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Question: Using the survey data provided including the following files (Wg31º system), write a fitting conclusion :- Proj 1Q1- (2024).kcd Proj 1Q1- (2024).bot Proj 1Q1- (2024).mal Proj 1Q1- (2024).tr2 Proj 1Q1- (2024).mmb Annexure A.pdf (image file) Annexure A.jpeg (image file) Which must be accessed and downloaded from: - ‘Moodle’ – ‘Computer applications 3A’ – ‘Project 1’ – ‘Question 1’ The Topographical survey has extensively covered the area by means of an approx. 30m wide strip survey along the proposed route, which includes all natural and artificial features and existing services along the Examiner: Mr A Raghubar Computer Applications 3A (CPTA301) 2024 Semester I Page 2 of 6 road. This will serve as important information to the design and layout of the new tar road. The portion of road which is to serve as a taxi route has an expected length of approximately 5.0km upon completion. However, you are required to perform a full Road design utilising the Model maker and Road maker software to the following design specifications for a length of approximately 1.8 – 2.0km:- Design specifications for Single lane carriageway: Design speed 50km/hr Lane width 2.5m single lane Road camber - 2.5% left and right Kerb data Type: MK4 Shoulder width 1.5m slope= +4% Side slopes Cut= 1: 1 Fill= 1: 1.5 Trapezoidal Drain specifications slope 1= 1:1 width= 0.40m slope 2= 1:100 width= 0.20m slope 3= 1:1 width= 0.40m Layer works specifications: First (Top) layer: width= 2.5m thickness= 0.04m Second layer: width= 2.6m thickness= 0.10m Third layer: width= 2.7m thickness= 0.14m Road reserve= 15m Compaction factor= 0.90 Where the above design specifications cannot be satisfied, the values may be adjusted accordingly within reason, however any such changes must be justified in your report.
Based on the survey data of the Wg31º system, the following conclusions can be drawn: The topographical survey shows extensive coverage of the proposed area with a focus on a strip survey along the route which takes into account all natural and man-made features. It provides a solid foundation for planning and designing the new tar road. The proposed road, which will serve as a taxi route, has an estimated length of 5km. Using Model maker and Road maker software, an essential part of the design involving a stretch of 1.8 – 2.0km has been targeted for detailed design as per the specified design parameters and guidelines. The design for the single lane carriageway has been structured to fit a design speed of 50km/hr with a lane width of 2.5m and a road camber of 2.5% on both sides. Due attention has been given to the MK4 kerb design and the 1.5m sloped shoulder to facilitate ease of vehicle movement and safety. The side slopes designed as per the provided specifications will ensure stability and safety of the road. In addition, the trapezoidal drain design contributes to the adequate drainage system in light of the environmental and weather conditions of the area. The three-layered specifications outlined are appropriate to robustly support the road and ensure longevity and durability. However, there might be areas where provided design specifications might not be fulfilled due to topographical challenges or other on-ground realities. Adjustments within acceptable reasons might be required. But such alterations will only be executed after providing solid justification and ensuring that they won't compromise on the road's efficiency, safety, and longevity. Finally, it is anticipated that a road reserve of 15 meters and a compaction factor of 0.90 will provide ample safety buffer and structural integrity to the constructed road. Therefore, the provided survey data aids greatly in designing a road that is aligned with user needs and environmental parameters, and the use of Model Maker and Road Maker software furthers the cause by facilitating precision in design.
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