## S Curve Analysis And Project Management

PM Milestone Project Management Templates

Get Instant Access

When you take the monthly individual projected requisition amounts and then sum them for each month, you can develop a baseline "S" curve for the project. The S curve can be used to track the monthly expenditures and progress of the project against the baseline developed with the project schedule and costs. Exhibit 20-7 contains a sample S curve cumulative payment. Exhibit 20-8 contains a sample S curve Earned value analysis.

During the course of the construction of the project, we can monitor the actual money spent and the progress of the work, and note any deviations from the original plan or baseline S curve. Exhibit 20-9 indicates a project that is behind schedule. Exhibit 20-10 indicates a project that is ahead of schedule.

Exhibit 20-7

Sample S curve cumulative monthly payments.

40,000 35,000 -30,000 -25,000 --\$ 20,000 -15,000 -10,000 -5,000 --

Based on the classic S curve analysis Expenditure analysis

Based on the classic S curve analysis Expenditure analysis

40,000 35,000 -30,000 -25,000 --\$ 20,000 -15,000 -10,000 -5,000 --

-t-^ i ! 1 I 1 1 I 1 1 I 1 1 I 1 1 I 1 1 I 1 1 I 1 1 I 1 1 I 1 1 I 0 2003-2003-2004-2004-2005-2005-2006-2006-2007-2007-200812 12 12 12 12 1 Year

T250000

-t-^ i ! 1 I 1 1 I 1 1 I 1 1 I 1 1 I 1 1 I 1 1 I 1 1 I 1 1 I 1 1 I 0 2003-2003-2004-2004-2005-2005-2006-2006-2007-2007-200812 12 12 12 12 1 Year

Estimated completion

Time now

Cost

Estimated completion

Time now

Cost

Original duration for work planned to date

Actual duration for work planned to date Time

Planned completion

Exhibit 20-8

Sample S curve earned value analysis.

Original duration for work planned to date

Actual duration for work planned to date Time

Planned completion

Contract target cost

Reporting cut-off -date variance dollars

Budget cost for work scheduled (PV) planned accomplishment

Contract target cost

Budget cost for work scheduled (PV) planned accomplishment variance dollars

Budgeted cost at completion

Projected slippage

Budget cost for work performed (EV) actual accomplishment

Budget cost for work performed (EV) actual accomplishment

Estimated cost at completion

Projected overrun

Budgeted cost at completion

Projected slippage

Current date

Time

Exhibit 20-9

Sample S curve variance analysis behind schedule.

Exhibit 20-10

Sample S curve variance analysis ahead of schedule.

Project Underrun

Estimated cost at completion

Project Underrun

Estimated cost at completion

Current date Time

Current date Time