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Publication Number: FHWA-RD-98-085

LTPP Guide to Asphalt Temperature Prediction and Correction

LTPP Manual for Falling Weight Deflectometer Measurements: Operational Field Guidelines

Version 3.1, August 2000

A comprehensive field manual for FWD testing. Although it was developed for research-grade data collection, and therefore contains elements that may not be appropriate for "production" testing, it contains a wealth of information on FWD operations.

Part 1 (1.3 MB)

Part 2 (1.5 MB)

Part 3 (1.2 MB)

LTPP Resilient Modulus Test Protocols

LTPP has developed two laboratory protocols for resilient modulus testing:

Table of Contents


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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United States Department of Transportation - Federal Highway Administration