Papers by Namatirai Cheure
The aim of the paper is to design a grade separated intersection at Seke Road and Cripps/Dieppe R... more The aim of the paper is to design a grade separated intersection at Seke Road and Cripps/Dieppe Road in Harare, Zimbabwe. During the peak hours on weekdays, congestion and long queues occur at Seke Road and Cripps/Dieppe Roads intersection in Harare, Zimbabwe therefore there is need to improve this intersection. Significant traffic and congestion across urban areas creates a demand for grade separated intersections. The construction of these structures plays a critical role in the development of modern infrastructure due to safety, environmental, and economic reasons. With the increase in traffic there is need for an improved intersection. The scope of the work included an assessment of some of the intersections in Harare where grade separation is feasible, selection of one intersection, design of the grade separated intersection according to appropriate design standards and production of a bill of quantities. The project includes a traffic counting survey which was conducted for the purpose of determining the traffic volumes and hence the justification of upgrading the existing intersection. The methodology included production of a map, traffic counts, collection of secondary data on traffic counts, conducting geotechnical investigation tests and geometric and structural design of the intersection. Geotechnical investigation results were also used to determine the foundation depth of the bridge. The project contains literature of the different types of intersections, the advantages and disadvantages and also the different types of bridges. The traffic data was analysed and the most appropriate intersection design was chosen. The Simple Diamond interchange was designed because it is cost effective as it reduces congestion at Seke Road and Cripps/Dieppe Roads intersection. However the intersection should be further upgraded to a full clover leaf or a three level intersection within the next 20 years so as to avoid congestion again due to high traffic volumes. The interchange is a Simple Diamond interchange which was designed according to South African Standards. The analysis was carried out using Prokon Software, AchiCAD software, Microsoft word, AutoCAD and Microsoft word. A physical model was also made for the design. It is recommended that pre-stressed beams can be cast on the open space available and lifted by cranes to their positions and the grade separated intersection should have more columns for aesthetic reasons.
Proceedings of the EAI International Conference for Research, Innovation and Development for Africa, 2018
This project focused on analyzing and redesigning of Simon Mazorodze/Chitungwiza road intersectio... more This project focused on analyzing and redesigning of Simon Mazorodze/Chitungwiza road intersection in Harare, Zimbabwe. Different types of intersections and the cost effective ways of improving roundabout intersections were analyzed using standard procedure. A 96 hour manual traffic survey was conducted at the intersection to determine the current traffic volumes and current capacity of the intersection and then determination of the current intersection performance. Microsoft office, Spreadsheets and AutoCAD were used for design analysis. The results showed that the intersection was not able to handle the high traffic volumes passing through it, hence the justification of upgrading the current intersection. The most appropriate design was chosen, which is designing of a roundabout with bypass slip lanes according to American Standards. The study concluded that the proposed design is able to cope with the traffic for a design life of 20 years. An overpass is recommended to cater for pedestrians.
Proceedings of the EAI International Conference for Research, Innovation and Development for Africa, 2018
The project focussed on the design of a link road to connect the Beitbridge-Chirundu Highway to H... more The project focussed on the design of a link road to connect the Beitbridge-Chirundu Highway to Harare Drive and Kirkman Road in Harare, Zimbabwe. The proposed link road is approximately 17 km long. The link road will alleviate traffic flowing into Harare by linking the missing portion of Harare drive a ring road to a major highway. A manual traffic count was carried out to determine the percentage of heavy vehicles in transit on the highway. The results were compared to historic traffic counts. The analysis was carried out using QGIS and AchiCAD softwares, Microsoft excel and AutoCAD. The geometric design of the link road and intersection was carried out based on guidelines for Southern Africa roads. The link road and grade separated intersection with a design life of 20 years was designed. It is recommended that traffic flow be diverted and extra caution be taken during the construction.
Segmenting the brt market in unequal societies: lessons for south africa from literature
Southern African Transport Conference 2021, 2021
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Papers by Namatirai Cheure