181 04 A horizontal curve along the proposed road from Al Ansak to Al Sifoain connects two tangent lines with bearings s

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181 04 A Horizontal Curve Along The Proposed Road From Al Ansak To Al Sifoain Connects Two Tangent Lines With Bearings S 1 (70.22 KiB) Viewed 32 times

181 04 A horizontal curve along the proposed road from Al Ansak to Al Sifoain connects two tangent lines with bearings shown below intersects at STA 5 +000. Table 3: Bearing of the Tangent Lines of the Proposed Highway Forward Bearing N 15°E N 45°E Line AB BC Table 4: Curve design specifications Variables Values Design radius 700 m Design superelevation rate 6% Normal crossfall 2% с 0.5 m/s Elevation of the median edge 25 m ASL Transverse slope of shoulders shall be the same as that of the carriageway a. Check whether the design radius is adequate. If not, recommend the appropriate radius of the curve (Use increments/multiples of 50 m). (2 marks) b. Design the application of the superelevation (at PC and PT). Use increments/multiples of 5 meters for Lr and TR values. (3 marks) Table 5: Application of superelevation at PC Points A&B E&F Stations Cross-section Elevation of inner carriageway edge Elevation of outer carriageway edge D с A&B Table 6: Application of superelevation at PT Points E&F D Stations Cross-section Elevation of inner carriageway edge Elevation of outer carriageway edge Show your calculations: c. Draw the plan of the proposed highway and the corresponding application of the superelevation at the entry and exit of the curve (follow the attached template for the drawing format, APPENDIX 2). Use A3 paper. Orientation should be LANDSCAPE. You may use AUTOCAD or other software for drawing. (3 marks) Marking scheme: Drawing/creativity (1.5), Accuracy (1), formatting and spelling (0.5)