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