4.A circular curve needs to be laid out. The degree Da is to be 36°. A full stat

Question

4.A circular curve needs to be laid out. The degree Da is to be 36°. A full station length is defined as 100 tt in esired to stake 1/5 stations on the curve using feet as the measurement unit. At P.I., the intersection angle I was measured as at P.I. had a chainage of 89+45.032. Find the following: of the curve (arc definition) 1000 0'0". The station R, T and L Chainage of P.C and P.T Initial and final sub chord lengths Deflection angles for Initial and final sub chord lengths Deflection angles for 1/5 station Construct the data table (3 data row from bottom is enough)

Explanation / Answer

Defining Curve Parameters
============================================================
Curve to the right of the back tangent as viewed from the PC.
Intersection Angle = 100°00'00"
Degree of Curvature = 36°00'00"
Radius = 159.155
Circular Curve Length = 277.778
Tangent Distance = 189.673
Circular Curve Long Chord = 243.840
Middle Ordinate = 56.852
External = 88.446
PI Stationing = 89+45.032
90+33.136 Back = 91+34.705 Ahead
============================================================
Station | Chord | Defl. Increment | Defl. Angle |
========================================================================
90+33.136 | 13.133 | 2°21'52" | 50°00'00" |
90+20.000 | 19.987 | 3°36'00" | 47°38'08" |
90+00.000 | 19.987 | 3°36'00" | 44°02'08" |
89+80.000 | 19.987 | 3°36'00" | 40°26'08" |
89+60.000 | 19.987 | 3°36'00" | 36°50'08" |
89+40.000 | 19.987 | 3°36'00" | 33°14'08" |
89+20.000 | 19.987 | 3°36'00" | 29°38'08" |
89+00.000 | 19.987 | 3°36'00" | 26°02'08" |
88+80.000 | 19.987 | 3°36'00" | 22°26'08" |
88+60.000 | 19.987 | 3°36'00" | 18°50'08" |
88+40.000 | 19.987 | 3°36'00" | 15°14'08" |
88+20.000 | 19.987 | 3°36'00" | 11°38'08" |
88+00.000 | 19.987 | 3°36'00" | 8°02'08" |
87+80.000 | 19.987 | 3°36'00" | 4°26'08" |
87+60.000 | 4.641 | 0°50'08" | 0°50'08" |
87+55.359
========================================================================

Related Questions

Navigate

• Browse (All)
• Browse 4
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.