Parabolic arches are known to have greater strength than otherarches. A bridge w

Question

Parabolic arches are known to have greater strength than otherarches. A bridge with a supporting parabolic arch spans 60 ft witha 30 ft wide road passing underneath the bridge. In order tohave a minimum clearance of 16 ft, what is the maximumclearance? If anyone could help me with what this question is asking,and/or what information is given, it would be a big help. Thanks. Will reward responses with points. Parabolic arches are known to have greater strength than otherarches. A bridge with a supporting parabolic arch spans 60 ft witha 30 ft wide road passing underneath the bridge. In order tohave a minimum clearance of 16 ft, what is the maximumclearance? If anyone could help me with what this question is asking,and/or what information is given, it would be a big help. Thanks. Will reward responses with points.

Explanation / Answer

So the following is a crude rendition of a road (the flat lineat the bottom) and a bridge going over it (the kinda curvything) So you know that the length of the road is 30 ft. The lengthof the arc is 60 ft. The distance from the edge of the road to thearc is 16 ft (in the verticle direction). Using that informationthey want you to find the distance from the middle of the road tothe middle of the arch (in the verticle direction).
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Hope that helps! (Sorry about the crappy ascii drawing)

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