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This report provides guidance for the selection, use, and maintenance of cable barrier systems. While cable barrier systems have been in use for more than 70 years, their use has been on the rise and is expected to continue in the future. The increase in use of cable barrier systems has been attributed to the success rate in keeping vehicles from crossing the median, reducing roadway departures, and decreasing impact severity. Due to advancements in cable barrier system technology, installation and repair costs are lower and cable barrier use has increased in varying roadway environments. Safety studies, although limited, have shown that cable barriers help reduce those median cross-over collisions that lead to some of the most severe head-on type crashes. This document will be of particular interest to design, maintenance, traffic, and safety engineering professionals.
TRB's National Cooperative Highway Research Program (NCHRP) Report 656: Criteria for Restoration of Longitudinal Barriers explores the identification of levels of damage and deterioration to longitudinal barriers that require repairs to restore operational performance.
Various methods of assessing noise, loudness, and noise annoyance are reviewed and explained; sources, types, and intensities of traffic noise are noted; typical means of abatement and attenuation are described; design criteria for various land uses ranging from low-density to industrial are suggested and compared with the results of previous BBN and British systems for predicting annoyance and complaint; and a design guide for predicting traffic noise, capable of being programmed for batch and on-line computer applications, is presented in form suitable for use as a working tool. A flow diagram describes the interrelationships of elements in the traffic noise prediction methodology, and each element is discussed in detail in the text. The text is presented of a tape recording that takes the listener through a series of traffic situations, with such variables as traffic distance, flow velocity, distance, outdoors and indoors, and presence or absence of absorbers and attenuators.
Also available online via the Web pages of the TRB Cooperative Research Programs (www4.trb.org/trb/crp.nsf).
Maximize your efficiency while studying for the PE Civil CBT exam by pairing the PE Civil Study Guide with Michael R. Lindeburg’s PE Civil Reference Manual PE Civil Study Guide, Seventeenth Edition provides a strategic and targeted approach to exam preparation so that you gain a competitive edge. With hundreds of entries containing helpful explanations, derivations of equations, and exam tips, the Study Guide connects the NCEES exam specifications for all five PE Civil exams to the NCEES Handbook, approved design standards, and PPI’s civil reference manuals. The Study Guide is organized to make the most of your time and is an essential tool for a successful exam experience. Relevant sections from the NCEES Handbook, design standards, and PPI’s reference manuals are clearly indicated in both summary lists for each exam specification and in each of the detailed entries covering a specific concept or equation. Referenced PPI Products: PE Civil Reference Manual Structural Depth Reference Manual for the PE Civil Exam Construction Depth Reference Manual for the PE Civil Exam Transportation Depth Reference Manual for the PE Civil Exam Water Resources and Environmental Depth Reference Manual for the PE Civil Exam Referenced Codes and Standards: 2015 International Building Code (ICC) A Policy on Geometric Design of Highways & Streets (AASHTO) AASHTO Guide for Design of Pavement Structures (AASHTO) AASHTO LRFD Bridge Design Specifications Building Code Requirements & Specification for Masonry Structures (ACI 530) Building Code Requirements for Structural Concrete & Commentary (ACI 318) Design & Construction of Driven Pile Foundations (FHWA) Design & Construction of Driven Pile Foundations—Volume I (FHWA) Design & Control of Concrete Mixtures (PCA) Design Loads on Structures During Construction (ASCE 37) Formwork for Concrete (ACI SP-4) Foundations & Earth Structures, Design Manual 7.02 Geotechnical Aspects of Pavements (FHWA) Guide for the Planning, Design, & Operation of Pedestrian Facilities (AASHTO) Guide to Design of Slabs-on-Ground (ACI 360R) Guide to Formwork for Concrete (ACI 347R) Highway Capacity Manual (TRB) Highway Safety Manual (AASHTO) Hydraulic Design of Highway Culverts (FHWA) LRFD Seismic Analysis & Design of Transportation Geotechnical Features & Structural Foundations Reference Manual (FHWA) Manual on Uniform Traffic Control Devices (FHWA) Minimum Design Loads for Buildings & Other Structures (ASCE/SEI 7) National Design Specification for Wood Construction (AWC) Occupational Safety & Health Regulations for the Construction Industry (OSHA 1926) Occupational Safety & Health Standards (OSHA 1910) PCI Design Handbook: Precast & Prestressed Concrete (PCI) Recommended Standards for Wastewater Facilities (TSS) Roadside Design Guide (AASHTO) Soils & Foundations Reference Manual—Volume I & II (FHWA) Steel Construction Manual (AISC) Structural Welding Code—Steel (AWS)
TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 353: Inspection and Maintenance of Bridge Stay Cable Systems identifies and explains various inspection and maintenance techniques for bridge stay cable systems. It discusses both short- and long-term approaches. The report information on methods for inspections and assessments, including nondestructive testing and evaluation procedures; repair and retrofit; methods for control of cable vibrations, including rainwind vibrations; stay cable fatigue and failure; effectiveness of various inspection and repair methods; limitations of available technologies; and trends and recommendations for future study.