Suppose that during the construction of the symmetrical curve in problem #1, it w discovered that left side of the grade intersection falls on a rocky terain. To avo additional cost of excavation, the symmetrical curve is to be adjusted by adding a 0.4174m high on the curve at its lowest point. If the location of the PT and the grades the tangents remain the same, de termine the ff:
Suppose that during the construction of the symmetrical curve in problem #1, it w discovered that left side of the grade intersection falls on a rocky terain. To avo additional cost of excavation, the symmetrical curve is to be adjusted by adding a 0.4174m high on the curve at its lowest point. If the location of the PT and the grades the tangents remain the same, de termine the ff:
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Question
Answer only #2 letter b
Transcribed Image Text:1. Given are the stations and elevations of a proposed symmetrical parabolic highway curve.
POINT
ELEVATION (m)
STATION
A
6+075
6+255 (PI)
93.60
90.00
96.48
C
6+435
Note: Lines AB and BC are the tangent lines of the proposed highway curve.
The curve will clear a boulder at Sta. 6+276, and the elevation of the tip of the boulder is
92.65m. Solve for the ff:
a. length of the symmetrical curve
b. stationing and elevation of PC
2. Suppose that during the construction of the symmetrical curve in problem #1, it was
dscovered that left side of the grade intersection falls on a rocky terrain. To avoid
additional cost of excavation, the symmetrical curve is to be adjusted by adding a fill
0.4174m high on the curve at its lowest point. If the location of the PT and the grades of
the tangents remain the same, detemine the ff:
a. Length of the new vertical parabolic curve
b. Stationing and elevation of the new PC
C. Stationing and elevation of lowest point of the new curve
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