In a certain portion of ongoing construction of ClarkSubic road, a parabolic curve is designed to connect a +6.0% grade and a -4.1% grade. The curve is to pass through point “P” the stationing of which was 35+280 and the elevation is 198.10m. If the grade intersection is at station 35+300 and the elevation is 201 m, determine the following: A. Length of the curve. B. Location of the summit from PT. C. Elevation of summit.

Q: An incoming grade of +1.800% meets an exiting grade of -2.500% at a PVI having station = 27+32.20…

A: Incoming grade = +1.800% Exiting grade = -2.500% PVI station = 27+32.20 PVI elevation = 231.87…

Q: An equal tangent vertical curve is to be constructed between grades of -2.0% (initial) and 1.0%…

A: Solution:GradeG1=-2.0%Grade G2=1.0%Point of vertical intraction elevation=420 mPoint of vertical…

Q: A parabolic vertical curve with a grade in of 2.1%, a grade out of - 3.2%, a curve length of…

A: (Note: Since part C is asked to solve, the solution for the c part is given below.) Given: Grade in,…

Q: 19. What is the stationing (ft) of the EVC?

A: Length of curve, L = 1100ft  ⇒ 11 stations.   Stationing of BVC = 12+15 ft.

Q: A 500-m long equal tangent vertical curve has a point of vertical curvature at station 2 + 600 and…

A:

Q: An equal-tangent crest curve connects a +2.0% and a-1.0% grade. The PVC is at station + 670 and the…

A: The curve length will be: Lm=2×100station2 of PVI-station1 of PVCLm=200(1+790-1+670)      =240 ft

Q: have designed a vertical crest curve which joins a +3% E mph and you have determined the curve to be…

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Q: Sketch the graph of a symmetrical parabolic curve if it has descending grade of 4% and an ascending…

A: Answer Calculation of station of PC Since we are given symmetrical parabolic curve and symmetrical…

Q: Q2) A proposed highway has two tangents of bearings N 45°54'36" E and N 1°22'30" W. The highway…

A: “Since you have posted a question with multiple sub-parts, we will solve the first three sub-parts…

Q: Question # 5 An existing crest vertical curve which connects +3% and -1% grades is designed for 55…

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Q: NEED ASAP A summit curve has tangents intersects at Pl at station 14+750 with elevation of 76.30m.…

A: PVCSTATION=PVISTA-L2PVCsta=14750-3002=14+600PVCELV=PVIELV-g1L2PVCelv=76.3-0.034×3002PVCelv=71.2

Q: A vertical curve is to be design to joint (+3) percent grade with a (-3.5) percent grade, sight…

A: It is required to determine the minimum length of the curve. Assume S < L L=AS21002h1+2h22 Here A…

Q: On a vertical alignment a +10 % grade (back tangent) meets a -4% grade (forward tangent) at station…

A: Initial grade, G1 = 10%Final grade, G2 = -4%Length of the curve, L = 1000 ftElevation of PVC, e =…

Q: A +0.7% grade meets a -0.4% grade at sta 2+700 and at elevation 30 m. The max allowable change in…

A: Given information, n1 = 0.7%n2 = -0. 4%Maximum allowable change in grade/sta.=0.2%

Q: The elevation of PT is at elevation 454.50m while the lowest point on the curve is located 40m from…

A:

Q: Question 3 An equal-tangent vertical curve is to be constructed between grades of -2 percent and +1…

A: Given :

Q: If + 0.8% grade meets - 0.7% grade and the rate of change of grade for 30 m distance is 0.05, the…

A: g2 = -0.7% g1 = 0.8%  Rate of change of grade r= 0.05/30 = 0.00167

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: 500-m long equal tangent vertical curve has a point of vertical curvature at station 2 + 600 and…

A:

Q: 600-ft crest vertical curve is to be developed from a +1.80% grade intersecting with a -3.4% grade…

A: Given Initial grade = 1.8% Final grade = -3.4% Station PVI= 15+50= 1550ft Elevation of PVI= 315.76ft…

Q: A horizontal curve on Texas Highway 83 (Tx83) comprises of a two-lane rural highway with a lane…

A: Stopping Sight Distance: It is the minimum sight distance available at any spot having sufficient…

Q: Determine the values and stationing (sta. PT) for a compound curve to be placed on an exist loop of…

A:

Q: A 4.5% grade intersects a -1% grade at STA 5+180 at an elevation of 195m. A vertical curve of length…

A: Given: The length of vertical curve is 120 m. Here: PVC Station=PVI Station- Length of vertical…

Q: An equal-tangent vertical curve connects a +1.5% initial grade and a -3% final grade. The PVT is at…

A: Following are the given information.Initial grade, Final grade, Station of PVT Elevation of PVT…

Q: Prob. 3. A forward tangent of +6% was designed to intersect a back tangent of -3% at a proposed…

A: You can determine tangent length by calculating the central angle of the curve, in degrees. An angle…

Q: 103+51.05 103+53.01 103+47.56 103+49.89

A: 103 + 51.05

Q: A crest vertical curve (equal tangent) has PVI at station 210+00 and elevation 420.75 ft. The…

A: SPVI = Stationing of PVI = 210+00EPVI = Elevation of PVI = 420.75 ftg1 = Initial grade = 2.5% =…

Q: Problem A highway engineer must stake a symmetrical vertical curve where an entering grade of +0.80%…

A: Given : n1 = +0.80 % n2 = -0.40 % Station - 10 + 100 having an elevation = 140.36 m Allowable grade…

Q: You are designing a vertical sag curve joining a -3% grade to a +2% grade. The design speed is 60…

A: Given: g1=-3%g2=+2% Design speedV=60 mph.

Q: Q 1: Determine the minimum length of a highway sag curve (based on SSD Criterion) that is designed…

A: Given data Gradients Acceleration  Time Speed.

Q: 7. A -3% grade meets a +5% grade near an underpass. In order to maintain the minimum clearance…

A: jkjethgnfjhjjj

Q: A symmetrical parabolic curve connects two grades of +6% and -4%. It is to pass through a point "A",…

A: Grades of parabolic curve are = +6% and -4% Elevation = 198.13 m Elevation at grade intersection=…

Q: A -6% grade and a +2% grade intersect at STA 12 + 200 whose elevation is at 25.632 m. The two grades…

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Q: A horizontal curve on Texas Highway 83 (Tx83) comprises of a two-lane rural highway with a lane…

A: Stopping Sight Distance : It is the minimum sight distance available at any spot having sufficient…

Q: A crest vertical curve joining a + 3 percent and – 4 percent grade is to be designed for 75 mph. If…

A:

Q: An equal-tangent curve connects a +1.0% and a -0.5% grade. The PVC is at station 54+24 and the PVI…

A:

Q: A -6% grade and a +2% grade intersect at STA 12 + 200 whose elevation is at 25.632 m. The two grades…

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Q: grade of -3.0% is followed by a grade of +2.1% which intersects at station 10+250 and elevation of…

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Q: Q6. To help improve the safety of at-grade intersection of two roads, the intersection is being…

A: Given Data, G1=+4% (Upgrade)G2= -3% (Downgrade)L1= 138 mStation PVC1=14+47, Elevation PVC1=477m…

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.