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Vertical Curve Fundamentals | Highway Alignment and Design 7 лет назад


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Vertical Curve Fundamentals | Highway Alignment and Design

Symmetric parabolic vertical curves are the most common type of vertical curves. These curves are described by the parabolic equation and have some special characteristics we need to be aware of: 1. Symmetry means that half of the curve is on each side of the PVI 2. Distances are input in stations and grades in percent 3. Distances are measured horizontally (i.e., not along the grade of the road) 0:00 Overview 1:37 Crest and Sag Curves 1:50 Point of Vertical Intersection (PVI or VPI) 2:10 Point of Vertical Curvature (PVC or VPC) 2:24 Point of Vertical Tangency (PVT or VPT) 2:36 x (Distance along Curve) 3:01 Y (Elevation on the Curve) 6:32 Parabolic Curve Basics 7:15 Parabolic Curve for a Vertical Curve 8:40 External Distance #VerticalCurves #VerticalAlignment #HighwayDesign #DanielFindley

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