Given two chords xy and yz of 135 ft each marked on an existing curve to determine the radius. The perpendicular distance between y and the chord xz is 15 ft. Determine the radius of the curve and the angle set out from xz to get a line to the center of the curve.





What will be an ideal response?


Since it is known that the chord xy = 135 ft and yw = 15 ft, The length of xw can

be found using the Pythagorean theorem as follows:



Solve for the radius, R, using the Pythagorean theorem, knowing the length of xw

and that xc = R and wc = R – 15.



Solve for the deflection angle from xz to the center of the curve,

cos ? = (xw/xc) = (134.16/607.50) = 0.220846

? = 77.2412?

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