Oracle® Fusion
Applications Project Management Implementation Guide 11g Release 1 (11.1.2) Part Number E2038402 
Contents 
Previous 
Next 
This chapter contains the following:
Calculating Distribution Factors for Spread Curves: Examples
Spread curves let you distribute quantity, cost, and revenue amounts automatically across accounting or project accounting periods. You assign a spread curve to each resource class. Planning resources (in the planning resource breakdown structure) inherit the spread curve setting from the associated resource class. You can change the spread curve for the planning resource and for any corresponding task assignments, or budget or forecast lines.
You can create spread curves, use predefined spread curves, or edit them as required. The following is a description of spread curve components (spread points and distribution factors) and predefined spread curves.
Spread curves contain 10 spread points. Specify distribution factors for any combination of the spread points.
During financial or project planning, spread points are distributed proportionately across periods. For example, if amounts are to be spread across four periods, Oracle Fusion Projects allocates the combined value of 2.5 spread points to each period. That is, the number of spread points divided by the total number of periods: 10/4.
Distribution factors are prorated according to the spread points allocated to each period. For example, if $100 is to be spread across four months for a planning resource that uses an even spread curve (where amounts are distributed evenly), then each period is assigned $25 each. That is, the value of 2.5 spread points (2.5 * 10).
Important
Spread points without values are assigned a zero distribution factor and hence corresponding periods are not allocated any amounts.
The following table lists predefined spread curves provided by Oracle Fusion Projects.
Name 
Description 
Distribution Factors 

Even 
Ensures a linear distribution of financial or project plan values across periods. 
10101010101010101010 
Back Loaded 
Ensures a backloaded distribution of financial or project plan values across periods. Assigned amounts increase over succeeding periods. 
051015202530354045 
Front Loaded 
Ensures a backloaded distribution of financial or project plan values across periods. Assigned amounts decrease over succeeding periods. 
454035302520151050 
S Curve 
Ensures an Sshaped distribution of financial or project plan values across periods. 
181081015171817158 
Bell Curve 
Ensures a bellshaped distribution of financial or project plan values across periods. Assignment of plan values is highest in the middle periods. 
041012141210400 
Distribution factors are prorated according to the spread points allocated to each period.
For example, if $100 is to be spread across four months for a planning resource that uses an even spread curve (where amounts are distributed evenly), then each period is assigned $25 each. That is, 10 spread points spread over 4 months equals 2.5 spread points per period. Each spread point has a distribution factor of 10.
The following is a description of how distribution factors are calculated for full or partial periods.
To continue our previous example: Say our planning resource was using a backloaded spread curve rather than an even spread curve.
Note
Default distribution factors for a backloaded spread curve are as follows: 051015202530354045. Hence the total distribution for the spread curve is 225.
The following table describes how distribution factors are determined and amount allocated over the four planning periods.
Period 
Distribution Factor Calculation 
Weighted Distribution Factor 
Distribution Percentage 
Distributed Amount 

1 
Distribution factors assigned to spread points 1 and 2 plus half of the distribution factor assigned to spread point 3: 0 + 5 + (0.5 * 10) 
10.0 
4.44%, (10.0/225) 
$4.44 
2 
Half of distribution factor assigned to spread point 3 plus distribution factors assigned to spread points 4 and 5: (0.5 * 10) + 15 + 20 
40.0 
17.78%, (40.0/225) 
$17.78 
3 
Distribution factors assigned to spread points 6 and 7 plus half of the distribution factor assigned to spread point 8: 25 + 30 + (0.5 * 35) 
72.5 
32.22%, (72.5/225) 
$32.22 
4 
Half of distribution factor assigned to spread point 8 plus distribution factors assigned to spread points 9 and 10: (0.5 * 35) + 40 + 45 
102.5 
45.56%, (102.5/225) 
$45.56 

Totals 
225 
100% 
$100 
Transaction start dates associated with a planning resource or task frequently do not coincide with the start or end dates of a period. In such a case, the actual number of planning resource or task transaction days determines how spread points and constituent distribution factors are allocated to full and partial periods.
Assume that the dates for a task assignment cover only 15 days of the first month (a 30day month) of a fourmonth planning period. That first month represents the value of 0.5 spread points.
In such a case, the spread point value for each full period is calculated by dividing the total number of spread points (10) by the number of periods corresponding to the transaction (3.5). In other words, spread point values are as follows:
Full period : 10/3.5 = 2.8571
Partial Period: (10/3.5) * 0.5 = 1.4287