An engineer has been decided to connect a tunnel with floor elevation (100.00m) and station (0.00) with bridge elevation (112.50 m) and station (0+450). He suggested vertical curves with equal tangents. Sketch the Figure. Is the crest vertical curve safe to provide sight distance for design speed (70 km/hr.)? Use t=2.5 sec.

Q: 3. For curve y + 4x2 - 12x , locate the possible maximum and minimum %D points.

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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: In a vertical parabolic curve (gl= +1.1%, g2=-1.7%), length 280 m, fill all below blanks: Rate of…

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

Q: 1- Find the steepest gradient on a 3-degree curve for a BG line with ruling gradient of 1 in 200. a.…

A: Degree of curve = 3° For BG line ruling gradient of 1 in 200 Steepest gradient = ?

Q: Two straights, AR having gradient falling to the right at 9V:6H and RT having gradient rising to the…

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Q: PI Elev 108.00m 1.50m +6% -3% 8.00m Sta 1+060 PT PC Sta 1+000 Elev 100.00m Answer the following:…

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

Q: SITUATION 4. The length of curve of a simple having a degree of curve 4° is equal to 210m. Compute…

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Q: The minimum length of vertical curve shall be -for a grades of 4% and 3% respectively in feet -- O…

A: Given data- Grades (n1) = 4% (n2) = 3% To Find- Minimum length of vertical curve (L)

Q: (ii) Determine the transition length based on permissible speed for a 2º curve with maximum…

A: Given values, Maximum permissible speed Vmax = 100 km/h Degree of curve D = 2o G= 1.676 m Radius of…

Q: An 80m spiral easement curve connects a 40 simple curve. Determine the maximum speed on the spiral…

A: To determine the maximum speed on the spiral curve

Q: 2. There is a Vertical Curve with a length of 300 feet, a gl of -3.2%, a g2 of 1.8%, a PVI at…

A: The grade of back tangent, g1=-3.2%The grade of forward tangent, g2=+1.8%The elevation of PVI…

Q: Vertical summit curve has tangent grades of +1.5% and - 1.5% intersecting at station 4+000 at an…

A: Given- n1=+1.5%n2=-1.5%L=182

Q: If vertical curve #2 has an L=800 feet, what is the elevation of station 27+00? VC 1, PVI=21+72.41,…

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Q: The reduced level at the intersection of a rising gradient of 2% and a falling gradient of -3% on a…

A: (a) g1=2%g2=-3%K=55PI Chainage=4330mPI Elevation=89.05mLength of curve=K(g1-g2)…

Q: An engineer has been decided to connect a tunnel with floor elevation (100.00m) and station (0.00)…

A: Design speed (v) = 70 kmph = 19.44 m/secTime (t) = 2.5 secFloor elevation = 100.00 mFloor station =…

Q: An engineer has been decided to connect a tunnel with floor elevation (100.00m) and station (0.00)…

A: Given Data: The floor elevation is 100.00 m The bridge elevation is 112.50 m The station is at 450 m…

Q: A 750-foot sag vertical curve joins a -2.3% grade with a 1.5% grade. The station of the PVC is 5+50…

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Q: Given the length of vertical curve is 800 meters, the station of PVT is 225+16.0m and the elevation…

A: a) Elevation of station 200 + 9.5 : Elevation of station 200+9.5 = 209.5-ne1 n is number of cards on…

Q: The grade from point A to vertex V is -6% and from V to point B is +3%. It is desired to connect…

A: The given data is for Vertical symmetry parabolic curve. So, Use equation of parabolic curve. y =…

Q: Identify the type of vertical curve (sag or crest) by the following rates of change in grade. -0.5%…

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Q: A vertical parabolic curve of length 180m has the following specifications. The point of interaction…

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Q: A -3% grade meets a +5% grade at a vertex (El. 146.24m) directly under an overpass bridge having…

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Q: a 5

A: Using equation of the throw :P=Ls224RLs=length of the spiral =14.6mR=1719D

Q: The central curve of the spiral easement curve has a 5 degree curve with an angle of intersection of…

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Q: The angle between a 5-m full station of a certain curve is 10°. The curve has 7 intermediate…

A: Some points to be considered 1) Point of curvature 2) Point of tangency 3) Length of the Curve   The…

Q: A-3.3% grade meets a +6.6% grade at a vertex (El, 144.37m) directly under an overpass bridge having…

A: G1 = -3.3% G2 = 6.6%

Q: A rising gradient AB and a falling gradient BC are to be connected by a vertical curve. Based on the…

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Q: 15. Determine the difference in the length of curve if this will be applied to railway. a) 1.45m b)…

A: The given data is shown below: Back tangent Azimuth=246°20'Forward tangent Azimuth=330°20'Degree of…

Q: A vertical parabolic happy curve underpass has a grade of -4% followed by a grade of 2% intersecting…

A: Given: The grade g1 is -4%. The grade g2 is 2 %. The station is 12+150.60. The elevation of Sta.…

Q: 2. Vertical highway curve: Given PVI at 19+00, L = 500 ft, g1 = +2.5%, g2=-1.0%, and PVI elevation…

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Q: as PVC at Sta 19+274 and at elevation 136m. The initial grade is 6.14% and the final grade is…

A: Given data PVC at Sta 19+274 elevation 136m  initial grade is 6.14% final grade is -5.58%

Q: 26.10 A grade of +1.5% intersects a grade of -2.5% at station of 1 + 080 of elevation 68.94 m. if…

A: Given Data:g1=1.5%g2=-2.5%station=1+080Elevation=68.94m

Q: Question 1 b Find the length of valley curve provided on the basis of comfort condition (given…

A: Given- Gradient N=0.04, Speed V=70 kmph, It is needed to find the length of the valley curve on the…

Q: An existing tunnel needs to be connected to a newly constructed bridge with sag and crest vertical…

A: Design speed =35 mile/hrFrom the given profile viewLs+Lc=12000 Assume Gcon as grade of constant…

Q: (a) Station and elevation of PC & PT (b) Station of the lowest point of the curve (c) Elevation of…

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