A portion of a proposed highway extension project in the form of a compound circular curve is to be laid out in such a way that it will be tangent to three reference lines AB, BC and CD. The length of the circular curve which starts at the PC is twice the length of the curve passing through the PT. Stationing of B is 9 + 980. Given the following data : POINT NORTHING EASTING A 130.35 40.50 В 175.78 260.86 C 106.14 437.64 12.53 472.82 a. Determine the value of I for the compound curve. b. Calculate for the radius of the simple curve that starts at the PC. c. Calculate for the radius of the simple curve that ends at the PT. d. What will be the stationing of the PT of the compound curve?
A portion of a proposed highway extension project in the form of a compound circular curve is to be laid out in such a way that it will be tangent to three reference lines AB, BC and CD. The length of the circular curve which starts at the PC is twice the length of the curve passing through the PT. Stationing of B is 9 + 980. Given the following data : POINT NORTHING EASTING A 130.35 40.50 В 175.78 260.86 C 106.14 437.64 12.53 472.82 a. Determine the value of I for the compound curve. b. Calculate for the radius of the simple curve that starts at the PC. c. Calculate for the radius of the simple curve that ends at the PT. d. What will be the stationing of the PT of the compound curve?
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:A portion of a proposed highway extension project in the form of a compound circular curve is
to be laid out in such a way that it will be tangent to three reference lines AB, BC and CD. The
length of the circular curve which starts at the PC is twice the length of the curve passing through
the PT. Stationing of B is 9 + 980. Given the following data :
POINT
NORTHING
EASTING
A
130.35
40.50
В
175.78
260.86
C
106.14
437.64
12.53
472.82
a. Determine the value of I for the compound curve.
b. Calculate for the radius of the simple curve that starts at the PC.
c. Calculate for the radius of the simple curve that ends at the PT.
d. What will be the stationing of the PT of the compound curve?
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