Design a vertical summit parabolic curve connecting the two tangent grades to conform with the following safe stopping sight distance specifications.

Q: A symmetrical parabolic curve has tangent grades of +2.8% and -1.6%. An object 105mm high at the…

A: The given data is shown below: Grades=+2.8% and -1.6%Eyesight=1.5mDistance=130m

Q: 1. A grade of -3.7% grade intersects a grade of +2.80% at Station 11 + 488.00 of elevations 122.50…

A: G1 = -3.7% G2 = 2.8% PI Station = 11+488 PI elevation = 122.5 Vd (design velocity) = 60Km/h = 60…

Q: 1. Two vertical parabolic curves have been connected to form a roadway by three gradients: -5.30 %,…

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Q: 3.)  A -4% grade meets a 7% grade at station 2 + 185 of elevation 150 m. The lengths are L1 = 70 m.…

A: Downward gradient=-4% Upward gradient=7% Elevation=150 m L1=70 m, L2=50 m.

Q: Determine the minimum length of a vertical curve between a +1.48% grade and a +6.2% grade for a road…

A: Solution:-

Q: The deflection angle of 3° curve is 50°25. If the PC is located at the station (331+38.75),…

A: Simple curve: Curves are frequent bends in communication lines such as roadways, railways, and water…

Q: A vertical summit curve has tangents of +4% and -2%. The allowable rate of change of grade is 0.3%…

A: Solution: Rate of change of gradient=0.3% a) γ=g2-g1LL=4+2×1000.3L=2000 m   b)…

Q: A parabolic sag curve has a sight distance of 115m. The tangent grades of the curve are -2% and +3%…

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Q: A parabolic sag curve has a sight distance of 118 m. the tangent grades of the curve are -3% and…

A: Given Data Sight distanceS=118 mThe gradients are N1=-3%N2=5% Here it is asked to calculate the…

Q: PROBLEM 1 A SIMPLE CURVE HAVING A CENTRAL ANGLE OF 40 DEGREES AND EXTERNAL DISTANCE OF 20M CONNECTS…

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Q: 12. Find the minimum length of curve for the following scenarios. Entry Grade Exit Grade Design…

A: Solution: To find minimum length of curve  for A: Entry grade = 3% Exit grade    = 8% Design speed =…

Q: A +4% grade line intersects a -2 % grade line at station 6+800, where the elevation is 642.40 m. as…

A: When a route changes direction from right to left or its alignment changes from up to down, curves…

Q: A horizontal curve is designed for a two-lane road in mountainous terrain. The following data are…

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Q: The sight distance of a sag parabolic curve is 116.85 m. long with grade tangents of -1.98% and…

A: Parabolic curve

Q: 2. A vertical parbolic curve was design in order to have a clear sight distance of 120 m. The grade…

A: Given: Sight Distance= 120 m  Grade lines intersection   Station = 9+000 Elevation = 160.50 m…

Q: A symmetrical vertical summit curve has tangents of -6% and +4%. The allowable rate of change of…

A: Given data- The initial grade is -6% The final grade is +4% The allowable rate of change of grade is…

Q: Determine the minimum length of a vertical curve between a -1.78% grade and a -7.8% grade for a road…

A: Answer  we are given Grade G1 = -1.78% Grade G2 = -7.8% Design speed V = 110 Km/hr reaction time Rt…

Q: Q3: A horizontal curve is to be designed for a two-lane road in mountainous terrain. The following…

A: Given Data: The intersection angle of the curve is, ∆=30° The tangent length of the curve is, T=150…

Q: A +3% grade intersects a -3.4% grade at station 2+990 of elevation 52.30m. Design a vertical summit…

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Q: A circular curve connects two tangents that intersect at an angle of 48° . The point of intersection…

A: Given Data: Tangent intersect angle = 48° PI station = 28+900 Design speed (u)= 90 km/h Take, e=…

Q: ical curve is going to be designed to join a 0% grade with a +5% grade at a section of a highway.…

A: as g1<g2curve is sag curve…

Q: A vertical summit curve has a back tangent of +2% and a forward tangent of -3% intersecting at…

A: Solution n1=+2% n2=-3% Elevation= 200 m Design speed =80 kph Coefficient f=0.30 Raction time t= 2.5…

Q: Given the profile below determine: A) The length of the vertical curve needed to make the highest…

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Q: The radius of a horizontal circular curve is3100m. The design speed is 80km/hr and the design…

A: As per Bartleby policy I can only solve 3 subparts so please post the remaining questions again if u…

