A negative 5% grade meets a positive 3% grade at vertex elevation 146.24m directly under an...

A negative 5% grade meets a positive 3% grade at vertex elevation 146.24m directly under an overpass bridge whose underside is at elevation 152.74 and carries another road across the grades at right angles.What is the longest parabolic curve that can be used to connect the two grades and at the same time provide at least 5 meter clearance under the bridge at its center line? If the underside of the bridge is level and is 12 meter wide, Find the actual clearance at the left and right of the bridge. Draw the diagram.

Expert Solution

Ally Wells answered 8 months ago

A 0% grade meets a 3% grade at station 24+00.00 and an elevation of 372.15 ft....

A 0% grade meets a 3% grade at station 24+00.00 and an elevation of 372.15 ft. For a passing sight distance of 2,000 ft, find the following: a. Minimum length of the vertical curve that allows for passing using the minimum curve length equations. b. Calculate the elevation of the middle point of the curve. c. Calculate the elevation of the road at station 23+00.00.

A grade g1=+2.00% intersects grade g2=−1.40% at a vertex whose station and elevation are 78+60 and...

A grade g1=+2.00% intersects grade g2=−1.40% at a vertex whose station and elevation are 78+60 and 7855.35 ft, respectively. An equal-tangent parabolic curve 505 ft long has been selected to join the two tangents. Compute station elevations for the curve, for stakeout at full stations.

Curve 2: A +7.00% grade meets a -6.00% grade at station 4+80 and elevation 705.70 ft,...

Curve 2: A +7.00% grade meets a -6.00% grade at station 4+80 and elevation 705.70 ft, 80-ft curve, staked 10ft apart. Get a rough estimate in cubic yards of how much soil that must be brought in (fill) and/or removed (cut) to create a 14-foot wide roadway that starts at your PVC/BVC, ends at your PVT/EVC, and follows your curve elevations. Make sure to state which curve your group was assigned in the calculations. Trapezoidal Area Estimation is key. ground...

A −2.60% grade meets a +1.95% grade at station 44+25 and elevation 3386.96 ft, 315-ft curve,...

A −2.60% grade meets a +1.95% grade at station 44+25 and elevation 3386.96 ft, 315-ft curve, stakeout at half stations. Part A Tabulate station elevations for an equal-tangent parabolic curve for the data given above. Express your answers, separated by commas, to six significant figures from lowest to highest elevation. ftft, ftft, ftft, ftft, ftft, ftft, ftft, ftft, ftft, ftft SubmitRequest Answer Provide Feedback

A −2.60% grade meets a +1.70% grade at station 44+25 and elevation 3386.96 ftft, 305-ftft curve,...

A −2.60% grade meets a +1.70% grade at station 44+25 and elevation 3386.96 ftft, 305-ftft curve, stakeout at half stations. Tabulate station elevations for an equal-tangent parabolic curve for the data given above. Express your answers, separated by commas, to six significant figures from lowest to highest elevation.

A 3.0% grade passing at station 19+85.00 at an elevation of 99.10 m meets a -2.0%...

A 3.0% grade passing at station 19+85.00 at an elevation of 99.10 m meets a -2.0% grade passing at station 20+35.00 at an elevation of 99.60 m. Please note that these two elevations and stations DO NOT correspond to BVC and EVC. Determine the station and elevation of the point of intersection of the two grades./ If the highest point on the curve must lie at station 20+40.00, find the elevation of this point and the length of the curve...

A −2.60%−2.60% grade meets a +1.60%+1.60% grade at station 44+25 and elevation 3386.96 ftft, 305-ftft curve,...

A −2.60%−2.60% grade meets a +1.60%+1.60% grade at station 44+25 and elevation 3386.96 ftft, 305-ftft curve, stakeout at half stations.answer should be 10 elevations

A -3.4% grade intersects a 4.2% grade at STA 5+180 at an elevation of 125.98. A...

A -3.4% grade intersects a 4.2% grade at STA 5+180 at an elevation of 125.98. A vertical curve of length 120m is to be run forward from the point of intersection, and a curve of length 80m is to be extended back forming an unsymmetrical curve. a.)Determine the elevation of the lowest point. b.)Determine the elevation of the second quarter point on the curve.

A descending grade of 4.2% intersects an ascending grade of 3% at sta. 12+325 at elevation...

A descending grade of 4.2% intersects an ascending grade of 3% at sta. 12+325 at elevation 14.2 m. These two grades are to be connected by a 260 m vertical parabolic curve. A reinforced concrete culvert pipe is to be constructed with its top 30 cm below the subgrade (or the lowest point of the curve) What will be the invert elevation of the culvert?

Discuss two cases of either a negative or positive externality that affects you directly. What are...

Discuss two cases of either a negative or positive externality that affects you directly. What are the economic outcomes associated with each externality (in terms of surplus/over production etc.)? What are some ways that you could intervene to correct these externalities? If your solution requires the government to be involved, discuss why. If not, also describe why! (please make a reference to Coase's theorem that could be relevant.)

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