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International
Delay Analysis
Approaches
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@magedkom /in/magedkom ArabPlanners @profplanner
Mohamed Maged Hegazy
Project Management Consultant
LLM, MBA, PMP, CCP, P3O
• Master in Construction Law – Salford University, Manchester, UK
• Master of Business Administration – UoPeople, US
• B.Sc. Civil Engineering – Ain Shams University, Egypt
• Consultant – Saudi Council of Engineers, Saudi Arabia
• CCP, Certified Cost Professional credential – AACE International, US
• PMP, Project Management Professional credential – PMI, US
• P3O, Portfolio, Programme and Projects Offices credential – AXELOS, UK
• FIDIC Contracts Consultant, AIA (Brussels) Fellow
• Author of 50 Planning fundamentals & Fundamentals of Construction Contracts
• Experience more than 21 years in mega-projects (Buildings, Infrastructure & Roads)
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My Related Publications
Project Planning and Scheduling Delay Analysis Contractual and Legal Aspects
@magedkom /in/magedkom ArabPlanners @profplanner
2020
@magedkom /in/magedkom ArabPlanners @profplanner
International Delay Analysis Perspectives
1) RICS Guidance
2) Delay Analysis Categories.
3) ASCE Perspective
4) Source Data.
5) AACE RPs
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•
‫م‬
‫الموضوع؟‬ ‫هذا‬ ‫تناولت‬ ‫التي‬ ‫الهامة‬ ‫المراجع‬ ‫هي‬ ‫ا‬
‫وهي‬ ‫التأخير‬ ‫تحليل‬ ‫موضوع‬ ‫في‬ ‫تكلمت‬ ‫التي‬ ‫المفيدة‬ ‫المراجع‬ ‫من‬ ‫بعض‬ ‫إليكم‬
:
References
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•
‫الكتب‬ ‫بعض‬
:
‫و‬ ‫التأخير‬ ‫وتحليل‬ ‫التمديد‬ ‫مطالبات‬ ‫موضوع‬ ‫في‬ ‫تكلمت‬ ‫التي‬ ‫الكتب‬ ‫من‬ ‫بعض‬ ‫إليكم‬
‫هي‬
:
More References
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Prospective Delay Analysis:
Analysis of facts associated with delay events during
construction of a project and the estimation of their effect
upon the planned completion date of a project. (Interim
Extension of Time).
Retrospective Delay Analysis:
Analysis of facts associated with delay events after
completion of the construction period of a project. (Final
Extension of Time).
Interim vs Final Extension of Time
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Categories
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Theoretical Based Methods
Global Impact method
Considers an increase in work scope as directly proportional to time
and ignores timing, concurrency and own delays.
As-planned impacted method
Impacts delays upon the original baseline and does not consider
mistakes in the baseline or events at the time of the delay.
As-built “but for”
Inconsistent with the facts and relies upon the as built programme
demonstrating that all delay is excusable.
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Actual Based Methods
As-planned -v- as built method
Simple and visible in a single window but not suitable for complex
projects with competing and concurrent delay.
Windows/snap shot or update method
The use of electronic progress reports to analyse incrementally the
changes to the as planned programme with as built assistance.
Impact/Update – Timeslices
Driven by a delay schedule and subject to time slices within which the
anticipated and actual progress is analysed. Strong in addressing
mitigation and concurrent delays.
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RICS Professional Guidance
General Principles (Level 1 - Knowing):
- Costs of Delay: LDs vs Prolongation/time-related costs.
Practical Application (Level 2 - Doing):
- Measurement of Delay.
- Methods of Delay Analysis.
Practical Considerations (Level 3 - Advising):
- Which Method should be adopted?
- Strength and Weakness of each Method.
- Concurrent Liability of Delay.
If a delay has been caused by EE, then in general, the
contractor will be entitled to EOT. In order to decide whether a
contractor is entitled to an extension of time, it is necessary to
establish the cause of the delay and the period of delay. In
some cases this will be very easy but in many cases it will be
very difficult and can be controversial.
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Measurement of Delay: form contract completion date to the actual completion date (retrospective),
or form the current contract completion date to the projected completion date (prospective). It’s
important to agree on the benchmark programme that will be used (BIM can help) to carry out the
reviews to resolve questions of culpability for delay or to estimate the likely delay period.
Methods of Delay Analysis
Methods of delay analysis:
-Simple and relatively simple
1. Overview of the facts: It deals with relatively straight forward
claims when the cause and delay are apparent.
2. Comparing actual and planned progress: It’s comparing the
activities timing using the contemporaneous documents to
review the reasons of discrepancies/ delay.
