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Programme and Planning Level 1 - Coggle Diagram
Programme and Planning Level 1
Programme
RIBA Plan of Works
The RIBA Plan of Work organises the process of briefing, designing, constructing and operating building projects into eight stages. The Plan of Work explains outcomes, core tasks and information exchanges required at each stage.
What is a programme and why is it needed?
1) The programme is a reflection of the scope of work, it identifies activities and sequences those activities efficiently. A well executed construction programme outlines each step and provides dates for completion.
2) Maintaining an effective programme in construction is key to identifying potential risks, minimising delays and ensuring the project is completed on time
3) The programme is used to both plan work and monitor progress
What information does a programme show?
1) Activities and their sequencing
2) Activity duration including the start and finish date
3) Activity dependencies
4) Milestones (key dates)
Milestones
- A project milestone is a task of zero duration that shows an important achievement in a project
1) Planning permission granted
2) RIBA Stage 3 complete
3) Contractor appointed
4) Start on site
5) Building watertight
5) Float and lag
Float
- is the amount of time an activity can be delayed without delaying the subsequent activity or critical path
Free Float
- is used to describe amount of time that spans from the completion of one previously scheduled activity and extends to the point at which the next scheduled activity is set to begin. Free float can be calculated by determining the amount of the time between the earliest start date of the initial activity and the earliest start date of the succeeding activity, and then subtracting from that total the amount of time that it is expected the first activity will take to complete. During this period of free float, the completion time or date of the earlier of the activities can be extended up until the scheduled early start date or time of the next scheduled activity without causing delays. If there is no succeeding activity scheduled, the project end date would be used to determine the back end of the free float window.
Total Float
- The time an activity can be delayed from its early start date without delaying planned completion. Available either to the employer or contractor (on a first come first served basis)
Lag
- When the first activity completes and there is a delay before the second activity starts.
6) Critical Path
Critical Path
- is the longest sequence of activities that must be completed to successfully conclude a project. Activities on the critical path are known as critical activities because if they're delayed, the whole project will be delayed
7) Current and predicted progress
8) Cashflow and resource requirements
How would you put together a programme of works?
1) First understand the purpose of the programme and the level of detail required
2) Identify all activities to be completed, project deliverables, contractual requirements and key milestones
3) Assign durations to each activity
4) Summarise activities into RIBA stages
5) identify relationships between activities and link accordingly
6) Identify float & critical path in the programme
7) issue the programme to the team for comment, adjust as required
8) Monitor and review
Progress & Delays
Dropline
Straight drop line
- After progress is entered, the programme is rescheduled so each task sits on the progress reporting date. This is useful to determine the impact on the critical path.
Jagged drop line
- Progress as a percentage is entered for each task. This shows activities which are on, behind or ahead on reporting date
Delays
Concurrent delay
- Two or more delays caused by different parties occur independently of each other but during the same period
Resourcing
1) Assigning plant and labour can allow a resource profile to be built
2) This ultimately identifies resource requirements for the project and/or pinch points
Acceleration
Acceleration is completing the works in a shorter period or mitigating some form of delay to therefore complete by the original date
Acceleration options
1) Re-sequencing works
2) Working longer hours
3) Increasing resources
4) Adopting alternative construction method such as off-site manufacturing
5) Changing the design or specification to improve lead times
6) reducing the scope of works