Frequently Asked Question

Contractor Prequalification• Question:
How is the Contractor's Ability Factor Calculated?

• Answer:
Changes to Ability Factors are only calculated for Contractors who were evaluated and had ratings completed on at least one project within the six month rating period. Otherwise, their Ability Factor remains unchanged.
In calculating a Contractor’s Ability Factor, a minimum of six PPR’s are used. If a contractor has six or more Current PPR’s in the six month rating period, all PPR’s are used in the calculation to determine the new Ability Factor. If a contractor has fewer than six PPR’s in the six month rating period, the six most recent PPR’s within a two year period will be used to calculate the new Ability Factor. If the number of current PPR’s and previous PPR’s do not total six, then Supplementary PPR’s are used. A supplementary rating is equal to the mid point value of a Contractor’s existing Ability Factor. For example, if a Contractor’s current Ability Factor is 10, the supplemental rating(s) used for the calculations would be 79.00.
A calculated Ability Factor is generated by averaging these scores and correlating the result to an Ability Factor using Table 1 ( from the Notice to Contractors). The calculated Ability Factor is compared to the existing Ability Factor to determine if a new Ability Factor will be assigned. Table 2 indicates how the calculated and existing Ability Factors are compared with the expected performance on the component score of all PPR’s, then used to determine an assigned Ability Factor ( Based on Table 2 from the Notice to Contractors).

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Created byLast Modified by
William W Brown/PennDOT
on 03/31/2005 at 01:04:34 PM		Booker T Bates/PennDOT
on 02/29/2012 at 02:57:01 PM