Department of Civil and Environmental Engineering
CEE 316
Surveying Engineering
Homework 5
Horizontal and Vertical Curves
1- Use Wolfpack to compute the values required to layout the horizontal and vertical curve of project 2. Include a copy of the printout, and keep one copy for field work in project 2.
2- Solve the following problems of the textbook:
24-2 arc definition only
Similar to 24-4, using D = 3( 40’, I = 24(20’, and PI station = 50 + 62.48
Similar to 24-7, using D = 3( 10’, I = 32(30’, and PI station = 29 + 64.20 ft. Use the deflection angle method.
3- Why is a parabola rather than a circular arc used for vertical curves on grade lines used for vehicular travel?
4- Field conditions require a highway curve to pass through a fixed point. Compute a suitable equal-tangent vertical curve and full station elevations if g1 = -3.5%, g2 = +0.5%, VPI elevation 870 ft at station 55 + 00. fixed elevation 872.75 ft at station 55+ 00.
5- What is the minimum length of a vertical curve to provide 402 m sight distance if it connects the grades +0.73 and – 1.20. Use the equations given in the lectures, and not the ones in the book.
6- Solve problems: 25-3 and 25-21 of the textbook.
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