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The Development Of A Simple Instrument For Measuring Pavement Roughness And Predicting Pavement Rideability
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Book Synopsis The Development of a Simple Instrument for Measuring Pavement Roughness and Predicting Pavement Rideability by : GF. Hayhoe
Download or read book The Development of a Simple Instrument for Measuring Pavement Roughness and Predicting Pavement Rideability written by GF. Hayhoe and published by . This book was released on 1990 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on the results of recent research, it is possible to develop performance specifications for a simple instrument that would measure profile-type roughness in only one wheelpath--instead of two, as in the profilometer--and which would compute a roughness index that is as highly correlated with pavement rideability measurements as the roughness indexes derived from the full profile.
Book Synopsis Surface Characteristics of Roadways by : W. E. Meyer
Download or read book Surface Characteristics of Roadways written by W. E. Meyer and published by ASTM International. This book was released on 1990 with total page 581 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Pavement Roughness and Rideability by :
Download or read book Pavement Roughness and Rideability written by and published by . This book was released on 1964 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Pavement Roughness and Rideability Field Evaluation by : Michael S. Janoff
Download or read book Pavement Roughness and Rideability Field Evaluation written by Michael S. Janoff and published by Transportation Research Board National Research. This book was released on 1988 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Prediction of Pavement Ride Quality from Profile Measurements of Pavement Roughness by : MS. Janoff
Download or read book The Prediction of Pavement Ride Quality from Profile Measurements of Pavement Roughness written by MS. Janoff and published by . This book was released on 1990 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper summarizes the results obtained in five different states when profiles were used to develop transforms that predict rideability from pavement roughness. The five individual state transforms are very similar and have similar accuracy and validity. As a result, one transform--derived from the combined data from all five states--can be used to accurately predict rideability from profile measures of roughness in any of the five states.
Book Synopsis Pavement Roughness and Rideability by : Michael S. Janoff
Download or read book Pavement Roughness and Rideability written by Michael S. Janoff and published by Transportation Research Board National Research. This book was released on 1985 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measuring Road Roughness and Its Effects on User Cost and Comfort by : Thomas D. Gillespie
Download or read book Measuring Road Roughness and Its Effects on User Cost and Comfort written by Thomas D. Gillespie and published by ASTM International. This book was released on 1985 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Pavement Evaluation Using Road Meters by :
Download or read book Pavement Evaluation Using Road Meters written by and published by Highway Research Board. This book was released on 1973 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many instruments are available for measuring pavement roughness. Some of these instruments are costly and obtain very detailed data. Most require that pavement condition be measured at low speeds, thus demanding that production rates be quite low. For many years, engineers have been searching for a device that gives the required information but is inexpensive to produce and operate. The road meter, first developed by Max P. Brokaw, is a simple device that essentially measures the relative movement of the rear axle of a passenger car with respect to the frame of the car. This device permits obtaining a large amount of data and can in fact be operated by 1 person in a passenger car, although generally 2 individuals are required. Because the instrument is new, a need has existed to bring together engineers and researchers who are using the device to discuss the experience of various agencies in obtaining pavement condition data by this technique.
Download or read book Road & Transport Research written by and published by . This book was released on 2001 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Development and Evaluation of an Inertial Based Pavement Roughness Measuring System by : Fengxuan Hu
Download or read book Development and Evaluation of an Inertial Based Pavement Roughness Measuring System written by Fengxuan Hu and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: ABSTRACT: Roughness is an important indicator of pavement riding comfort and safety. It is a condition indicator that should be carefully considered when evaluating primary pavements. At the same time, the use of roughness measurements plays a critical role in the pavement management system. There are many devices used for roughness evaluation. The major tools used for road roughness quantify are the road profilers. In the thesis research, in order to obtain useful pavement surface condition data for pavement evaluation, an inertial based pavement roughness measuring system was developed with the combination of modern sensor technology and computer technology. The research will focus on the development of new method to get the profile in order to improve the repeatability of the inertial based pavement roughness system, the hardware design and the software development which is used for data sampling and data analysis. Finally maximum entropy spectral analysis method was used to evaluate the road profile spectrum. In order to get evaluate the accuracy and correction of the laser profiler system, different roughness devices (including Dipstick, direct type profiler and the laser profiler developed) were operated in the test sites. The research focused on several performance measures, such as repeatability (before and after new method analysis), impact of operating speed and sample interval, correlativity and etc. IRI from these devices were analyzed to evaluate the correlativity between these devices. Some regression models were developed in this research. Test results show that the new method can improve the repeatability of the profiler system. The laser profiler system has good repeatability and the operating speed and sample interval do not have a significant impact on the inertial based roughness measuring system. With the reliable results, the system is ready to be used in the field application within the speed and sample interval range. Through the spectrum analysis, it shows that the spectrum has a qualitative relation with pavement roughness conditions.
