated with NWDs by using the proposed formulas, the total delay for each party is: 5 EC; 7 NE and 5EN The summary of delays for each party that was obtained from the delay analysis includes 3 EC; 4 NE and 3EN as well as 7 NWDs. Results of Delay Analysis THANK YOU 44