The forward tangent of 6% was designed to intersect a back tangent of -3% at a proposed underpass along the Cainta Floodway interchange to maintain a minimum clearance allowed under a bridge that crosses perpendicular to the underpass. The stationing and elevation of the grade intersection are 12+530.200 and 100m, respectively. The centerline of the bridge falls at station 12+575.200. The elevation of the underside of the bridge is 117.48m. a) Determine the clearance of the left side bridge, if the bridge has a width of 8m and the parabolic curve is symmetrical with L = 300m b) Determine the clearance of the bridge at the lowest point of the curve. c) Determine the clearance of the bridge at the lowest point of the curve if the parabolic curve is asymmetrical with L₁= 200m and L2= 100m

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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4. The forward tangent of 6% was designed to intersect a back tangent of -3% at a proposed underpass along the Cainta
Floodway interchange to maintain a minimum clearance allowed under a bridge that crosses perpendicular to the
underpass. The stationing and elevation of the grade intersection are 12+530.200 and 100m, respectively. The
centerline of the bridge falls at station 12+575.200. The elevation of the underside of the bridge is 117.48m.
a) Determine the clearance of the left side bridge, if the bridge has a width of 8m and the parabolic curve is
symmetrical with L = 300m
b) Determine the clearance of the bridge at the lowest point of the curve.
c) Determine the clearance of the bridge at the lowest point of the curve if the parabolic curve is asymmetrical
with L1= 200m and L2= 100m
Transcribed Image Text:4. The forward tangent of 6% was designed to intersect a back tangent of -3% at a proposed underpass along the Cainta Floodway interchange to maintain a minimum clearance allowed under a bridge that crosses perpendicular to the underpass. The stationing and elevation of the grade intersection are 12+530.200 and 100m, respectively. The centerline of the bridge falls at station 12+575.200. The elevation of the underside of the bridge is 117.48m. a) Determine the clearance of the left side bridge, if the bridge has a width of 8m and the parabolic curve is symmetrical with L = 300m b) Determine the clearance of the bridge at the lowest point of the curve. c) Determine the clearance of the bridge at the lowest point of the curve if the parabolic curve is asymmetrical with L1= 200m and L2= 100m
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