What Makes a Good Schedule?
Nisan 26, 2014 Yorum bırakın
- All construction activities have at least one appropriate predecessor and successor. Only “Start Project” and the “End Project” are open ended.
- Must use an appropriate WBS & Cost Coding Structure
- Must include detailing, spooling and prefabrication to support construction installation.
- The “As‐Planned” CPM network is based on conditions known on bid‐day.
- Must be able to indicate work flows (crew movement requirements) and work packages
- All work scopes are covered by at least one activity package. All necessary logic restraints are established within the schedule.
- Can occur without interruption from other activities. If the activity will need to stop so that another trades can work, then resume; the activity should further detailed.
- Can be measured (1000 LF of small conduit, or 400 LF of large cable, or 650 Light Fixtures, etc…).
- Construction activity durations do not exceed 15‐21 work days
- Relationships are Finish‐to‐Start, or Start‐to‐Start AND Finish to Finish. SF relationships are not used.
- Negative lags (leads) are not used.
- Procurement, Submittals, Reviews, and material deliveries are identified.
- Relationship Lags do not exceed the Predecessor Duration
- Weather sensitive work is properly assigned to a Weather sensitive calendar. Normal weather is programmed into the CPM network calendar.
- Contract milestones are calculated using a Finish On or Before constraint so that backward pass calculations are properly determined.
- Must include QA/QC activities as well as Testing and Commissioning
- Each activity is assigned to a responsible foreman
- Obtain input and gain formal commitment (buy‐in) from all project team members (foreman, superintendants, etc).
Reference: Ahmet Cetin