Determine the required length of superelevation runoff

Reference no: EM13310072

A simple highway curve is planned to connect two horizontal tangents that intersect at sta. 2500+00.00 at an external angle of 52°. For a design speed of 60 mi/h and a curve radius of about 1.25 times the minimum allowable, calculate (a) the design rate of superelevation and (b) the required length of superelevation runoff. Assume a four lane undivided highway and 10-ft lanes. Clearly state any other assumptions that you think are needed.

Reference no: EM13310072

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