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Publication Number: FHWA-RD-01-164
Date: March 2002

Figure I-13

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Figure I-13: Graphic. Distress map symbols for CRCP (adapted from SHRP 1993). This figure shows 10 CRCP distress map symbols used to indicate various types of distress and their level of severity when sketching pictures of pavement. On a sketch, the symbol would be drawn and the distress type number and its level of severity would be indicated if appropriate. Severity is expressed with the letters L, M, or H, corresponding to low, moderate or high levels of severity. The table below contains the distress number, its name, a description of the symbol, a column to note when the distress severity level should be indicated with the distress number, and a column to note other indications that go with the distress number. (Note that the numbers do not follow numerical order.) 

Distress Number

Distress Name

Symbol Description

Severity Indication

Other Indications

2

Longitudinal cracking

Vertical line at the crack site

L, M, H

Length of crack in meters; write the letter S on the map at the distress site if the crack is sealed

3

Transverse cracking

Horizontal line at the crack site

L, M, H

Number of cracks and length in meters

4a

Map cracking

Rounded plaid/ fishnet pattern

No severity levels

Square meters of distress

4b

Scaling

Rounded plaid/ fishnet pattern

No severity levels

Square meters of distress

5

Polished aggregate

Small diagonal lines

No severity levels

Square meters of distress

6

Popouts

Small ovals drawn at an angle

No severity levels

Number

7

Blowups

Curved line over joints

No severity levels

Number

8

Transverse construction joint deterioration

Small X’s below joint at site of deterioration

L, M, H

Number

11

Patch/Patch deterioration

Shaded square over patched area

L, M, H

Square meters and number of patch; indicate on map an F if flexible or an R if rigid.

12

Punchouts

Two horizontal, parallel lines with diagonal lines drawn between the parallel lines at punchout site

L, M, H

Number

13

Spalling of longitudinal joints

Series of small, vertical circles around the joint

L, M, H

Length in meters

14

Water bleeding and pumping

Arrowhead pattern drawn on the crack

No severity levels

Number of occurrences; length of affected pavement in meters

15

Longitudinal joint seal damage

Small horizontal lines drawn over longitudinal joint

No severity levels

Length of damage in meters

 

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The Federal Highway Administration (FHWA) is a part of the U.S. Department of Transportation and is headquartered in Washington, D.C., with field offices across the United States. is a major agency of the U.S. Department of Transportation (DOT).
The Federal Highway Administration (FHWA) is a part of the U.S. Department of Transportation and is headquartered in Washington, D.C., with field offices across the United States. is a major agency of the U.S. Department of Transportation (DOT). Provide leadership and technology for the delivery of long life pavements that meet our customers needs and are safe, cost effective, and can be effectively maintained. Federal Highway Administration's (FHWA) R&T Web site portal, which provides access to or information about the Agency’s R&T program, projects, partnerships, publications, and results.
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