-Detailed, forensic and more reliable
3. Critical path analysis (CPA): Based on the logic-link using either
planned (prospect. or retrosp.) or as-built programme.
4. Focused methods of analysis: Over shorter periods using an
updated programme (prospective: TIA), or particular periods
with as-built data (Retrospective: window or time slice).
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Records / Source Data
Main Course References
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15
Delay Analysis Approaches - AACE
Prospective Retrospective
Insert a modeled
fragnet into the
schedule, then check
logic and duration,
and finally recalculate
the CPM to measure
the time impact.
The appropriate
update schedule is the
most recently
reviewed schedule
update before the
event (unimpacted
schedule).
1. Classification and
Principles
2. Source Validation
3. Method
Implementation
4. Analysis Evaluation
5. CHOOSING A
METHOD
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Classification
Observational: Examining the schedule itself without changes.
Static: Same network - Dynamic: updates with variations.
Modeled: Representing delay events in schedule.
Additive: add to a base - Subtractive: from as-built.
@magedkom /in/magedkom ArabPlanners @profplanner
Thank You
17
Don’t Hesitate to contact….
M.Maged Hegazy
mm.hegazy@ppmconference.net
Mobile : 00966 (0) 58 0264 968

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International Delay Analysis Approaches

  • 1. WhatsApp: +201153408493 Facebook: Frontiers International Website: https://portal.frontierspm.com/ Email: info@frontierspm.com 1 Facebook: Frontiers International Website: https://portal.frontierspm.com/ Email: info@frontierspm.com WhatsApp: +201153408493 International Delay Analysis Approaches
  • 2. WhatsApp: +201153408493 Facebook: Frontiers International Website: https://portal.frontierspm.com/ Email: info@frontierspm.com 2 @magedkom /in/magedkom ArabPlanners @profplanner Mohamed Maged Hegazy Project Management Consultant LLM, MBA, PMP, CCP, P3O • Master in Construction Law – Salford University, Manchester, UK • Master of Business Administration – UoPeople, US • B.Sc. Civil Engineering – Ain Shams University, Egypt • Consultant – Saudi Council of Engineers, Saudi Arabia • CCP, Certified Cost Professional credential – AACE International, US • PMP, Project Management Professional credential – PMI, US • P3O, Portfolio, Programme and Projects Offices credential – AXELOS, UK • FIDIC Contracts Consultant, AIA (Brussels) Fellow • Author of 50 Planning fundamentals & Fundamentals of Construction Contracts • Experience more than 21 years in mega-projects (Buildings, Infrastructure & Roads)
  • 3. WhatsApp: +201153408493 Facebook: Frontiers International Website: https://portal.frontierspm.com/ Email: info@frontierspm.com 3 My Related Publications Project Planning and Scheduling Delay Analysis Contractual and Legal Aspects @magedkom /in/magedkom ArabPlanners @profplanner
  • 4. 2020 @magedkom /in/magedkom ArabPlanners @profplanner International Delay Analysis Perspectives 1) RICS Guidance 2) Delay Analysis Categories. 3) ASCE Perspective 4) Source Data. 5) AACE RPs
  • 5. WhatsApp: +201153408493 Facebook: Frontiers International Website: https://portal.frontierspm.com/ Email: info@frontierspm.com 5 • ‫م‬ ‫الموضوع؟‬ ‫هذا‬ ‫تناولت‬ ‫التي‬ ‫الهامة‬ ‫المراجع‬ ‫هي‬ ‫ا‬ ‫وهي‬ ‫التأخير‬ ‫تحليل‬ ‫موضوع‬ ‫في‬ ‫تكلمت‬ ‫التي‬ ‫المفيدة‬ ‫المراجع‬ ‫من‬ ‫بعض‬ ‫إليكم‬ : References
  • 6. WhatsApp: +201153408493 Facebook: Frontiers International Website: https://portal.frontierspm.com/ Email: info@frontierspm.com 6 • ‫الكتب‬ ‫بعض‬ : ‫و‬ ‫التأخير‬ ‫وتحليل‬ ‫التمديد‬ ‫مطالبات‬ ‫موضوع‬ ‫في‬ ‫تكلمت‬ ‫التي‬ ‫الكتب‬ ‫من‬ ‫بعض‬ ‫إليكم‬ ‫هي‬ : More References
  • 7. WhatsApp: +201153408493 Facebook: Frontiers International Website: https://portal.frontierspm.com/ Email: info@frontierspm.com 7 Prospective Delay Analysis: Analysis of facts associated with delay events during construction of a project and the estimation of their effect upon the planned completion date of a project. (Interim Extension of Time). Retrospective Delay Analysis: Analysis of facts associated with delay events after completion of the construction period of a project. (Final Extension of Time). Interim vs Final Extension of Time
  • 8. WhatsApp: +201153408493 Facebook: Frontiers International Website: https://portal.frontierspm.com/ Email: info@frontierspm.com 8 Categories
  • 9. WhatsApp: +201153408493 Facebook: Frontiers International Website: https://portal.frontierspm.com/ Email: info@frontierspm.com 9 Theoretical Based Methods Global Impact method Considers an increase in work scope as directly proportional to time and ignores timing, concurrency and own delays. As-planned impacted method Impacts delays upon the original baseline and does not consider mistakes in the baseline or events at the time of the delay. As-built “but for” Inconsistent with the facts and relies upon the as built programme demonstrating that all delay is excusable.
