A 7.0m wide (3.5m lanes) two-way two-lane (TWTL) rural road curves around an obstruction (vegetation). Determine the minimum offset, from the centre of the inside lane to the obstruction, to satisfy the stopping sight distance requirements if the design speed is 90km/hr and the curve radius is 425m. Note: Assume that the sight distance is less than the length of the circular curve. Any other assumptions should be clearly stated.

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A: Given Data :  Radius of curve (R)= 200m Lane width (w) = 3.3m SSD = 120m

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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…

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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%)…

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A: Solution is as given

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Q: Question-7 A horizontal circular curve with a centre line radius of 200 m is provided on a 2-lane,…

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Q: Q-5 The mechanical widening of a curve is 1.5m, the curve is having a radius of 120m and design…

A: given- mechanical widening=1.5 mradius of curve=120 mdesign speed=80 kmph

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 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…

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Q: An existing sag vertical curve on highway joins a +2.5% grade with a -5.1% grade. If the posted…

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Q: highway has two lanes in each direction. The lane width is sight is located at 140 ft from the edge…

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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…

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Q: and -2%. If the height of the dirver's eye from the pavement is 1.08 m and the height of the object

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

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Q: Questions 5. a) A vertical crest curve has an approach grade +3% and a departure grade -2%. The…

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Q: The length of the curve is 180m. with grade tangent of -1.5% and +2% respectively. The road was…

A: We have fromulaL=AS2200h1+Stanββ=0.85°A=2+1.5=3.5L=180S=240h1=?

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Q: A vehicle encounters a sag parabolic curve. The stationing at the vehicle is 12+400 meters and the…

A: To find out the change in grade A in percentage.

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.