A primary runway is being designed for a new airport to serve airport approach category B. As part of this work it is required to design two con- secutive vertical curves (a crest vertical curve followed by a sag vertical curve) to be located midway along the length of the runway. The design should satisfy all the grade and minimum length requirements.
If conditions are such that the crest vertical curve connect grades of +.5% and +1.5%, determine all the properties of both curves that will be necessary to set out the curves. The elevation and station of the point of intersection of the two tangents of the crest vertical curve are 556.50ft and 595+45.00, respectively, and the distance between the points of intersections of the vertical curves is 975ft.