This report describes the thickness design of roadway shoulders and is based on mechanistic principles of stress/strain analysis. Both flexible and rigid shoulders can be designed with this method. The shoulders may be adjacent to either rigid or flexible pavements. All combinations are possible, including the use of a widened rigid mainline lane w
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Volumes 1, 2, and 3 of this report are guide booklets for administrators, road engineers, and road builders respectively. These guide booklets were developed to provide information on the use of four stabilization treatments, i.e., lime, asphalt, cement, and lime-fly ash in the construction of low-volume roads. Volume 4, contained herein, documents
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This report presents results of an investigation conducted to evaluate the performance of "retrofit" load transfer devices installed at a test site on I-75 in Georgia. Devices installed include dowel bars placed in slots and Double V devices placed in holes drilled along joints. Measured deflection data at the test site are compared with deflection
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Volumes 1 and 3 of this report are guide booklets for administrators and road builders respectively. Volume 4 of this report documents the use and cost-benefits of four stabilization treatments, i.e., lime, asphalt, cement, and lime-fly ash in the construction of low-volume roads. Volume 2, contained herein, is a guide booklet for the road engineer
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Volume 1, contained herein, is an Executive Summary for administrators to provide help in understanding the factors involved in using soil stabilization for low-volume roads. The decision making factors such as traffic, soils, climate, stabilizer selection, design procedures, construction equipment, and quality control have been outlined. Volumes 2
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Volumes 1 and 2 of this report are guide booklets for administrators and road engineers respectively. Volume 3, contained herein, is a guide booklet for road builders. These guide booklets were developed to provide information on the use of four stabilization treatments, i.e., lime, asphalt, cement, and lime-fly ash in the construction of low-volum
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This report presents results of an investigation conducted to develop placement tolerances for dowels at concrete pavement joints. A theoretical analysis of dowel misalignment was attempted. The purpose of the analysis was to compute restraint stresses induced in the concrete pavement for different levels of dowel misalignment. However, because of
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United States. Federal Highway Administration. Construction and Maintenance Division
1986-05-01
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AASHTO, M146, Terms Relating to Subgrade, Soil-Aggregate, and Field Materials defines "Base" as "the layer used in a pavement system to reinforce and protect the subgrade or subbase." It, therefore, is the layer of material which lies immediately below the wearing surface. This definition applies whether the wearing surface is bituminous or concret
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United States. Federal Highway Administration. Bureau of Motor Carrier Safety
1986-05-01
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This publication represents the 1984 compilation of accident reports submitted to the Federal Highway Administration's Bureau of Motor Carrier Safety (BMCS) by motor carriers of property in Interstate or Foreign commerce. These accident reports are a vital source of information upon which the BMCS relies in administering its regulatory and enforcem
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The research project was conducted to evaluate the performance of an inexpensive non-contact roughness measuring device, Roughness Surveyor. as well as the potential use of this device as a calibration reference for Response-Type Road Roughness Measuring (RTRRM) systems. A correlation was also conducted between RTRRM systems from three different St
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The research project was conducted to evaluate the performance of an inexpensive non-contact roughness measuring device, Roughness Surveyor, as well as the potential use of this device as a calibration reference for Response-Type Road Roughness Measuring (RTRRM) systems. A correlation was also conducted between RTRRM systems from three different St
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As part of a continuing project to evaluate and improve maintenance activities a study on slope maintenance and slide restoration was undertaken. The problem of slope maintenance and slide restoration was identified by a number of States as a major maintenance problem involving a considerable expenditure of maintenance funds. These guidelines are d
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The Road Profilometer Meeting was held in Ann Arbor in September 1984. In this meeting, 11 agencies used their profilometer equipment to provide measures over 27 test sites. Overall, 13 independent instruments were used, including static rod and level measures on 10 of the sites. Analyses; of the profiles obtained in the experiment were used to det
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The research has 2 objectives: to assess the effectiveness of methods of signing intersections to inform drivers of travel direction and prevent wrong way movements and, to develop guidelines for the use and placement of signs to prevent wrong way movements at typical intersections. The Final Report presents a stand-alone summary of the material co
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A chemically-modified sulfur ca1led SULPHLEX (a trademark of Southwest Research Institute) was studied. This binder consists of 70 percent elemental sulfur and 30 percent of a combination of hydrocarbons which chemically react with molten sulfur. This chemical reaction allows the polymeric, molten sulfur to retain, at least to some extent, certain
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Several methods of analysis and design of piles under lateral loading are in use. Presumptive values that suggest allowable loads, but very conservative ones, are included in some manuals of practice. Batter piles may be employed with an assumption, not entirely correct, that no lateral load is taken by vertical piles. Several rational methods, in
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Le laboratoire Central des Ponts et Chaussees, Translated by Resse, Lymon C.
1986-03-01
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The construction, inspection, and testing of bored piles (drilled shafts, drilled piers, caissons) as practiced by government agencies in France are discussed in detail. Some of the topics that are treated in the document are contracts, methods of making the excavation, casings and liners, rebar cages, tests for completed piles, and methods of repa
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Investigation of Warning Signs for Median Crossovers; ITDS: A Data Base Driven Interface to Traffic Models Using a Microcomputer; Accident Analysis of Highway Narrow Bridge Sites
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