COVENTRY INNER RING ROAD: DESIGN AND CONSTRUCTION.

1970 ◽  
Vol 45 (2) ◽  
pp. 199-230
Author(s):  
H AIZLEWOOD ◽  
NB HEATHCOTE
Materials ◽  
2021 ◽  
Vol 14 (8) ◽  
pp. 2034
Author(s):  
Jerzy Trzciński ◽  
Emilia Wójcik ◽  
Mateusz Marszałek ◽  
Paweł Łukaszewski ◽  
Marek Krajewski ◽  
...  

The paper presents the basic problem related with practical application of carbonate rocks in construction: are carbonate aggregates produced from such rocks favorable for building engineering, particularly for road design and construction? To resolve this problem, (1) the geological-engineering properties of aggregates are presented, (2) the correlation between petrographic and engineering parameters is shown, and (3) a strict correlation between the geological-engineering properties and the freezing-thawing and crushing resistance is recognized. This knowledge has allowed to assess the usefulness of asphalt concrete (AC) made from dolomite and limestone aggregates in the design and construction of road surface structures. The petrography was characterized using optical microscopy and scanning electron microscopy (SEM) coupled with energy-dispersive X-ray spectroscope (EDS). Engineering properties were determined in accordance with European and Polish norms and guidelines. Statistical and design calculations were performed using dedicated software. The petrographic properties, and selected physical and mechanical parameters of the aggregates, were tested to show their influence on the freezing–thawing and crushing resistance. Strong functional relationships between the water adsorption, and the freezing–thawing and crushing resistance have been observed. Aggregate strength decreased after saturation with increasing concentrations of salt solutions. Calculations of AC fatigue durability and deformation allow for reducing the thickness of the road surface structure by about 20% in comparison to normative solutions. This conclusion has impact on the economy of road design and construction, and allows for a rational utilization of rock resources, which contributes to sustainable development of the construction industry.


2011 ◽  
Vol 164 (3) ◽  
pp. 165-179 ◽  
Author(s):  
John Fox ◽  
Donald Bell ◽  
Graham Edmond ◽  
Peter Cummings ◽  
James Langstraat

Author(s):  
Mukesh M S ◽  
Y B Katpatal

Pedestrian safety has become a major issue in most of the developing countries. Thousands of pedestrians are killed each year but still pedestrian safety remains the most ignored parameter in road design. Even after several studies, pedestrian behavior, which is a complex phenomenon remains poorly understood. Interaction and pedestrian response, especially at the intersections, is a serious concern in road safety. The primary objective of the study is to develop a Pedestrian Safety Index (PSI) by identifying the parameters on which pedestrian safety depends. These parameters have been classified as dependent parameters like pedestrian behavior, street infrastructure, and surrounding environment; and independent parameters like a signal break, crossing location, crossing type and crossing time. Pearson's correlation coefficient and ANOVA Analysis are performed to find the relationship between independent and dependent parameters. Analytical Hierarchy Process (AHP) and Multiple Linear Regression (MLR) techniques have been used to prepare the PSI model. The model depicts safety indices at different intersections along the Ring Road which is the major transportation corridor of the city. The data for the analysis was extracted from actual video footages of CCTV installed at the intersections and high-resolution satellite images. The study concludes that the PSI is found to be less at all the intersections along Ring Road and very less in the western segments of the Ring Road Corridor. The values of Pedestrian safety indices are helpful in designing the infrastructure facility at the intersection considering pedestrian safety.


Author(s):  
Xu-dong Wang ◽  
Guang-li Zhou ◽  
Hai-yan Liu ◽  
Qing Xiao

1970 ◽  
Vol 47 (3) ◽  
pp. 423-434
Author(s):  
N RAYMAN ◽  
BV REDKNAP ◽  
H AIZLEWOOD ◽  
NB HEATHCOTE ◽  
P VAVASOUR ◽  
...  

