CONNECT A FORWARD TANGENT OF 3% AND A BACK TANGENT OF-15% BY A 300 M SYMMETRICAL PARABOLIC CURVE. IT WAS DISCOVERED THAT THE GRADE INTERSECTION AT STA 10+100 with ELEVATION 50 M FALLS ON ROCKY SECTION WITH THE EXPOSED BOULDER AT ELEVATION 102.67. TO AVOID ROCK EXCAVATION, IT WAS DECIDED TO ADJUST THE VERTICAL PARABOLIC CURVE THAT THE CURVE WILL JUST CLEAR THE ROCK WITHOUT ALTERING THE POSITION OF PC AND THE GRADE OF EACH TANGENTS. DETERMINE THE ELEVATION AND STA OF THE NEW PT.

Q: A vertical summit curve has tangent grades of +2.8% and -1.6%. The curve will be designed such that…

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Q: A vertical parabolic sag curve has tangent grades of -1.428% and +0.707%. If the grade changes…

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Q: Vertical Curve: If L=1320 ft, the BVC is at 5+00, What is the Station and Elevation for PVI ? G1 is…

A:

Q: In a certain road construction undertaken by the Bureau of Public Highway it was decided to connect…

A:

Q: A symmetrical parabolic curve passes through point A whose elevation is 23.23m at a distance meters…

A: Using equation y=g2-g12Lx2+g1x+PVCelvg1=back tangentg2=Forward tangentL=length

Q: to 0.5%. gth of curve.

A: Length :L=Ar=(1.5+3)0.5×100=900m

Q: A +3 % grade @ PC intersects with a -4.2 % grade at PI forming a symmetrical vertical curve with…

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Q: An asymmetrical vertical parabolic curve has a forward descending grade of 4% and backward ascending…

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Q: Problem 1 A - 4% grade meets a +5.5% grade at a vertex whose elevation equals to 132.56 m directly…

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Q: 3. A grade of +5% grade intersects a grade of -3.0% P.C. has a of 10 + 110.00 which has an elevation…

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Q: There is a horizontal curve of radius 50 m on a stretch of hill road with a gradient of 5.0%.…

A: Given: Radius of horizontal curve= 50m, Ruling Gradient = 5% Calculate Grade compensation = ?

Q: A vertical parabolic sag curve of Laon Laan underpass has a grade of -4% followed by a grade of +2%…

A: We know that ; r = g2 - g1L L = g2 - g1r where ; g2 = 2 % = 0.02 g1 = - 4 % = - 0.04 r = 0.6 % =…

Q: Vertical Curve: If L=1320 ft, the BVC is at 5+00, What is the Station and Elevation for PVI ? G1 is…

A: Vertical Curve: A vertical curve is a transition element in the geometric design of a highway. A…

Q: Design of Vertical curve Given data: L=911.52 ft G1=-4% and G2=+3.8% PVI station=52+00 and PVI…

A: PVCSTATION=PVISTA-L2PVCSTATION=5200-911.522=47+44.24PVCELV=PVIELV-g1L2PVCelv=1261.5+0.04×911.522=PVC…

Q: A symmetrical parabolic curve passes through point A whose elevation is 23 23m at a distance of 54…

A: Correction in question:- As the elevation of PC is given as 22.56 m Hence, elevation of point A can…

Q: A symmetrical vertical summit curve has tangents of +4.5% and -2.5%. The allowable rate of change of…

A: Question is based on the vertical summit curve . Tangents of curve,allowable rate of change of…

Q: A vertical summit curve was designed to connect two intersecting tangents. Elevation PVC = 250.55m,…

A: slope of upward tangent = Elevation of PVI - Elevation of PVCL2…

Q: 94444% 00962% 11702% 25000% 41892% ne of the Choices

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Q: 1. IN A CERTAIN ROAD CONSTRUCTION IS UNDERTAKEN DPWH, IT WAS DECIDED TO CONNECT A FORWARD TANGENT OF…

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Q: SITUATION 8: A parabolic sag curve has tangent grades of -2% and +3%. The stationing of PT is at…

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Q: A parabolic vertical curve is to be set out connecting two uniform grades of +1.8 and +3.9%. The…

A: Length=Ar=3.9-1.80.0520m=840mPVCsta=PVIsta-L2PVCsta=2705-8402=2285PVCELV=PVIELV-g1L2PVCelv=238.755-0…

Q: SURVEYING 103 C2 Problem set: as An unsymmetrical parabolic curve has a forward tangent of-8% and…

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Q: It is required to construct a vertical curve with 400m from the PC at STA 3+16, elev.214m to the…

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Q: Given two grades intersecting at station 1 + 250m, one grade at +6%, the other at -3%. Use a…

A: Given data, Two grade intersecting at station 1+250m g1=+6% and g2=-3% L=183m L1=121.95m and…

Q: curve has a length of 141m with tangent grades of -1.5% and 2.5% intersecting at station 12+640.22…

A: PVCSTATION=PVISTA-L2PVCsta=12640.22-1412=12+569.72PVCELV=PVIELV-g1L2PVCelv=240-0.025×1412PVCelv=238.…

Q: evel and the through chainage of the intersection point of the two gradients are 93.60m and 66…

A: PVCSTATION=PVISTA-L2PVCsta=6671.34-2002=6571.34PVCELV=PVIELV-g1L2PVCelv=93.6-0.01×2002PVCelv=92.6

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 passes thru point A whose elevation is 23.23 m at a distance of 54 meters…

A: Find grade of forward tangent

Q: A grade descending at the rate of -4% intersects another grade ascending at the rate of +8% at…

A: We have to determine the value of necessary length of the curve as per the given data in the…

Q: The vertical distance from the vertex to parabolic curve is 3 m. The first grade is ascending at the…

A: Length of Parabolic curve can be calculated by ; y = NL8 where ; y = Distance from vertex to…

Q: A parabolic curve JS 380 m long connects two tangent grades of +6.2% and -2.8%. If the elevation of…

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Q: 10. A +2.8% grade at 1 + 200 is to be connected to a -4.2% grade at 1+600 using a symmetrical…

A:

Q: a 5

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

Q: elevation is 23.23 m at a distance of 54 meters from the point of curvature. The elevation of the…

A: Given:- elevation=23.23m d=54m elevation at point of curvature=22.56m Station 4+100m grade of back…

Q: A 1200 feet parabolic vertical curve has an entering grade of –2.6% and a departing grade of +3.4%.…

A: PVC Station…

Q: vertical parabolic happy curve located in Malabon underpass has a grade of -4% followed by a grade…

A: The curve generally occurs between two lengths of a straight roadway that makes the different…

Q: The slope of the back tangent of a parabolic curve is +4.2%, while the slope of the forward tangent…

A: The slope of the back tangent of a parabolic curve is +4.2%, while the slope of the forward tangent…

Q: Problem 2 A symmetrical vertical summit curve has tangents of +5% and -3%. The allowable rate of…

A:

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%

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