Self Study: Horizontal Curves Set 2

Problem (1)

Given the following information:

Δ = 45°49'45"
D = 07°09'43.1"
L = 693.90 ft
T = 338.17 ft
LC = 622.97 ft

 

Curve Table

  Station di, ft   δi   ci, ft  
EC Back 57+24.88 639.90 = L 24°54'52" = Δ/2 622.97 = LC
  57+00 615.20   22°01'26"   599.99  
  56+00 515.02   18°26'34"   506.18  
  55+00 415.02   14°51'43"   410.38  
  54+00 315.02   11°16'51"   312.99  
  53+00 215.02   7°42'00"   214.38  
  52+00 115.02   4°07'08"   114.92  
  51+00 15.02   0°32'17"   15.02  
BC 50+84.98 0.000   0°00'00"   0.000  

 

Determine curve point coordinates.

 

Problem (2)

For the following short alignment data:

What are the coordinates of curve station 20+00.00?

 

Solution