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

Figure I-12

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Figure I-12: Graphic. Distress map symbols for jointed concrete pavements (adapted from SHRP 1993). This figure shows 14 JCP 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

1

Corner breaks

Arc drawn in corner

L, M, H

Number each of the corner breaks

3

Longitudinal cracking

Vertical line at 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

4

Transverse cracking

Horizontal line at crack site

L, M, H

Number of cracks and length in meters

5a

Joint seal damage of transverse joints

Shaded box around the horizontal joint where damage is occurring

L, M, H

Number of areas of damage

5b

Joint seal damage of the longitudinal joints

Shaded box around the vertical joint where damage is occurring

No severity levels

Number of areas of damage

6

Spalling of longitudinal joints

Series of small, vertical circles around the joint

L, M, H

Length in meters

7

Spalling of transverse joints

Series of small, horizontal circles around the joint

L, M, H

No. of joints and length in meters

8a

Map cracking

Rounded plaid/ fishnet pattern

No severity levels

Square meters of distress

8b

Scaling

Rounded plaid/ fishnet pattern

No severity levels

Square meters of distress

9

Polished aggregate

Small diagonal lines

No severity levels

Square meters of distress

10

Popouts

Small ovals drawn at an angle

No severity levels

Number

11

Blowups

Curved line over joints

No severity levels

Number

12

Faulting of transverse joints and cracks

Straight line

No severity levels

Length of faulting in millimeters

15

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

16

Water bleeding and pumping

Arrowhead pattern drawn on the crack

No severity levels

Number of occurrences; length of affected pavement 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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