Question

oN2ohtal curves .The deflecti n angle used when sighting back on the curve during a move up was wrong, causing the curve to get wasn't enough, and the construction equipment removed the stakes. Using the wrong backsight when laying out a curve by QUESTIONS AND PROBLEMS Calculate the missing curve parts in the following Table. Curve# 1 of Curve E M.O. LC 1 18°54' 357.25 2 2930 434.25 250.00 120.00 4 5 23 16' 6 4.32 | 3.90 | 256.78 124.97 441.01 275.87 20° 343.23 754.86 433.12 546.77 9 96145 (ぢ-10 145044,1 623.24 11. Given PI 19+87, "I" angle 42° 14', R 900, compute tangent (T, the length of arc (L), and compute the stationing of the PC and T of arc (L), and compute the stationing of the PC and PT curve. T, L, LC, Da, E, MO, Stationing of the PC and PT deflection at every half-station. deflection at every 20-meter station. components of the curve. 12. Given PI @32 +43, "T" angle 7° 29', Da-9° , compute tangent (T), length 13. Given: PI 5+555, "I" angle of 22° ,R 770 meters, compute the parts of the 14. Given PI @35+ 24.776, "I" angle 33° 54, and R 800 feet, compute the 15. Given PI @ 17+59.424, "I" angle 15° 52'12", R-288 meters, compute the 16. Given Da 3.22 degrees, L 632.62', and PC 19+73.42, find the remaining 17. Two highway tangents intersect with a right deflection I angle of 21° 35 00 at PI sta. 12 +12. A 04° 30'00" horizontal curve (Da) is to be used to connect the tangents. Compute R, T, L, E, LC, and MO for the curve. Compute in tabular form the deflection angles to lay out the curve at half stations. Compute the short and long cihords. curvature (Da) is known to be 21.000°, and the station of the PI is 155+75.42, what is the central angle of this curve? 18. If a simple circular curve has a length of curve 410', and the degree of Two parallel highways 650' apart are to be joined by a reverse curve made up of two circular curves of equal radii. These curves are to have a (Da) of 3 Determine all parts of these curves. 19. 20. Two parallel highways 1000 meters apart are to be joined by a reverse curve up of two circular curves of equal radi. These curves are to have a radius of 700 meters. Determine all parts of the curves.

Please complete the chart and explain how to solve number 16. Thank you.

Answer 1

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5 Cug vre 081 70.33 m

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