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Find the value of the long curve tangent distance, if the tangent length of short and long curves were given as 23.21m and 65.87m. The total deflection is 67˚54ꞌ and the deflection angle at short curve is given as 28˚43ꞌ.

Find the value of the long curve tangent distance, if the tangent length of short and long curves were given as 23.21m and 65.87m. The total deflection is 67˚54ꞌ and the deflection angle at short curve is given as 28˚43ꞌ. Correct Answer 112.06m

The long curve tangent distance can be determined by, T = tl + (ts+tl)* sin θ1/ sin θ. On substitution, we get T = 65.87 + (23.21+65.87)* sin 28˚43ꞌ / sin 67˚54ꞌ T = 112.06 m.

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