An equal-tangent sag vertical curve on a section of a highway connects an initial grade of -2% and a final grade of +3.5% at station 25+00 and elevation 237 ft. The curve crosses an overpass at station 23+00. The base of the overpass structure is at elevation 259.4 ft and is 14 ft above the pavement surface of the highway. L Overpass Sta 23+00 El 259.4' EVC BVC 14' G1 =-2% G2 =-3.5% PVI Sta 25+00 El. 237' a) Determine the length of the vertical curve. b) Determine the design speed used to design the vertical curve. The length of the vertical curve longer than the stopping sight distance.

An equal-tangent sag vertical curve on a section of a highway connects an initial grade of -2% and a final grade of +3.5% at station 25+00 and elevation 237 ft. The curve crosses an overpass at station 23+00. The base of the overpass structure is at elevation 259.4 ft and is 14 ft above the pavement surface of the highway. L Overpass Sta 23+00 El 259.4' EVC BVC 14' G1 =-2% G2 =-3.5% PVI Sta 25+00 El. 237' a) Determine the length of the vertical curve. b) Determine the design speed used to design the vertical curve. The length of the vertical curve longer than the stopping sight distance.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Question

An equal-tangent sag vertical curve on a section of a highway connects an initial grade of -2% and a final grade of +3.5% at station 25+00 and
elevation 237 ft. The curve crosses an overpass at station 23+00. The base of the overpass structure is at elevation 259.4 ft and is
14 ft above the pavement surface of the highway.
L
Overpass
Sta 23+00
El 259.4'
EVC
BVC
14'
G1 =-2%
G2 =-3.5%
PVI
Sta 25+00
El. 237'
a) Determine the length of the vertical curve.
b) Determine the design speed used to design the vertical curve. The length of the vertical curve longer than the stopping sight distance.

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