Elementary Surveying: An Introduction To Geomatics (15th Edition)
15th Edition
ISBN: 9780134604657
Author: Charles D. Ghilani
Publisher: PEARSON
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Textbook Question
Chapter 25, Problem 25.3P
What factors must be taken into account when designing a grade line on any highway or railroad?
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Read the question carefully and give me right solution according to the question.
A −1.10% grade meets a +0.60% grade at station 36 + 00 and elevation 800.00 ft. The +0.60% grade then joins a +2.40% grade at station 39 + 00. What is the station of the midpoint?
Two grades +2 % & +2 %, what is required to connect themSingle choice.
choose one of the following
none of the given
circular curve
crest vertical curve
sag vertical curve
Copy the questions and answer. Provide necessary drawings / illustrations base on the
problems.
Problem 1:
A -3% grade meets a +5% grade near an underpass. In order to maintain the
minimum clearance allowed under the bridge and at the same time introduce a vertical
transition curve in the grade line, it is necessary to use a curve that lies 200m on one
side of the vertex of the straight grade and 100m on the other. The station of the
beginning of the curve (200m side) is 10+ 000 and its elevation is 228m.
a.) Determine the elevation at station 10 +
040.
b.) If the uphill edge of the underside of the
bridge is at station 10+ 220 and at
elevation 229.60m, what is the vertical
clearance under the bridge at this point?
c.) Determine the stationing of the lowest
point of the curve.
P..C.
10+000
Fl. 228 m
40
-200
81=-38
10+040
H
-100
20+5%
8=(500+£0 3001 -
Chapter 25 Solutions
Elementary Surveying: An Introduction To Geomatics (15th Edition)
Ch. 25 - Prob. 25.1PCh. 25 - Prob. 25.2PCh. 25 - What factors must be taken into account when...Ch. 25 - Prob. 25.4PCh. 25 - Prob. 25.5PCh. 25 - Prob. 25.6PCh. 25 - Prob. 25.7PCh. 25 - Prob. 25.8PCh. 25 - Prob. 25.9PCh. 25 - Prob. 25.10P
Ch. 25 - Prob. 25.11PCh. 25 - Prob. 25.12PCh. 25 - Prob. 25.13PCh. 25 - Prob. 25.14PCh. 25 - Prob. 25.15PCh. 25 - Prob. 25.16PCh. 25 - Prob. 25.17PCh. 25 - Prob. 25.18PCh. 25 - Prob. 25.19PCh. 25 - Prob. 25.20PCh. 25 - Prob. 25.21PCh. 25 - Prob. 25.22PCh. 25 - Prob. 25.23PCh. 25 - Prob. 25.24PCh. 25 - Prob. 25.25PCh. 25 - Prob. 25.26PCh. 25 - Prob. 25.27PCh. 25 - Prob. 25.28PCh. 25 - Prob. 25.29PCh. 25 - Prob. 25.30PCh. 25 - Prob. 25.31PCh. 25 - Prob. 25.32PCh. 25 - Prob. 25.33P
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.Similar questions
- A-1.10% grade meets a +0.60% grade at station 36+00 and elevation 800.00 ft. The +0.60 grade then joins a +2.40 grade at station 39+00. Part A Determine the elevation at the low point of the curve. Express your answer in feet to six significant figures. Elev = Submit Part B VAΣo↓ vec Request Answer Determine the station at the low point of the curve. Submit O 38+42.763 O 35+40.763 O 36+42.763 O 36+44.763 Request Answer ? ftarrow_forwardThe following table shows the stations and ordinates for a mass diagram. The free-haul distance is 600 ft. Overhaul cost is $12 per station yard. (a) Use the method of moments to compute the additional cost that must be paid to the contractor. (b) Sketch the ground profile if the finished grade of this roadway section is level (0 percent).arrow_forwardGiven a crest vertical curve of length 523, with a PVC at elevation 1,016, connecting a grade 1% to a grade -0.5%, what is the elevation of the PVI?arrow_forward
- INSTRUCTION: COMPLETE SOLUTION WITH FIGURES. BOX YOUR FINAL ANSWER. An underpass crossing a reinforced concrete bridge along the Shaw Blvd has a symmetrical vertical curve, having a downward grade of -4% meeting an upward grade of +7.5% at the vertex V at elevation 70 m and stationing of 7+700, exactly underneath the center line of the bridge having a width of 10 m. If the required minimum clearance under the bridge is 5 m, and the elevation of the bottom of the bridge is 78.10 m. a) Determine the length of the vertical parabolic curve that shall connect the two tangents. b) Determine the stationing of the point a catch basin (lowest point) will be placed. c) Determine the elevation of the point where a catch basin (lowest point) will be placed.arrow_forwardA grade of 0.4 percent is being considered for a mountain roadway. The elevation at the initial point is 2054.23 feet and a horizontal distance of 5758.79 needs to be covered. What is the elevation at the end of the grade?arrow_forwardQuestion 7, The elevation at Station 4+13.88 is 351.07 feet. The grade at station 6+27.08 is 355.89 ft. What is the grade in percent? Answer 7:arrow_forward
- A surveyor must stake a symmetrical vertical curve where an entering grade of+0.80% meets an exiting grade of -0.40% at station 90+00.00, which has an elevation of 100.00 ft. The maximum allowable change in grade per 100.00 ft station is -0.2%. What is the length, in station, of the vertical curve a) described? What is the elevation of 92+00.00 on the vertical b) curve? с) What is the highest point on the curve previously described? Surveying Solved Problems for the FS and PS Exams 4th Edition by Jan Van Sickle.arrow_forwardDifferentiate between backwater curve and drawdown curve.arrow_forwardWhen the bridge is located first, in most cases the resulting highway alignment is the best true or false?arrow_forward
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