Q: A simple circular curve is specified with a 12° degree (arc basis) horizontal curve and e=0.08. A…

A: Degree of horizontal curve = 120 Super elevation (e) = 0.08 Radius of curve (R) = 500 ft Coefficient…

Q: A symmetrical parabolic summit curve connects two grades of +6% and -4%. It is to pass though a…

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Q: PROBLEM 1 A SIMPLE CURVE HAVING A CENTRAL ANGLE OF 40 DEGREES AND EXTERNAL DISTANCE OF 20M CONNECTS…

A: Given that, Central angle = 40° External distance of two tangents connection is 20M

Q: On a two-lane road with 12-ft lanes, a horizontal curve is designed for 50 mi/h with a…

A: Given data: 12 ft- two lane road Superelevation = 10% PI= 220+48 PC= 216+74 speed= 50mile/hr fs=…

Q: 2. A VERTICAL PARBOLIC CURVE WAS DESIGN IN ORDER TO HAVE A CLEAR SIGHT DISTANCE OF 120 M THE GRADE…

A: Take L>SSDL=NS22H+2h2L=0.0812022×1.5+2×0.12L=242.6>S ok

Q: A vertical curve is going to be designed to join a 0% grade with a +5% grade at a section of a…

A: G1 = 0% = 0 G2 = 5% = 0.05

Q: Exercise 5 A transition curve is required for a single carriageway road with a design speed of 100…

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Q: A- A horizontal curve is required to connect two tangents of a road with deflection angle of 50°…

A: Horizontal curves are circular curves that are provided for changing the direction or the alignment…

Q: A VERTICAL PARBOLIC CURVE WAS DESIGN IN ORDER TO HAVE A CLEAR SIGHT DISTANCE OF 120 M. THE GRADE…

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Q: A 600ft equal tangent sag vertical curve has the PVC at station 170 +00 and elevation 1000ft. The…

A: Given that, Equal tangent = 600 ft = L PVC station = 170 +00 C= 1000 ft G1 = -3.5 % G2 = +0.5%

Q: Q 5: A horizontal curve on which the maximum safe speed is 87 km/h, the radius R=350 m and the super…

A: Given maximum safe speed = 87 km/h Radius = 350m e = .03 increased speed = 100km/h

Q: A horizontal Curve is designed for a two lane mountainous terrain. The following data are known.…

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Q: 2. A vertical parbolic curve was design in order to have a clear sight distance of 120 m. The grade…

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Q: 2. A vertical parabolic curve has a sight distance of 120m. The curve has tangent grades of +2.6%…

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Q: A sag vertical curve is designed to join a -3% to a +3% grade. If the design speed is 40mph, what is…

A: SSD is one of the road design sight distance. Sight distance rule for the controlled condition, the…

Q: An equal-tangent vertical curve is designed for the year 2030 for a design speed of 70 mi/h to…

A: Given information: Design speed = v = 70 mi/h Stopping Sight Distance (S) for design speed of 70…

Q: 1. Two vertical parabolic curves have been connected to form a roadway by three gradients: -5.30 %,…

A: "Since you have posted multiple questions. We will solve the first two questions for you. To get the…

Q: JA horizontal curve on a two-lane highway (12-ft lanes) has PC at station 124 + 00 and PT at station…

A: Horizontal curves: The curve provides a transition between two tangent strips of the roadway,…

Q: A horizontal curve is to be designed for a two-lane road in mountainous terrain. The following data…

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Q: For the safe road design and smooth traffic flow, combination of transition and circular curve will…

A: Defelction angle :I=180-70-80=30°so,Radius is R=v2127e+f=11021270.05+0.15=476.38mso,

Q: A vertical curve is formed on a two lane undivided highway between the tangents of 1 gradient + 1…

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Q: 2 A VERTICAL PARBOLIC CURVE WAS DESIGN IN ORDER TO HA CLEAR SIGHT DISTANCE OF 120 M. THE GRADE LINES…

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Q: A 3.5˚ curve is to be designed on a highway with a design speed of 60 mi/h. Spiral transition curves…

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Q: In a designed reversed curve the length of the common tangent is 150m thus the angle of intersection…

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Curve setting

A curve is a turn that is provided horizontally or vertically in the design of highways, railways, and runways. A curve connects two straight lines that are separated by the deflection angle. It helps to change the direction and alignment of the highways, railway tracks, and runways. Therefore, the gradual change in their alignment is made by using a curve to provide comfort to the passengers and this also provides an easy turn to change the direction of the moving vehicle.