Reproducibility of Texas Department of Transportation Falling Weight Deflectometer Fleet

Rocha, S.; Tandon, Vivek; Nazarian, S.; University of Texas at El Paso. Center for Highway Materials Research

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Reproducibility of Texas Department of Transportation Falling Weight Deflectometer Fleet

2001-09-01
By Rocha, S. ; Tandon, Vivek ; Nazarian, S.

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English

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Creators:

Rocha, S. ; Tandon, Vivek ; Nazarian, S.

Rocha, S. ; Tandon, Vivek ; Nazarian, S. Less -
Corporate Creators:

University of Texas at El Paso. Center for Highway Materials Research
Corporate Contributors:

Texas. Dept. of Transportation ; United States. Federal Highway Administration

Texas. Dept. of Transportation ; United States. Federal Highway Administration Less -
Subject/TRT Terms:

[+]

Calibration Data Collection Falling Weight Deflectometers Geophones Load Cells Pavements Remaining Life Repeatability Reproducibility Sensors Statistical Analysis Texas
Publication/ Report Number:

RR-1784-1
Resource Type:

Tech Report
Geographical Coverage:

Texas ; United States

Texas ; United States Less -
TRIS Online Accession Number:

01389541
Corporate Publisher:

University of Texas
Abstract:

The degree of accuracy with which the Falling Weight Deflectometer (FWD) data are collected and analyzed has a direct impact on the conclusions drawn in many aspects of TxDOT operation. TxDOT owns 15 units, the largest FWD fleet of any single transportation agency in the world. TxDOT purchased its first unit in 1983 and has added additional FWDs on three- or four-year cycles over a span of 15 years. Therefore, the current fleet includes FWD units of different vintages and units with different components. Both good repeatability and reproducibility are considered to be of major importance for an adequate interchangeability of the FWD fleet. The first two tasks of the project consisted of evaluating the reproducibility and repeatability of the fleet and study the impact of the components on the reproducibility and repeatability of a given FWD. This report contains a summary of the results from these two tasks.
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PDF
Collection(s):

US Transportation Collection
Main Document Checksum:

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urn:sha256:aee4e7949d2105088e60334925591af5c0249c7c9f1ec0525dc6b8fed7e548ef
Download URL:

https://rosap.ntl.bts.gov/view/dot/42216/dot_42216_DS1.pdf
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Reproducibility of Texas Department of Transportation Falling Weight Deflectometer Fleet

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