Before you begin calculating PCI from maintenance treatments: you must perform maintenance treatments on a road section and update the section record in the Maintenance/Rehabilitation New M&R tab. The Calculations screen allows you to perform calculation from maintenance treatments. The Calculations screen is shown below.

To calculate PCI from maintenance treatments:

1.	Open the Calculations screen and click on the PCI From Maintenance Treatments radio button in the Calculation Type section. You have three calculations options: Treatment Date - When the Treatment Date radio button is clicked, a pull-down menu appears. Select an treatment date from the list; only one date can be selected. Select Management Section - When the Select Management Section radio button is clicked, all of the management sections that have had records updated since the last calculations were made, become visible in a grid. Select a management section from the list by clicking in the box to the left of a management section. You can select multiple management sections by holding the <Ctrl> button as you click in the boxes to the left of the desired management sections. This grid is illustrated below. All Management Sections - When the All Management Sections radio button is clicked, the number of management sections that have had records updated since the last calculations were made, is displayed.
2.	Click the Start Calculation button. The PCI Output screen appears. This screen, shown below, allows you to indicate if you want to see the PCI report, update management units, or both.
	Update Management Section(s) and View PCI Report: The following actions take place:

1.	The PCI is calculated. The existing PCI information is moved to the PCI History file. The current PCI information is replaced with the PCI from the maintenance treatment. The PCI Date is set to the treatment date. The PCI value is set to 100 if the treatment was an overlay or reconstruction, otherwise it is set to an increased value based on the PCI increase factors. The Visual PCI is not checked. PCI Hi and PCI Low are set to zero. PCI High - Low > 25 and Special Unit are not checked. # of Inspection Units is set to 1. % Load Related is set to 100. % Environment and % Other are set to zero. No Extrapolated Distress data is displayed.
2.	If the treatment is a reconstruction, the Date Constructed is set to the date of treatment and the surface type changes as follows:        a. If the treatment is a Reconstruct as PCC (RP) then the surface type is PCC.        b. If the treatment is a Reconstruct as ST (RS) then the surface type is ST.        c. If the treatment is a Reconstruct as Gravel (RG) then the surface type is Gravel.        d. If the treatment is a Reconstruct as AC (RA) then the surface type is AC.
3.	If the treatment is an overlay, the date of construction is set to the date of the treatment and the surface type changes as follows:        a. the surface type is AC then the surface type changes to AC/AC        b. If the surface type is PCC then the surface type changes to AC/PCC        c. If the surface type is ST then the surface type changes to AC        d. If the surface type is AC/AC or AC/PCC then the surface type doesn't change.        e. If the treatment is Overlay with PCC then the surface type changes to PCC.
4.	If the treatment is a surface seal applied to a pavement with a surface type of surface treatment (ST), the Date Constructed is set to the date of treatment and the Surface Type remains ST.
5.	If it is another maintenance treatment of a surface seal applied to a pavement type other that St, the Date Constructed and Surface Type are not changed.
6.	Appropriate information is placed in the M&R History as described for M&R History Tab.
7.	A summary report will be generated and displayed.

1.	The PCI is calculated. The existing PCI information is moved to the PCI History file. The current PCI information is replaced with the PCI from the maintenance treatment. The PCI Date is set to the treatment date. The PCI value is set to 100 if the treatment was an overlay or reconstruction, otherwise it is set to an increased value based on the PCI increase factors. The Visual PCI is not checked. PCI Hi and PCI Low are set to zero. PCI High - Low > 25 and Special Unit are not checked. # of Inspection Units is set to 1. % Load Related is set to 100. % Environment and % Other are set to zero. No Extrapolated Distress data is displayed.
2.	If the treatment is a reconstruction, the Date Constructed is set to the date of treatment and the surface type changes as follows:        a. If the treatment is a Reconstruct as PCC (RP) then the surface type is PCC.        b. If the treatment is a Reconstruct as ST (RS) then the surface type is ST.        c. If the treatment is a Reconstruct as Gravel (RG) then the surface type is Gravel.        d. If the treatment is a Reconstruct as AC (RA) then the surface type is AC.
3.	If the treatment is an overlay, the date of construction is set to the date of the treatment and the surface type changes as follows:        a. the surface type is AC then the surface type changes to AC/AC        b. If the surface type is PCC then the surface type changes to AC/PCC        c. If the surface type is ST then the surface type changes to AC        d. If the surface type is AC/AC or AC/PCC then the surface type doesn't change.        e. If the treatment is Overlay with PCC then the surface type changes to PCC.
4.	If the treatment is a surface seal applied to a pavement with a surface type of surface treatment (ST), the Date Constructed is set to the date of treatment and the Surface Type remains ST.
5.	If it is another maintenance treatment of a surface seal applied to a pavement type other that St, the Date Constructed and Surface Type are not changed.
6.	Appropriate information is placed in the M&R History as described for M&R History Tab.