For a 4:1 Slope The

Question 1: For a 4:1 slope cut: 321 ft contour must be at least (0.5*4 = 2 ft) from the edge of the playing field. 322 ft contour must be at least (1.5*4 = 6 ft) from the edge of the playing field. 323 ft contour must be at least (2.5*4 = 10ft) from the edge of the playing field. 324 ft contour must be at least (3.5*4 = 14ft) from the edge of the playing field. For a 6:1 slope fill: 320 ft contour must be at least (0.5*6 = 3ft) from the edge of the playing field. 319 ft contour must be at least (1.5*6 = 9ft) from the edge of the playing field. 318 ft contour must be at least (2.5*6 = 15ft) from the edge of the playing field.

317 ft contour must be at least (3.5*6 = 21ft) from the edge of the playing field.

316 ft contour must be at least (4.5*6 = 27ft) from the edge of the playing field.

Question 3. 1. The change of elevation from A to B is 677.1-670.3=6.8ft. The distance between A and B is 170ft. So the grade = 6.8/170=4%.

2. Distance along the road for each 1 feet in elevation change will be 170/6.8=25 feet (300 inches).

3. To attain a side slope of no more than 15:1, we need to make sure that all the circle points are under the square points in the following example figure. The square points are the intersection between the 15 feet distance from the edge of the road and every one-foot elevation change line. Then each foot in the side slope will correspond to more than 15 feet distance, which is more than 15:1 side slope.

4. Calculation for road crossing.

Point A (677.1)

Slope 0.01 677

Cross Section at Point A

Point A (677.1) 677

Grade 4% x

Section along Road 0.1  0.04  x  2.5 feet x Example Figure to explain side slope. Solution to Question 3: