Retrospective longest path analysis
Network analysis can help identify the interrelationships between tasks that make up complex processes and establish the most appropriate timing and sequence for their execution. The critical path is the path through the network that requires the longest period of time to progress from start to completion. This is the minimum timeframe necessary to complete the whole project.
Retrospective longest path analysis involves the determination of the retrospective as-built critical path.
This first requires the development of a detailed as-built programme. It is then possible to trace the longest continuous path backwards from the actual completion date to determine the as-built critical path. The incidence and extent of critical delay can then be determined by comparing key dates along the as-built critical path with the corresponding planned dates in the baseline programme. It is then possible to study project records to determine which events may have caused any critical delays identified.
This method only has limited capacity to recognise changes to the critical path during the course of the works.
Ref The Society of Construction Law Delay and Disruption Protocol, 2nd edition, published in February 2017 by the Society of Construction Law (UK).
[edit] Related articles on Designing Buildings Wiki
Featured articles and news
Solar generation in the historic environment
Success requires understanding each site in detail.
Level 6 Design, Construction and Management BSc
CIOB launches first-ever degree programme to develop the next generation of construction leaders.
Open for business as of April, with its 2026 prospectus and new pipeline of housing schemes.
The operational value of workforce health
Keeping projects moving. Incorporating unplanned absence and the importance of health, in operations.
A carbon case for indigenous slate
UK slate can offer clear embodied carbon advantages.
Costs and insolvencies mount for SMEs, despite growth
Construction sector under insolvency and wage bill pressure in part linked to National Insurance, says report.
The place for vitrified clay pipes in modern infrastructure
Why vitrified clay pipes are reclaiming their role in built projects.
Research by construction PR consultancy LMC published.
Roles and responsibilities of domestic clients
ACA Safety in Construction guide for domestic clients.
Fire door compliance in UK commercial buildings
Architect and manufacturer gives their low down.
Plumbing and heating for sustainability in new properties
Technical Engineer runs through changes in regulations, innovations in materials, and product systems.
Awareness of the Carbon Border Adjustment Mechanism
What CBAM is and what to do about it.
The new towns and strategic environmental assessments
12 locations of the New Towns Taskforce reduced to 7 within the new towns draft programme and open consultation.
Buildings that changed the future of architecture. Book review.
The Sustainability Pathfinder© Handbook
Built environment agency launches free Pathfinder© tool to help businesses progress sustainability strategies.
Government outcome to the late payment consultation, ECA reacts.