Evaluation of Zero-length Vertical Curves

Evaluation of Zero-length Vertical Curves
Author: Mark Douglas Wooldridge
Publisher:
Total Pages: 88
Release: 1997
Genre: Curves in engineering
ISBN:

The objectives of the research were to evaluate the use of zero-length vertical curves with respect to TxDOT design practice, construction results, vehicle dynamics, and accident history, and to compare zero-length vertical curves to minimum design vertical curves (as specified by TxDOT). Researchers determined use of zero-length vertical curves using a questionnaire distributed to TxDOT personnel in all 25 districts. Seventy-one percent of the respondents had used zero-length vertical curves. In this study, 20 zero-length vertical curves and 15 minimum-length vertical curves were evaluated. Constraints limited grade change for the vertical curves to a maximum of two percent. Evaluation included surveying the roadway profile, measuring vertical acceleration, and investigating accident information. The results showed that: sight distance is not applicable to sag curves with grade changes below two percent and is applicable to crest curves with grade changes above 0.5 percent and design speeds over 100 km/h; below 0.5 percent grade change, comfort criteria for zero-length and minimum design vertical curves did not exhibit any practical difference; between 1.0 and 0.5 percent grade change, comfort criteria showed unacceptable performance for high speed tests; zero-length vertical curves were more likely to meet drainage grade requirements than were minimum design vertical curves; and accident studies did not reveal any apparent relationship to the type of vertical curve.

Progress in Civil, Architectural and Hydraulic Engineering IV

Progress in Civil, Architectural and Hydraulic Engineering IV
Author: Yun-Hae Kim
Publisher: CRC Press
Total Pages: 1447
Release: 2018-11-22
Genre: Technology & Engineering
ISBN: 1315638568

The International Conference on Civil, Architectural and Hydraulic Engineering series provides a forum for exchange of ideas and enhancing mutual understanding between scientists, engineers, policymakers and experts in these engineering fields. This book contains peer-reviewed contributions from many experts representing industry and academic es

The Civil Engineering Handbook

The Civil Engineering Handbook
Author: W.F. Chen
Publisher: CRC Press
Total Pages: 2898
Release: 2002-08-29
Genre: Technology & Engineering
ISBN: 1420041215

First published in 1995, the award-winning Civil Engineering Handbook soon became known as the field's definitive reference. To retain its standing as a complete, authoritative resource, the editors have incorporated into this edition the many changes in techniques, tools, and materials that over the last seven years have found their way into civil

Roadside Design Guide

Roadside Design Guide
Author: American Association of State Highway and Transportation Officials. Task Force for Roadside Safety
Publisher:
Total Pages: 560
Release: 1989
Genre: Roads
ISBN:

PAVEMENT ENGINEERING

PAVEMENT ENGINEERING
Author: GOSWAMI, SANDIPAN
Publisher: PHI Learning Pvt. Ltd.
Total Pages: 346
Release: 2022-11-01
Genre: Technology & Engineering
ISBN: 9391818153

In road projects, the pavement construction is very expensive and, therefore, the design and subsequent construction must make a proper balance between the cost and the sustainability. During the operation and maintenance period, the costs for routine maintenance (as and when pavement damage occurs) are to be kept as low as possible as there is less control towards cost of the periodic maintenance (mandatory at a contractual interval, normally 5 years). The reduction in cost for routine maintenance will relieve the project authorities from unexpected expenditures. This comprehensive text on Pavement Engineering is up-to-date with industry standards and best practices and offers an exhaustive coverage on design, construction and maintenance of pavements. The book has followed AASHTO Guide for Design of Pavement Structures, 1993, besides meeting latest code provisions and pavement design methods recommended by Indian Roads Congress (IRC) and Bureau of Indian Standards (BIS). This book has all standard topics on the subject, but differs from all other books in respect of following contents: • Pavement Engineering and Highway Geometrics • Design of Flexible Bituminous/Asphalt Pavement • Design of Rigid Concrete Pavement • Construction of Flexible Bituminous/Asphalt Pavement • Construction of Rigid Concrete Pavement • Maintenance of Flexible Bituminous/Asphalt Pavement • Maintenance of Rigid Concrete Pavement • Maintenance of other Road, Drainage and Bridge features This book refers to the web uploaded volume ‘User’s Guide for Computer Applications’ at web site www.roadbridgedesign.com to help readers learn various computer applications in pavement engineering. This book is designed to serve as a textbook for undergraduate and postgraduate students of Civil Engineering, Highway Engineering and Traffic and Transportation Engineering. TARGET AUDIENCE • BE/B.Tech, ME/MS/M.Tech (Civil Engineering and Transportation/ Highway Engineering) • Professionals of Highway/Road Construction Industry

Recent Geometric Design Research for Improved Safety and Operations

Recent Geometric Design Research for Improved Safety and Operations
Author: Kay Fitzpatrick
Publisher:
Total Pages: 144
Release: 2001
Genre: Technology & Engineering
ISBN:

TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 299: Recent Geometric Design Research for Improved Safety and Operations reviews and summarizes selected geometric design research published during the 1990s, particularly research with improved safety and operations implication.

Civil Engineering License Review, 14th Edition

Civil Engineering License Review, 14th Edition
Author: Donald G. Newnan
Publisher: Dearborn Trade Publishing
Total Pages: 724
Release: 2003-09
Genre: Study Aids
ISBN: 9780793185467

A review specifically for the latest version of the Civil Engineering/Professional Engineer Exam. Covers exam topics in 12 sections: Buildings; Bridges; Foundations and Retaining Structures; Seismic Design; Hydraulics; Engineering Hydrology; Water Treatment/Distribution; Wastewater Treatment; Geotechnical/Soils Engineering; and Ideal for the new breadth/depth exam A detailed discussion of the exam and how to prepare for it 335 essay and multiple-choice exam problems with a total of 650 individual questions A complete 24-problem sample exam Updated for 1997 UBC and all of the latest codes Appendix on Engineering Economy Since some states do not allow books containing solutions to be taken into the CE/PE Exam, the end-of-chapter problems do not have the solutions in this book.