  • 10. WhatsApp: +201153408493 Facebook: Frontiers International Website: https://portal.frontierspm.com/ Email: info@frontierspm.com 10 Actual Based Methods As-planned -v- as built method Simple and visible in a single window but not suitable for complex projects with competing and concurrent delay. Windows/snap shot or update method The use of electronic progress reports to analyse incrementally the changes to the as planned programme with as built assistance. Impact/Update – Timeslices Driven by a delay schedule and subject to time slices within which the anticipated and actual progress is analysed. Strong in addressing mitigation and concurrent delays.
  • 11. WhatsApp: +201153408493 Facebook: Frontiers International Website: https://portal.frontierspm.com/ Email: info@frontierspm.com 11 RICS Professional Guidance General Principles (Level 1 - Knowing): - Costs of Delay: LDs vs Prolongation/time-related costs. Practical Application (Level 2 - Doing): - Measurement of Delay. - Methods of Delay Analysis. Practical Considerations (Level 3 - Advising): - Which Method should be adopted? - Strength and Weakness of each Method. - Concurrent Liability of Delay. If a delay has been caused by EE, then in general, the contractor will be entitled to EOT. In order to decide whether a contractor is entitled to an extension of time, it is necessary to establish the cause of the delay and the period of delay. In some cases this will be very easy but in many cases it will be very difficult and can be controversial.
  • 12. WhatsApp: +201153408493 Facebook: Frontiers International Website: https://portal.frontierspm.com/ Email: info@frontierspm.com 12 Measurement of Delay: form contract completion date to the actual completion date (retrospective), or form the current contract completion date to the projected completion date (prospective). It’s important to agree on the benchmark programme that will be used (BIM can help) to carry out the reviews to resolve questions of culpability for delay or to estimate the likely delay period. Methods of Delay Analysis Methods of delay analysis: -Simple and relatively simple 1. Overview of the facts: It deals with relatively straight forward claims when the cause and delay are apparent. 2. Comparing actual and planned progress: It’s comparing the activities timing using the contemporaneous documents to review the reasons of discrepancies/ delay. -Detailed, forensic and more reliable 3. Critical path analysis (CPA): Based on the logic-link using either planned (prospect. or retrosp.) or as-built programme. 4. Focused methods of analysis: Over shorter periods using an updated programme (prospective: TIA), or particular periods with as-built data (Retrospective: window or time slice).
  • 13. WhatsApp: +201153408493 Facebook: Frontiers International Website: https://portal.frontierspm.com/ Email: info@frontierspm.com 13 Records / Source Data
  • 15. WhatsApp: +201153408493 Facebook: Frontiers International Website: https://portal.frontierspm.com/ Email: info@frontierspm.com 15 Delay Analysis Approaches - AACE Prospective Retrospective Insert a modeled fragnet into the schedule, then check logic and duration, and finally recalculate the CPM to measure the time impact. The appropriate update schedule is the most recently reviewed schedule update before the event (unimpacted schedule). 1. Classification and Principles 2. Source Validation 3. Method Implementation 4. Analysis Evaluation 5. CHOOSING A METHOD @magedkom /in/magedkom ArabPlanners @profplanner
  • 16. WhatsApp: +201153408493 Facebook: Frontiers International Website: https://portal.frontierspm.com/ Email: info@frontierspm.com 16 Classification Observational: Examining the schedule itself without changes. Static: Same network - Dynamic: updates with variations. Modeled: Representing delay events in schedule. Additive: add to a base - Subtractive: from as-built. @magedkom /in/magedkom ArabPlanners @profplanner
  • 17. Thank You 17 Don’t Hesitate to contact…. M.Maged Hegazy mm.hegazy@ppmconference.net Mobile : 00966 (0) 58 0264 968