1. Inside a rectangular area that is 140 feet in the N-S direction, and 300 feet in the E-W direction, draw a contour map using a scale 1"-20' and contour interval of I feet. 2. The closed traverse used for control is; Course LAT DEP Start station A 68'east and 66' south of the north-west comer. AB -32 +161 BC -18 -99 +50 -62 CA The survey information for the stations are: Station A Elevation 75.0 PT AZM DIST ELEV. 1 319 82 81.0 2 08 56 77.0 3 45 90 73.4 4 87 66 71.3 5 246 72 76.1 6 280 67 78.3 NOTES C.L. Stream C.L. Stream C.L. Stream CL. Stream Station B Elevation 71.8 PT AZM DIST ELEV 1 328 115 71.4 2 316 84 692 3 295 57 67.3 4 226 60 61.7 5 04 94 766 6 36 117 80.6 7 22 31 73.0 8 67 69 75.8 9 93 63 73.6 10 | 121 77 71.8 11 | 160 41 69.5 Station Elevation 69.5 PT AZM DIST ELEV. 1 293 52 72.8 2 32 29 693 3 137 31 66.7 4 252 61 71.5 5 264 119 73.6 3. Locate the 0+00 station of highway CL in the far west of the rectangle half way between the N&S. The highway runs due east. Draw in the 50 stations and the road width of the 40 feet 4. Draw a profile of the highway along the CL, using a horizontal scale !"=20' and a vertical scale 1"=104 (going from 60 to 80 elevation). The elevation for the highway is 72.0. 5. Draw cross sections, for every 50 foot station, using a horizontal scale I"-20", and vertical scale 1"-10% (going from 65 to 80 elevation). Determine area of cut or fill by counting boxes. 6. Locate the line of no cut and fill on the plan, if the side slope is 3 to 1. 7. Earthwork Calculations Measurement is done in cubic yards Trapezoidal Rule - Assume that the change in area is constant