<*      29   DESCRIBE CHAIN BLPRD4                                                                                      
                                                                                                                        
Chain BLPRD4 contains:                                                                                                  
 CUR BLPRD401 CUR BLPRD402 SPI BLPRD402A CUR BLPRD403                           
                                                                                                                        
Beginning chain BLPRD4 description                                                                                      
Description: I-71 NB TO SR 315 NB                                                                                       
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                                   Curve Data                                                                           
                                  *----------*                                                                          
Curve BLPRD401                                                                                                          
P.I.  Station         4001+00.010  N         712,402.805  E       1,823,308.338                                         
Delta       =       2° 00' 00.00" (LT)                                                                                  
Degree      =       1° 00' 00.00"                                                                                       
Tangent     =             100.010                                                                                       
Length      =             200.000                                                                                       
Radius      =           5,729.578                                                                                       
External    =               0.873                                                                                       
Long Chord  =             199.990                                                                                       
Mid. Ord.   =               0.873                                                                                       
P.C.  Station         4000+00.000  N         712,501.259  E       1,823,290.767                                         
P.T.  Station         4002+00.000  N         712,305.023  E       1,823,329.333                                         
C.C.                               N         713,507.869  E       1,828,931.228                                         
Back        = S  10° 07' 07.00" E                                                                                       
Ahead       = S  12° 07' 07.00" E                                                                                       
Chord Bear  = S  11° 07' 07.00" E                                                                                       
                                                                                                                        
Course from PT BLPRD401 to PC BLPRD402 S 12° 07' 07.00" E Dist 426.405                                                  
                                                                                                                        
                                   Curve Data                                                                           
                                  *----------*                                                                          
Curve BLPRD402                                                                                                          
P.I.  Station         4011+46.790  N         711,379.333  E       1,823,528.099                                         
Delta       =      84° 29' 39.10" (LT)                                                                                  
Degree      =      10° 00' 00.00"                                                                                       
Tangent     =             520.385                                                                                       
Length      =             844.942                                                                                       
Radius      =             572.958                                                                                       
External    =             201.046                                                                                       
Long Chord  =             770.433                                                                                       
Mid. Ord.   =             148.825                                                                                       
P.C.  Station         4006+26.405  N         711,888.121  E       1,823,418.851                                         
P.T.  Station         4014+71.347  N         711,439.260  E       1,824,045.022                                         
C.C.                               N         712,008.406  E       1,823,979.041                                         
Back        = S  12° 07' 07.00" E                                                                                       
Ahead       = N  83° 23' 13.90" E                                                                                       
Chord Bear  = S  54° 21' 56.55" E                                                                                       
                                                                                                                        
Spiral BLPRD402A          Type 2    Spiral Element                                                                      
                                                                                                                        
Angle       7° 00' 00.00" (LT) P              1.425   BK N  83° 23' 13.90" E                                            
LS              140.000        K             69.965   AH N  76° 23' 13.90" E                                            
R               572.958        LT            93.406   CB N  78° 43' 12.83" E                                            
YS                5.695        ST            46.733   Defl        2° 19' 58.94"                                         
XS              139.791        LC           139.907   Deg        10° 00' 00.00"                                         
                                                                                                                        
                                                                                                                        
                         Spiral Coordinates                                                                             
                        *------------------*                                                                            
Point           North                   East                  Station                                                   
-----    -------------------    -------------------     -------------------                                             
CS               711,439.260          1,824,045.022             4014+71.347                                             
PI               711,444.641          1,824,091.444             4015+18.080                                             
ST               711,466.626          1,824,182.227             4016+11.347                                             
CC               712,008.406          1,823,979.041                                                                     
                                                                                                                        
                                   Curve Data                                                                           
                                  *----------*                                                                          
Curve BLPRD403                                                                                                          
P.I.  Station         4021+67.612  N         711,597.548  E       1,824,722.865                                         
Delta       =       5° 33' 29.84" (LT)                                                                                  
Degree      =       0° 30' 00.00"                                                                                       
Tangent     =             556.265                                                                                       
Length      =           1,111.658                                                                                       
Radius      =          11,459.156                                                                                       
External    =              13.494                                                                                       
Long Chord  =           1,111.222                                                                                       
Mid. Ord.   =              13.478                                                                                       
P.C.  Station         4016+11.347  N         711,466.626  E       1,824,182.227                                         
P.T.  Station         4027+23.004  N         711,780.220  E       1,825,248.281                                         
C.C.                               N         722,603.876  E       1,821,485.207                                         
Back        = N  76° 23' 13.90" E                                                                                       
Ahead       = N  70° 49' 44.06" E                                                                                       
Chord Bear  = N  73° 36' 28.98" E                                                                                       
                                                                                                                        
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Ending chain BLPRD4 description                                                                                         