Jurnal HPJI ◽  
2019 ◽  
Vol 5 (2) ◽  
pp. 119-128
Author(s):  
Alfiani Yogaturida Isnaini ◽  
Latif Budi Suparma ◽  
Suryo Hapsoro Tri Utomo

Abstract The city ring road of Wonogiri Regency should be constructed based on a pavement design which ensure safety, convenience, but still economical. For this reason, a road pavement design method is needed to be applied in this road design process. The MDP 2017 and AASHTO 1993 road pavement design methods are methods that are often used in Indonesia to design concrete slab for pavement. This study uses both methods to determine the thickness of the concrete slab on the pavement of the Wonogiri Regency City Ring Road. The results of this study indicate that the concrete slab thickness for pavement calculated by MDP 2017 is 31 cm, while that calculated with AASHTO 1993 is 32.25 cm. The difference in the thickness of the concrete plates obtained from these two methods is relatively small. Keywords: road pavement, pavement design, concrete slab, road pavement thickness  Abstrak Jalan lingkar kota Kabupaten Wonogiri harus dibangun berdasarkan rancangan perkerasan jalan yang aman, nyaman, namun tetap ekonomis. Untuk itu, diperlukan suatu metode perancangan perkerasan jalan yang tepat untuk diterapkan pada proses perancangan jalan ini. Metode-metode perancangan perkerasan jalan MDP 2017 dan AASHTO 1993 merupakan metode-metode yang sering digunakan di Indonesia untuk perancangan tebal pelat beton untuk perkerasan jalan. Studi ini menggunakan kedua metode tersebut untuk menentukan tebal pelat beton pada perkerasan jalan lingkar kota Kabupaten Wonogiri. Hasil studi ini menunjukkan bahwa tebal pelat beton untuk perkerasan jalan yang dihitung dengan MDP 2017 adalah 31 cm, sedangkan yang dihitung dengan AASHTO 1993 adalah 32,25 cm. Beda tebal pelat beton yang diperoleh dari kedua metode ini relatif kecil. Kata-kata kunci: perkerasan jalan, perancangan perkerasan, pelat beton, tebal perkerasan jalan


2011 ◽  
Vol 4 (1) ◽  
pp. 146
Author(s):  
Celina Hiromi Tamaki Ota ◽  
Cristiane Mansur de Moraes Souza

O tema deste artigo é planejamento ambiental urbano recente de Londrina (PR). A pergunta central é: como a sensibilidade ambiental urbana pode servir de restrição para instalação do projeto anel do emprego? O objetivo principal do artigo é, pois, discutir como a plataforma ambiental foi elaborada para permitir a localização do projeto anel do emprego. Ademais são objetivos também: 1. Elaborar o mapa de sensibilidade ambiental da micro-bacia hidrográfica do ribeirão Lindóia, Londrina (PR), para localizar as áreas homogêneas como forma de respeitar os seus limites ambientais. Para demonstrá-lo, dividimos o artigo em quatro seções: numa primeira seção a introdução contextualiza sócio-ambientalmente a área de estudo e apresenta uma revisão de literatura; na segunda em materiais e métodos explica-se como a plataforma ambiental foi elaborada a partir da análise da sensibilidade ambiental e apresenta-se o núcleo temático água e microbacias e o núcleo temático solo e geomorfologia; a terceira parte mostra a definição do sitio do projeto anel do emprego. Na quarta seção escrevemos a conclusão.Palavras - chave: sensibilidade ambiental urbana, plataforma ambiental, Londrina.   The Platform Environmental and Employment Project Ring of Londrina (PR)  ABSTRACTThe subject of this article is recent urban environmental planning of Londrina (PR). The main question is: how urban environmental issues may define the site for the a ring road project “anel do emprego” ? Anel do Emprego is a ring road design created to provide employment opportunities to a specific area, by alloying a land use zone different than the current master plan.The main purpose of the article is, therefore, to demonstrate how the environmental plan was elaborated to define the site of the job ring project “anel do emprego”. The methodology was made to elaborate the urban vulnerability of the hydrographic basin of Lindóia River to locate with classes of high and low urban vulnerability. The theoretical focus lay on the emphasis of an urban planning to be thought by an integrated skeen. In order to demonstrate it, we divide the article in 4 sections: the first one is about the geographically of the area and the landmark theoretician basis; the second is methods and material which explains how the environmental plan was made, area the analysis of the Londóia River; the third part is about the definition of the site for the ring-job project and on the fourth section we write the final considerations.Keywords: urban environmental issues; environmental plan; vulnerability.  


2017 ◽  
Vol 43 (3) ◽  
pp. 1177
Author(s):  
A. Kouki ◽  
D. Rozos

The fine grained Plio-Pleistocene sediments encountered along the Patras Ring Road project (PRR) were distinguished into two lithological units, the Upper Geotechnical and the Lower Geotechnical Unit, based on the detailed engineering geological – geotechnical mapping, at a scale of 1:5000, on fieldwork, as well as on data gained from the boreholes drilled during the design and construction of the project. These units are distinguishable, stratigraphically successive and present basic differences in lithological composition, consistency and permeability and therefore different mechanical behaviour during construction.


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