Download or read book Report written by and published by . This book was released on 1964 with total page 1026 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Pavement Roughness Evaluations Using a Mays Ride Meter by : Jack R. Croteau
Download or read book Pavement Roughness Evaluations Using a Mays Ride Meter written by Jack R. Croteau and published by . This book was released on 1981 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Guidelines for Conducting and Calibrating Road Roughness Measurements by : Michael W. Sayers
Download or read book Guidelines for Conducting and Calibrating Road Roughness Measurements written by Michael W. Sayers and published by . This book was released on 1986 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: Road roughness is gaining increasing importance as an indicator of road condition, both in terms of pavement performance, and as a major determinant of road user costs. This paper defines roughness measurement systems hierachically into four groups, ranging from profilometric methods (2 groups), through response type road roughness measuring systems (RTRRMS's), and, subjective evaluation. The International Roughness Index (IRI) is defined, and the programs for it's calculation are provided. The IRI is based on simulation of the roughness response of a car travelling at 80 km/h. The report explains how all roughness measurements can be related to this scale, also when travelling at lower speeds than 80 km/h. The IRI emerges as a scale that can be used both for calibration and for comparative purposes.
Book Synopsis Measuring, Characterizing, and Reporting Pavement Roughness of Low-speed and Urban Roads by : Steven M. Karamihas
Download or read book Measuring, Characterizing, and Reporting Pavement Roughness of Low-speed and Urban Roads written by Steven M. Karamihas and published by . This book was released on 2019 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pavement smoothness (or roughness) is used by state highway agencies for monitoring network condition and other purposes such as assessing construction quality and optimizing investments in preservation, rehabilitation, and reconstruction. States are also required to report the International Roughness Index (IRI) as an element of the federal Highway Performance Monitoring System (HPMS). Because IRI is not measured directly but is calculated as the mechanical response of a generic quarter-car, traveling at 50 mph, to the elevation profile of the roadway, there are concerns about using current practices for estimating roughness of low-speed and urban roads. Because of the unique features of low-speed and urban roads, research was needed to identify or, if necessary, develop means for appropriately measuring, characterizing and reporting pavement roughness of these roads. National Cooperative Highway Research Program (NCHRP) Research Report 914: Measuring, Characterizing, and Reporting Pavement Roughness of Low-Speed and Urban Roads reviews the practices for roughness measurement and the unique features of urban and low-speed roadways, and it evaluates the use of existing inertial profilers for such measurements. The report also proposes revisions to American Association of State Highway and Transportation Officials standard specifications and practices addressing inertial profiler certification and operations.
Author :Roads and Transportation Association of Canada. Pavement Design and Evaluation Committee. Pavement Output Measurements Subcommittee Publisher : ISBN 13 : Total Pages : pages Book Rating :4.:/5 (617 download)
Book Synopsis Evaluation of the Car Road Meter by : Roads and Transportation Association of Canada. Pavement Design and Evaluation Committee. Pavement Output Measurements Subcommittee
Download or read book Evaluation of the Car Road Meter written by Roads and Transportation Association of Canada. Pavement Design and Evaluation Committee. Pavement Output Measurements Subcommittee and published by . This book was released on 1971 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1991 with total page 1380 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Pavement Texture Measurement Study by : E. D. Howerter
Download or read book Pavement Texture Measurement Study written by E. D. Howerter and published by . This book was released on 1980 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
