1. What is Pavement Condition Index?

The Pavement Condition Index (PCI) is a numerical rating between 0 and 100 that indicates the condition of a pavement surface. It is widely used in pavement management systems to assess pavement performance and plan maintenance activities.

2. How Does the Calculator Work?

The calculator uses the PCI formula:

Where:

• \( PCI \) — Pavement Condition Index (0-100)
• \( D \) — Total deduct value from pavement distresses
• \( A \) — Adjustment factor for distress types and severity

Explanation: The PCI calculation deducts points from a perfect score of 100 based on the type, severity, and quantity of pavement distresses observed.

3. Importance of PCI Calculation

Details: PCI is essential for pavement management, helping transportation agencies prioritize maintenance, allocate resources efficiently, and extend pavement service life through timely interventions.

4. Using the Calculator

Tips: Enter the total deduct value (D) and adjustment factor (A) based on pavement distress survey data. Both values must be positive numbers, with A greater than zero.

5. Frequently Asked Questions (FAQ)

Q1: What do different PCI ranges indicate?
A: 85-100 = Excellent, 70-85 = Good, 55-70 = Fair, 40-55 = Poor, 25-40 = Very Poor, 0-25 = Failed.

Q2: How is the deduct value (D) determined?
A: D is calculated by summing deduct values from various distress types observed during pavement surveys, considering density and severity.

Q3: What factors affect the adjustment factor (A)?
A: A depends on the number of distress types, their severity levels, and the interaction between different distress types in the pavement section.

Q4: How often should PCI be calculated?
A: Typically annually or biennially for network-level management, and more frequently for critical pavement sections or after major weather events.

Q5: Can PCI be used for all pavement types?
A: Yes, PCI methodology is applicable to asphalt, concrete, and composite pavements, though distress identification criteria may vary.