Design a vertical summit parabolic curve connecting two tangent grades, a 5% grade intersecting a -3.4% grade at station 1 + 990 with an elevation 42.30 meters. The parabolic curve shall conform with the following safe stopping sight distance requirements. Design velocity = 60 kph Height of driver’s eye from the road pavement = 1.37 meters Height of an object over the pavement ahead = 100 mm. Perception/reaction time = 0.75 second Coefficient of friction between the road pavement and the tires = 0.15 Determine the following: Stopping sight distance The length of the curve The elevation of the highest point on curve.

Q: An old equal-tangent crest vertical curve was designed with a PVI at station 117+45 and elevation of…

A: An equal tangent crest vertical curve is as below The point PVC is called as the initial tangent…

Q: A vertical curve is required for a 1st class 3x3 highway section with entering and exiting grades of…

A: The entering and exiting grades of + 5.10% and -6.40%, respectively.The point of intersection of the…

Q: An SVC connects a -4% grade to a +4% grade. The curve goes under a pedestrian bridge at PVI. The…

A: Given:Vertical clearanceSight distanceHeight of drivers eyeHeight of objectTo find: Length of curve.

Q: A horizontal curve has a design speed limit of 45 mph (66 ft/s). What is the SSD in ft? This…

A: Given data: Design speed, V=45 mph Radius from the centerline, R=1200 ft Lane width, w=14 ft   For…

Q: 3. In a given simple curve, the value of the degree of curve is 5 degrees. The coefficient of…

A: Curves can be used to make a gradual change in direction or orientation in the alignment. Curves in…

Q: Problem 2 For the beam shown in the figure A) Draw the shear-force and bending-moment diagrams for…

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Q: The point of intersection (P.I ) of two tangent lines is station 11 000 + 66 . The following data…

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Q: The sag vertical curve has a back tangent grade of -3% and a forward tangent of +2% is to be…

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Q: A 4% grade intersects a -2.6% gradw at station 1 +990 of elevation 42.30 m. Design a vertical summit…

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Q: B-Unequal-Tangent Parabolic (Vertical) Curve: Example: A grade g1 of -2% intersects g2 of +1.6% at a…

A: Solution: Point A STA 85 + 00: Elev. = 743.24+2(2) = 747.24' Point B STA 90 + 00: Elev. =…

Q: A vertical parabolic curve has grades of + 4% and 2%, respectively, which intersects at station…

A: Answer  we are given G1 = 4%  G2 = -2% PI STA = 2+100 m  stopping sight distance = 150 m…

Q: Q3) An engineering has designed a vertical curve of length (250m) to connect (-4%) grade with a…

A: The engineer has designed the vertical curve length= 250m Grade of the road is (-4%) and (+3%)…

Q: A 4.5 % grade intersects a - 2.6% grade at station 1 +990 of elevation 42.30 m. Design a vertical…

A: Given data, Design speed (V) = 56kph G= 4.5%= 0.045 n= 4.5-(-2.6) = 7.1% h1=1.37m h2= 0.1m f= 0.13…

Q: Q1- The data below for existing vertical crest curve , find the length of curve and the location and…

A: Consider the given data Consider equation of vertical curve For point A on curve, station=100230,…

Q: AA vertical summit curve have grades of +4%and -3%which intersects a station 20+040. If the stopping…

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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: A 500-ft curve, grades of g₁-3.50% and 92-1.75%, VPI at station 38+00, and elevation 560.00 ft,…

A: A sag valley curve is given with Grade, g1 =-3.50% and g2 = -1.75%  VPI = 38+00  Elevation = 560 ft…

Q: Given a vertical alignment connecting a -4% grade with a +2% grade with the PVC station at 34+64…

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Q: A simple horizontal (circular) curve has a deflection angle of 45. The curve is within a highway…

A: NOTE:- Since it is not mentioned to answer any particular question. So as per our guidelines we are…

Q: You have designed a vertical crest curve which joins a +3% grade and a -4% grade. The design speed…

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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 parabolic curve has a sight distance of 130m. The curve has tangent grades of +2.8% and…

A: S = 130 m G1 = 2.8%G2 = -1.6%h1 = 1.08 mh2 = 0.5 m

Q: You are required to set up a vertical curve for a highway alignment. Gradient of the backward and…

A: As per our guidelines we can solve one question only or the first three sub-parts only. If you need…

Q: An existing vertical curve on a highway joins a +4.8% grade with a -4.8% grade. If the length of the…

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Q: he vertical summit curve has a tangent grades of +2.8% and -1.6%. A public road user whose eyesight…

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Q: (TRAFFIC AND HIGHWAY ENGINEERING) A highway segment has an equal-tangent sag curve and a horizontal…

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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: Q3/ Given the following vertical curve data: pvl at 19+00,L-500 ft g1=+2.5%, g2= -1% and elevation…

A: Given:- The stationing of point PVI = (19+00) The length of the curve = 500 ft The initial grade of…

Q: A horizontal curve has its middle ordinate, M, 150.00 m and its external distance, E, 300.00 m. That…

A: The given data is as follows: Middle ordinate, M=150.00 mExternal distance, E=300.00 mNumber of…

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: 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: Determine variables requested below for a horizontal curve with the following characteristics.…

A: The given data is shown below: Curve length=1255'Radius=1200'PC ta=12+00Lane width=14…

Q: a. The velocity of the car as it approaches the transition curve; b. The length of the transition…

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

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Q: Q12:- A horizontal circular curve with radius of 265 m and deflection angle = 72 degrees is planned…

A: Radius of curve=R=265 mDeflection angle=number of lanes=n=4Design speed=V=80 Km/hr=22.22 m/secCrown…

Q: Qg:- A horizontal curve with a radius of 200 m forms part of a two-lane highway with a posted speed…

A: The radius of the curve = 200 mThe posted speed = 50 kphThe perception reaction time = 2.5 secThe…

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.