1. IN A CERTAIN ROAD CONSTRUCTION IS UNDERTAKEN DPWH, IT VWAS DECIDED TO CONNECT A FORWARD TANGENT OF 3% AND A BACK TANGENT OF -15% BY A 300 M SYMMETRICAL PARABOLIC GURVE. IT WAS DISCOVERED THAT THE GRADE INTERSECTION AT STA 10+100 WHOSE ELEVATION IS 150 M FALLS ON ROCKY SECTION. WITH THE EXPOSED BOULDER AT ELEVATION 1102.67 TO AVOID ROCK EXCAVATION, THE ENGINEER DECIDED TO ADJUST THE VERTICAL PARABOLIC CURVE IN SUCH AWAY THAT THE CURVE WILL JUST CLEAR THE ROCK WITHOUT ALTERING THE POSITION OF PC AND THE GRADE OF TANGENTS. DETERMINE THE ELEVATION AND STA OF THE NEW PT.

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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1. IN A CERTAIN ROAD CONSTRUCTION IS UNDERTAKEN DPWH, IT VWAS
DECIDED TO CONNECT A FORWARD TANGENT OF 3% AND A BACK
TANGENT OF -15% BY A 300 M SYMMETRICAL PARABOLIC GURVE. IT WAS
DISCOVERED THAT THE GRADE INTERSECTION AT STA 10+100 WHOSE
ELEVATION IS 150 M FALLS ON ROCKY SECTION. WITH THE EXPOSED
BOULDER AT ELEVATION 1102.67 TO AVOID ROCK EXCAVATION, THE
ENGINEER DECIDED TO ADJUST THE VERTICAL PARABOLIC CURVE IN
SUCH AWAY THAT THE CURVE WILL JUST CLEAR THE ROCK WITHOUT
ALTERING THE POSITION OF PC AND THE GRADE OF TANGENTS.
DETERMINE THE ELEVATION AND STA OF THE NEW PT.
Transcribed Image Text:1. IN A CERTAIN ROAD CONSTRUCTION IS UNDERTAKEN DPWH, IT VWAS DECIDED TO CONNECT A FORWARD TANGENT OF 3% AND A BACK TANGENT OF -15% BY A 300 M SYMMETRICAL PARABOLIC GURVE. IT WAS DISCOVERED THAT THE GRADE INTERSECTION AT STA 10+100 WHOSE ELEVATION IS 150 M FALLS ON ROCKY SECTION. WITH THE EXPOSED BOULDER AT ELEVATION 1102.67 TO AVOID ROCK EXCAVATION, THE ENGINEER DECIDED TO ADJUST THE VERTICAL PARABOLIC CURVE IN SUCH AWAY THAT THE CURVE WILL JUST CLEAR THE ROCK WITHOUT ALTERING THE POSITION OF PC AND THE GRADE OF TANGENTS. DETERMINE THE ELEVATION AND STA OF THE NEW PT.
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