a)A 1600-ft-long sag vertical curve (equal tangent) has a PVC at station 120+00 and elevation at 1500 ft. The initial grade is -3.5% and the final grade is +6.5%. Determine the elevation and stationing of the low point, PVI, and PVT. b) 1200-ft equal tangent crest vertical curve is currently designed for 50mph. A civil engineering student contends that 60mph is safe in a van because of the higher driver’s eye height in the van. If all the design inputs are standard, what must be the height of driver’s eye (in the van) for the student’s claim to be valid?
a)A 1600-ft-long sag vertical curve (equal tangent) has a PVC at station 120+00 and elevation at 1500 ft. The initial grade is -3.5% and the final grade is +6.5%. Determine the elevation and stationing of the low point, PVI, and PVT. b) 1200-ft equal tangent crest vertical curve is currently designed for 50mph. A civil engineering student contends that 60mph is safe in a van because of the higher driver’s eye height in the van. If all the design inputs are standard, what must be the height of driver’s eye (in the van) for the student’s claim to be valid?
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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a)A 1600-ft-long sag vertical curve (equal tangent) has a PVC at station 120+00 and
elevation at 1500 ft. The initial grade is -3.5% and the final grade is +6.5%. Determine
the elevation and stationing of the low point, PVI, and PVT.
b) 1200-ft equal tangent crest vertical curve is currently designed for 50mph. A civil
engineering student contends that 60mph is safe in a van because of the higher driver’s
eye height in the van. If all the design inputs are standard, what must be the height of
driver’s eye (in the van) for the student’s claim to be valid?
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