2020-A9 - Vertical Curves 1

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Simon Fraser University *

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130

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Mechanical Engineering

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Feb 20, 2024

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GEOM 2020 Assignment 9 Page 1 of 2 GEOM 2020 Survey Computations 2 Assignment 9: Vertical Curves 1 Set A Set B Lab Date Wed Mar 9, 2022 Fri Mar 11, 2022 Due Date Tues Mar 22, 2022 Thurs Mar 24, 2022 Either submit an Excel Workbook or a scanned pdf with answers to the assignment questions to the Assignment 9 Learning Hub dropbox, which will remain open until the beginning of the following week’s lab. Note do not use the Excel VBA Vertical Curve tools for this assignment. 1. The following diagram shows a vertical profile with two proposed symmetrical vertical curves. Using the information in the table below, calculate the lengths of the 2 curves (L1 and L2), the elevation of Vertex 2, grade g 2 % = g 3 % and the station and elevation of BVC2. (5 marks) Point Station (m) Elevation (m) BVC1 1+285.138 72.348 EVC1 1+553.638 - V2 1+822.388 - EVC2 1+966.588 75.315
GEOM 2020 Assignment 9 Page 2 of 2 2. Calculate the elevation of the EVC and each of the even 25 m station intervals for the following symmetrical vertical curve design. (4 marks) g 1 = -1.25% g 2 = +3.45% L = 115.750 m BVC Station = 2+487.560 BVC Elevation = 46.098 m 3. Calculate the station and elevation of the BVC, the EVC and the lowest point of the following symmetrical vertical curve. (4 marks) L = 375.00 m g 1 = -2.60 % g 2 = +0.50 % Vertex Stn = 3+640.00 Vertex Elevation = 905.350 m 4. Calculate the stationing, elevation and tangent grade for the BVC, EVC and even 40 m station intervals for the following symmetrical vertical curve data (5 marks). L = 148.500 m g 1 = +4.00 % g 2 = 2.50 % Vertex Stn = 2+189.000 m Vertex Elevation = 157.830 m Determine the station and elevation of the maximum point (2 marks)
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