1. Reviewing & Analyzing Schedule
CTC-415

2. Reviewing the Schedule
Is Schedule complete
Are Activity Duration Reasonable
Are Activity Relationships Complete
Are Activity Relationships Valid
Is Project Calendar Correct
Is Schedule Duration within Contract Time
Are Contractual Milestones Met

3. Analyzing the Schedule
Is Critical Path Reasonable
Are there Multiple Critical paths
What Activities are Near Critical
How does Work Flow
Are there Conflicts Among Concurrent Activities
Is there an Excessive amount of Work at any Time

4. Updating Schedule Frequency Depends on Complexity Unexpected events
More complex -> more updates
Unexpected events
Update after event to determine new completion date
Helps team evaluate strategies to mitigate impacts
When specified
By contract documents

5. Updating Schedule How Gather Activity Status Info
Update Date – when the info is gathered
Activity status
Actual start date – meaningful work begins
% complete
Work in place -> work in place/planned work quantity
Time expended -> time expended/ planned duration (only good for time dependent activities like concrete curing)
Cost Incurred - >cost incurred/planned cost (depends on actual resource productivity being constant and resource costs not varying)
Resource used -> Resource Used/Planned resource amount

6. Updating Schedule How Activity status Gathering Data
Remaining duration – Remaining Work quantity/Anticipated Productivity
Actual finish date – all completed activities
Provides data for future jobs
Gathering Data
Direct observation, Update meetings, field reports, turnaround reports, photos and videotape

7. Modify and Revise Schedule
Revise network logic
Change duration to meet contracted completion
Reflect changes in planned means and methods for completing activity
Shift activity to better time (summer for concrete)

8. Modify and Revise Schedule
Revise Activity Durations
Planned quantity of work has changed
Amount of resources has changed
Productivity is either higher or lower than planned
Add & Delete Activities
Scope of work changed
Activities divided into smaller activities

9. Review and Analyze Schedule
Make sure new schedule does not contain errors
Implement updated schedule

10. Analyzing Schedule Status
What is the basis for evaluating schedule status?
Usually the original schedule is the baseline
What is planned completion date
Is updated schedule completion date same as baseline
If not – why not (is there an error)

11. Analyzing Schedule Status
Has the critical path shifted?
If so – why
Are CP activities really “critical”
Has the float changed on any activities?
Has weather become a factor for any activity
Are there trends worth watching
Any changes since last update?

12. Out of Sequence Work Why? Preserve Schedule Logic Keep crews busy
Preparatory work starts early
Gives crew a chance to test means and methods
Preserve Schedule Logic
Shorten successor activity caused by out of sequence work
Keep all other logic intact

13. Value Engineering Provides alternatives to the proposed design
Save Owner $$
Must be as good or better than original design
Must save enough $$ so that contractor can recover his cost of doing VE
Usually comes from contractor’s or engineer’s previous experience

14. Value Engineering
Can save $$ either due to savings in time or materials
Ex: Composite Wall and roofs
Material cost per sf is higher than regular roof
Labor cost is lower
Requires a crane

15. Value Engineering Ex: Replace infiltrators with Eljen In drains
System size is reduced to 50%
Also reduces amount of sand, clay, topsoil
Reduces dozer time and installation time
In-drain costs about 2x infiltrator