View
480
Download
1
Category
Preview:
Citation preview
May 22, 2013
S- Curve
Agenda
Agenda
1. Introduction
2. Basis of S-Curve and Set-up
3. Interpretation
4. Questions
Introduction
What is S - Curve:
Value Vs project time:
Planning Value – Planning progress value
Earned Value -- Actual progress value
Actual Value -- Actual Spent value
Why we use S-curve:
As a tool for project helthy check (status)
As a tool for control of schedule and cost
Forcast of completion ETC and EAC
What it is not:
Not only for the PM (but also for company level of schedule and cost monitoring)
Not the only project control tool (shall together with schedule control, cost control as well as man power plan etc.)
Set-up and use
Basis of S-curve
Basis of Data:
Cost baseline– Budget (BOQ with levels of WBS)
Input Data:
Progress data as percentage
TBD Standard Tool:
Already set as EPCM Tool :\\10.161.34.1\Public\Project Tools Matrix\EPCM Project Tools_02\Project Mangement\PM01 Project Plan
Set-up and use
How to Set- up
Line 1- Planning Value Intial setup Distribute budget Vs Time and consist with master schedule
Update of budget (only possible through approved DCN)
Line 2- Earned Value timely update Earned Value or Actual progress, udpated as percentage.
Line 3 – Actual Value Expenditure accumulated value ( invesigation cash flow)
Forecast of completion Estimate to completion (ETC )
Estimate at completion ( EAC)
Set-up and use
How to Set – up - sample
TASKPLAN
BUDGET
%
COMPLETEEV PV AV
Task A 1,000 100% 1,000 1,000 900
Task B 3,500 80% 2,800 2,500 2,200
Task C 2,500 60% 1,500 1,200 1,400
Task D 1,800 30% 540 400 200
Task E 700 5% 35 0 20
Task F 500 0% 0 0 0
TOTALS 10,000 5,875 5,100 4,720
0
650
1500
3000
5100
7200
8600
9400
10000
$0
$1,000
$2,000
$3,000
$4,000
$5,000
$6,000
$7,000
$8,000
$9,000
$10,000
1/1 1/16 1/31 2/15 3/2 3/17 4/1 4/16 5/1
Plan = BCWS Earned Value - BCWP ACWP
How to use for analysis - sample
Set-up and use
Time
Status Point
Schedule Variance
EV - PV
$5875 - $5100
Ahead of Schedule
Earned Value
Schedule Status:
EV is higher than plan, the project is ahead of schedule
How to use for analysis - sample
Set-up and use
Actual Cost :
- ahead of schedule ;
- under budget;
- is it a problem if AV>PV?
No! if EV>AV, it is may not be a problem.
Status Point
Cost Variance
EV - AV
$5875 - $4720
Time
Below Budget
0
5,000,000
10,000,000
15,000,000
20,000,000
25,000,000
30,000,000
Pro
gress
Val
ue
Sample Construction Progress Analysis - XXXX Yangzhou Recycling Plant
Planning value($)
Earned Value($)
Actual Value(Cash Flow).($)
Project Controls - Construction
Progress Curve Sample
0
5,000,000
10,000,000
15,000,000
20,000,000
25,000,000
30,000,000
Pro
gress
Val
ue
S-curve - Metallkraft Yangzhou Recycling Plant
施工进程——麦拓卡夫特扬州回收工厂
Planning value($)
Earned Value($)
Actual Value(Cash Flow).($)
Sample Case of
S-curve
Explanation
Axis
X-axis time line
Y-axis Progress --- RMB or $
3 Lines
Planning Value (PV) - Planned progress
Earned Value (EV) - Actual progress
Actual Value (AV) - Spent progress
Manpower plan
Other Highlights
The S – Curve is currently majorly as tools used for
monitoring the schedule status in construction stage.
• For cost status including ETC,EAC etc., it is included in Detailed
Cost Report ( which is already as TBD standard EPCM document
)
• For schedule control, it will be detailed in schedule control process.
Questions
Recommended