Section 3: Pavement Management Information System
Anchor: #i1001247Pavement Management Information System (PMIS) Defined
The PMIS is an automated system for storing, retrieving, analyzing, and reporting pavement condition information. It can be used to retrieve and analyze pavement information to compare maintenance and rehabilitation treatment alternatives, monitor current pavement conditions, and estimate total pavement needs. Detailed descriptions of the PMIS are given in the electronic manual file for the Design Division's Pavement Management Information System (PMIS) User’s Manual.
Anchor: #i1001259Data Collected
PMIS contains pavement evaluation data on all major pavement types used in Texas, including asphalt surfaced pavement, continuously reinforced concrete pavement and jointed concrete pavement. These types of data include the following:
- distress data—describes surface defects
- ride quality data—measures pavement roughness
- deflection data—measures the structural strength of the pavement section
- skid resistance data—measures surface friction using the TxDOT Skid Truck.
Important Distress Data
Some of the most important data collected are visual distress and rutting data. This is basic information that management at the section level may use to determine pavement maintenance needs. Skid data, when applied in conjunction with accident studies, can also indicate maintenance priorities for needed spot work with maintenance forces. It can also give valuable information for developing the preventive maintenance program. The following table lists the visual distresses that are collected for the three basic pavement types.
|
Pavement Type |
Distress |
How Rated |
|---|---|---|
|
Flexible Pavement—Asphaltic Concrete Pavement on Surface (ACP) |
Shallow Rutting |
Percent (of wheel path length) |
|
ACP |
Deep Rutting |
Percent (of wheel path length) |
|
ACP |
Patching |
Percent (of lane area) |
|
ACP |
Failures |
Total number |
|
ACP |
Alligator Cracking |
Percent (of wheel path area) |
|
ACP |
Block Cracking |
Percent (of lane area) |
|
ACP |
Longitudinal Cracking |
Length per station |
|
ACP |
Transverse Cracking |
Number per station |
|
ACP |
Raveling (optional) |
None, low, med., or high |
|
ACP |
Flushing (optional) |
None, low, med., or high |
|
Continuously Reinforced Concrete Pavement (CRCP) |
Spalled Cracks |
Total number |
|
(CRCP) |
Punchouts (failures) |
Total number |
|
(CRCP) |
Asphalt Patches |
Total number |
|
(CRCP) |
Concrete Patches |
Total number |
|
(CRCP) |
Average Crack Spacing |
Feet |
|
Jointed Concrete Pavement (JCP) |
Failed Joints and Cracks |
Total number |
|
(JCP) |
Failures |
Total number |
|
(JCP) |
Shattered Slabs |
Total number |
|
(JCP) |
Slabs With Longitudinal Cracks |
Total number |
|
(JCP) |
Concrete Patches |
Total number |
|
(JCP) |
Joint Spacing |
Feet |