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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