Precedence diagram method
The Code of Estimating Practice, seventh edition, published by the Chartered Institute of Building (CIOB) in 2009 suggests that the term ‘precedence diagram method’, or PDM, refers to:
A method of constructing a logic network using nodes to represent the activities and connecting them by lines that show dependencies.
The Precedence Diagramming Method (PDM) is a visual representation technique which is used to prepare the project schedule network diagrams and determine the critical path.
The Society of Construction Law Delay and Disruption Protocol, 2nd edition, suggest that a precedence diagram is a network in which the nodes symbolise activities, also referred to as an 'activity-on-the-node network'.
[edit] Related articles on Designing Buildings Wiki
- Acceleration.
- Accepted programme.
- Activity schedule.
- Contractor's master programme.
- Critical path method.
- Design programme.
- Gantt chart.
- Information release schedules.
- Milestones.
- Programme consultant.
- Programme float.
- Programme for building design and construction
- Scheduling construction activities.
- Short period programme.
- Time-location chart.
[edit] External references
Featured articles and news
Embedding AI tools into architectural education
Beyond the render: LMU share how student led research is shaping the future of visualisation workflows.
Why document control still fails UK construction projects
A Chartered Quantity Surveyor explains what needs to change and how.
New planning reforms and Warm Homes Bill
Take centre stage at UK Construction Week London.
A brief run down of changes intentions from April in an onwards.
Reslating an ancient water mill
A rare opportunity to record, study and repair early vernacular roofs.
CIOB Apprentice of the Year 2025/26
Construction apprentice from Lincoln Mia Owen wins this years title.
Insulation solutions with less waste for a circular economy
Rob Firman, Technical and Specification Manager, Polyfoam XPS explains.
Recycled waste plastic in construction
Hierarchy, prevention to disposal, plastic types and approaches.
UK Net Zero Carbon Buildings Standard V1 published
Free-to-access technical standard to enable robust proof of a decarbonising built environment.
Prostate Cancer Awareness Month
Why talking about prostate cancer matters in construction.
The Architectural Technology podcast: Where it's AT
Catch up for free, subscribe and share with your network.
The Association of Consultant Architects recap
A reintroduction and recap of ACA President; Patrick Inglis' Autumn update.
The Home Energy Model and its wrappers
From SAP to HEM, EPC for MEES and FHS assessment wrappers.
Future Homes Standard Essentials launched
Future Homes Hub launches new campaign to help sector prepare for the implementation of new building standards.
Building Safety recap February, 2026
Our regular run-down of key building safety related events of the month.
Planning reform: draft NPPF and industry responses.
Last chance to comment on proposed changes to the NPPF.
A Regency palace of colour and sensation. Book review.
























Comments
Will any one answer me if I post a comment
That depends what the comment is.