forward tangent of +6% was designed to intersect a back tangent of -3% on a proposed highway so as to maintain clearance allowed under the bridge which crosses a perpendicular underpass. A 200m curve lies on the side of the back tangent while a 200m lies on the side of the forward tangent. The stationing and elevation of the grades intersection is 12 + 530.20 and 100m respectively. The centerline of the bride falls at station 12 + 575.20. The elevation of the underside of the bridge is 117.48m. Determine the sight distance of the curve of the 10-m wide bridge if the height of the observer being 1.2-m and the object being 0.60m.
forward tangent of +6% was designed to intersect a back tangent of -3% on a proposed highway so as to maintain clearance allowed under the bridge which crosses a perpendicular underpass. A 200m curve lies on the side of the back tangent while a 200m lies on the side of the forward tangent. The stationing and elevation of the grades intersection is 12 + 530.20 and 100m respectively. The centerline of the bride falls at station 12 + 575.20. The elevation of the underside of the bridge is 117.48m. Determine the sight distance of the curve of the 10-m wide bridge if the height of the observer being 1.2-m and the object being 0.60m.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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A forward tangent of +6% was designed to intersect a back tangent of -3% on a proposed highway so as to maintain clearance allowed under the bridge which crosses a perpendicular underpass. A 200m curve lies on the side of the back tangent while a 200m lies on the side of the forward tangent. The stationing and elevation of the grades intersection is 12 + 530.20 and 100m respectively. The centerline of the bride falls at station 12 + 575.20. The elevation of the underside of the bridge is 117.48m.
Determine the sight distance of the curve of the 10-m wide bridge if the height of the observer being 1.2-m and the object being 0.60m.
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