UNSYMMETRICAL VERTICAL PARABOLIC CURVE: 1. V₁ station 12 + 200 and elevation 30m. It is required to connect the two tangents with an unsymmetrical vertical parabolic curve 160m. on the side of the back tangent and 120m. on the side of the forward tangent (g₁ = +7% and 92 -4%). The curve must provide a vertical clearance of at least 4.42m. above the right curb of an underpass, the stationing of which is 12 +260. A.) Determine the elevation of the curb; b.) If the curb elevation is 22.6385m., compute the length of the curve on the side of the forward tangent in order to fulfill the requirement; and c.) Compute the stationing of the highest point of the curve for the second condition. 12+200 El. 30 m &+7% -160 m R: 87-49 h=4.42 m -120m+ curb 120.07) -8.4m - 13.2 m (20.04) 4.8m P.T.

Structural Analysis
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ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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UNSYMMETRICAL VERTICAL PARABOLIC CURVE:
1. V₁ station 12 + 200 and elevation 30m. It is
required to connect the two tangents with an
unsymmetrical vertical parabolic curve 160m.
on the side of the back tangent and 120m. on
the side of the forward tangent (g₁ = +7% and
92 = -4%). The curve must provide a vertical
clearance of at least 4.42m. above the right
curb of an underpass, the stationing of which is
12 +260. A.) Determine the elevation of the
curb; b.) If the curb elevation is 22.6385m.,
compute the length of the curve on the side of
the forward tangent in order to fulfill the
requirement; and c.) Compute the stationing of
the highest point of the curve for the second
condition.
12+200
El. 30 m
&+7%
-160 m
Ri
h-4.42 m
-120m+
curb
124260
120.07)
-8.4m
13.2 m
120X.04)
4.8m
P.Z..
Transcribed Image Text:UNSYMMETRICAL VERTICAL PARABOLIC CURVE: 1. V₁ station 12 + 200 and elevation 30m. It is required to connect the two tangents with an unsymmetrical vertical parabolic curve 160m. on the side of the back tangent and 120m. on the side of the forward tangent (g₁ = +7% and 92 = -4%). The curve must provide a vertical clearance of at least 4.42m. above the right curb of an underpass, the stationing of which is 12 +260. A.) Determine the elevation of the curb; b.) If the curb elevation is 22.6385m., compute the length of the curve on the side of the forward tangent in order to fulfill the requirement; and c.) Compute the stationing of the highest point of the curve for the second condition. 12+200 El. 30 m &+7% -160 m Ri h-4.42 m -120m+ curb 124260 120.07) -8.4m 13.2 m 120X.04) 4.8m P.Z..
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