A forward tangent of +6% was designed to intersect a back tangent of -3% at a proposed underpass along Epifanio de los Santos Avenue so as to maintain a minimum clearance allowed under a bridge which crosses perpendicular to the underpass. A 200 m. curve lies on the side of the forward tangent. The stationing and elevation of the grade intersection is 12 + 530.20 and 100 m. respectively. The center line of the bridge falls at station 12 + 575.20. the elevation of the underside of the bridge is 117.48. a. Determine the clearance of the bridge at the left side if it has a width of 10 m. b. Determine the clearance of the bridge at the right side. c. Determine the clearance of the bridge at the center of the bridge.
A forward tangent of +6% was designed to intersect a back tangent of -3% at a proposed underpass along Epifanio de los Santos Avenue so as to maintain a minimum clearance allowed under a bridge which crosses perpendicular to the underpass. A 200 m. curve lies on the side of the forward tangent. The stationing and elevation of the grade intersection is 12 + 530.20 and 100 m. respectively. The center line of the bridge falls at station 12 + 575.20. the elevation of the underside of the bridge is 117.48.
a. Determine the clearance of the bridge at the left side if it has a width of 10 m.
b. Determine the clearance of the bridge at the right side.
c. Determine the clearance of the bridge at the center of the bridge.
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