In the dynamic and expanding urban environment of Slothsberg, a new highway (Snailpace Highway) is to...
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In the dynamic and expanding urban environment of "Slothsberg", a new highway ("Snailpace Highway") is to be constructed over the existing "Dillydally Highway". The following conditions apply to the site: Snailpace Highway and Dillydally Highway intersect at right angles (90 degrees). . As the highways are grade-separated (Snailpace Highway bridges over Dillydally Highway), there is a desirable clearance height of 6m between the two highways. Both highways are at a level grade (constant elevation). • • Snailpace Highway is oriented east-west at an elevation of 162m. The bridge structure is such that the bridge girder thickness is 2m (measured from the road surface to the bottom of the girder). • A single-lane ramp is to be constructed to allow eastbound traffic to go southbound. A single horizontal curve, with a central angle of 90 degrees, is to be used (no transition curve is designed). The design speed for the curve is set at 70km/h and a required superelevation is 4%. Figure 1 and Figure 2 present diagrams of the alignment of the two highways. SNAILPACE HIGHWAY Horizontal Agent SNAILPACE HIGHWAY Vertical Algement PVC, Eastbound PVT, Figure 1: Horizontal Alignment of Snailpace Highway and Dillydally Highway Grade Samp Rump PVC₂ DELLYDALLY ANOWIN Southbound CT DELLYDALLY PVT₂ HIGHWAY Figure 2: Vertical Alignment of Snailpace Highway and Dillydally Highway In the dynamic and expanding urban environment of "Slothsberg", a new highway ("Snailpace Highway") is to be constructed over the existing "Dillydally Highway". The following conditions apply to the site: Snailpace Highway and Dillydally Highway intersect at right angles (90 degrees). . As the highways are grade-separated (Snailpace Highway bridges over Dillydally Highway), there is a desirable clearance height of 6m between the two highways. Both highways are at a level grade (constant elevation). • • Snailpace Highway is oriented east-west at an elevation of 162m. The bridge structure is such that the bridge girder thickness is 2m (measured from the road surface to the bottom of the girder). • A single-lane ramp is to be constructed to allow eastbound traffic to go southbound. A single horizontal curve, with a central angle of 90 degrees, is to be used (no transition curve is designed). The design speed for the curve is set at 70km/h and a required superelevation is 4%. Figure 1 and Figure 2 present diagrams of the alignment of the two highways. SNAILPACE HIGHWAY Horizontal Agent SNAILPACE HIGHWAY Vertical Algement PVC, Eastbound PVT, Figure 1: Horizontal Alignment of Snailpace Highway and Dillydally Highway Grade Samp Rump PVC₂ DELLYDALLY ANOWIN Southbound CT DELLYDALLY PVT₂ HIGHWAY Figure 2: Vertical Alignment of Snailpace Highway and Dillydally Highway
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To design the bridge for Snailpace Highway over Dillydally Highway and the singlelane ramp the follo... View the full answer
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Financial Markets and Institutions
ISBN: 978-0077861667
6th edition
Authors: Anthony Saunders, Marcia Cornett
Posted Date:
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