You have designed a vertical crest curve which joins a +3% grade and a -4% grade. The design speed is 60 mph and you have determined the curve to be 1100 ft long. Now, you need to determine the layout of the curve when the BVC is located at station 12+50 ft and has an elevation of 825 ft. 17. What is the stationing (ft) of the PVI? 18. What is the elevation (ft) of the PVI? 19. What is the stationing (ft) of the EVC? 20. What is the elevation (ft) of the EVC? 21. What is the vertical distance (ft) between the PVI and the road surface? 22. What is the elevation (ft) of the road surface at the same stationing as the PVI? 23. What is the elevation (ft) of the road surface at station 14+00? 24. What is the stationing (ft) of the high point of the road? 25. What is the elevation (ft) of the high point of the road?

using First Angle Projection Method.  (a) Front View.  (b) Top View.  (c) Right Side View.  (d) Isometric View

Outline sources of error when recording readings and record-keeping by precipitation gauge

Determine the moments of inertia of the shaded area shown with respect to the x and y axes when a = 31 mm.   The moment of inertia with respect to the x-axis is × 103 mm4    ? The moment of inertia with respect to the y-axis is × 103 ​mm4    ?   Note: please consider everything. Refer to the image for more clarity. On occasions, I receive wrong answers!!. Kindly please show Ix & ly and the final answer in "x 103 mm4" in the step by step working out please. Appreciate your time!