Q4: A road is to be redesigned using a parabolic vertical curve to provide clearance beneath a bridge (see Figure below). The (PC OR PVC) has chainage 1140.00m, with an RL of 125.536m. A bridge at chainage 1300.00 has an RL = 128.5m at its lowest point. You must provide 4.5m clearance from the underside of the bridge, and the parabola will finish with a succeeding gradient, G 2 = +3.6%. G1= ? 1. What is the length of the curve? 2. What is the initial gradient G1?( PC Ch 1140 RL 125.536 G1 = ? J 11 Point PVC PVT Easting (m) 122.8 326.1 Here Ah = 4.5 P Northing (m) 40.2 76.3 Ch 1300 RL 128.5 G2 = +3.6% PT RL=124.00 Elevation (m) 125.536 ?

Q: An underpass crossing a reinforced concrete bridge along the Shaw Blvd. has a downward grade of -4%…

A: g1 = -4%g2 = 8%Sta (PVI) = 7 + 700 Elv (PVI) = 70 m

Q: The curved section of a highway in Southern California connects two tangents at station 20+75.00 at…

A: given data Given, Speed = 70 mph = 102.67 ft/s Station of PI = 20 + 75.00 Station of PT = 23 + 00 ∆…

Q: A vertical sag curve joins a -3.0% downgrade with a 2.0% upgrade. The Chainage at Vertical…

A: Given Data:g1=-3%g2=2.0%Chainage at vertical intersection point = 1100mreduced level = 122mchainage…

Q: 92 STA(96+00), STA(100+00), STA(104+00 elevation at 5280.00 ft above mean sea leve the curve.

A:

Q: mum clearance under the bridge is 5 m and the elevation of the bottom 78.1. Determine the following:…

A: g1 = -4%g2 = 8%Sta (PVI) = 7 + 700 Elv (PVI) = 170 m

Q: A-4.4% grade meets a 7.9% grade at a vertex (El. 136.35m) directly under an overpass bridge having…

A: Given, g1=-4.4 %g2=7.9 % A=12.3 % Tangent Elevation at PVI = 136.35m Bridge Elevation = 156.79 m

Intersection Design

An intersection is a location where two or more roads or railways meet or join. The traffic movement is controlled at the intersection that depends on its design and type. It governs the operation, efficiency, speed, capacity, and safety of the highways, airways, and railways. The movement of the pedestrian causes hazards and delays at the intersection.