Given: I = 2734’40” and Da = 230’ Required: Curve Data R, T, LC, L, E, M, Lo and Li for curves with...

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Given: I = 2734’40” and Da = 230’ Required: Curve Data R, T, LC, L, E, M, Lo and Li for curves with offsets of 200 feet and the true station chords to stake the parallel curves. 3. Giv
	
Document Preview: 2.  Given:  I = 27?34’40” and Da = 2?30’Required:  Curve Data R, T, LC, L, E, M, 		Lo and Li for curves with offsets of 200 feetand the true station chords to stake the parallel curves.3.Given the following parts of a compound curve; determine the remaining parts.I = 65° 11’;  Is = 37° 36’; Ts = XXXXXXXXXXft.; Ds = 8° 00’ Is = 42° 21’;  IL = 18° 47’; TL = XXXXXXXXXXft.; DL = 5° 20’I  = 78° 36’;  TL = XXXXXXXXXXft.; TS = XXXXXXXXXXft.; XXXXXXXXXXDs = 15° 00’I = 80° 25’; TL = XXXXXXXXXXft.; RL = XXXXXXXXXXft.; XXXXXXXXXXRs = XXXXXXXXXXft.4.Given the following parts of a compound curve; determine the remaining parts.I = 65° 11’;  Is = 37° 36’; Ts = XXXXXXXXXXft.; Ds = 8° 00’ Is = 42° 21’;  IL = 18° 47’; TL = XXXXXXXXXXft.; DL = 5° 20’I  = 78° 36’;  TL = XXXXXXXXXXft.; TS = XXXXXXXXXXft.; XXXXXXXXXXDs = 15° 00’I = 80° 25’; TL = XXXXXXXXXXft.; RL = XXXXXXXXXXft.; XXXXXXXXXXRs = XXXXXXXXXXft.5.Given the following simple spirals:  Compute values of X, Y, Xo, o, LT (Long Tangent spiral), ST (Short Tangent spiral) and LC (Long Chord of the spiral). Do and show all your work on computation paper.Ls = XXXXXXXXXXft.; Da = 9° 00’Ls = XXXXXXXXXXft.; Da = 2° 00’Ls = XXXXXXXXXXft.; Da = 25° 00’Ls = XXXXXXXXXXft.; Da = 6° 00’

David · Accepted Answer

SRV 111 Surveying II
188075_80574_1_TM_C_TTs280413-96827-2 1
Solution 
From the diagram it is very clear that 
tanDa = PP
’ / VP’ 
tanDa = 0.0969 
Da = 5.53
0 (Answer)
R = 5729.582/Da  
R = 1036 ft
T = R tanI/2 
T = 536 ft
Sta PC = Sta PI – T 
Sta PC = 3725.40 – 536 = 31 + 89.4 (answer) 
188075_80574_1_TM_C_TTs280413-96827-2 2 
 
2.  Given:  I = 2734’40” and Da = 230’ 
Required:  Curve Data R, T, LC, L, E, M,  
  Lo and Li for curves with offsets of 200 feet 
and the true station chords to stake the parallel  
curves. 
Solution 
Da = 230’ , I = 2734’40” 
 
Formula for calculating R is  
R = 5729.578 / Da 
R = 2291.83 Ft (Answer)
Formula for calculating T is 
T = Rtan(I/2) 
T = 562.43ft (Answer)
Formula for calculating LC is  
LC = 2Rsin I/2 
LC = 1092.46ft (Answer)
Formula for calculating L is  
L = 0.0174533 R I 
L = 1103.11 ft(Answer)
Formula for Calculating E is  
E = (R/cosI/2) – R 
E = 68ft (Answer)
Formula for calculating M is  
M = R(1-cosI/2) 
188075_80574_1_TM_C_TTs280413-96827-2 3 
M = 66.04ft (Answer)
3. 
Given the following parts of a compound curve; determine the remaining 
parts.
a. I = 65° 11’;  Is = 37° 36’; Ts = 481.63 ft.; Ds = 8° 00’ 
Solution 
Since I = IL + Is  
IL = 28.58
0  
Rs = 5729.582/Ds = 716.19 ft
b.  Is = 42° 21’;  IL = 18° 47’; TL = 501.26 ft.; DL = 5° 20’
I = IL + Is = 61
0 8’ 
Ts = RstanIs/2 
RL = 5729.578 / DL  = 1074.20 ft
c. I= 78° 36’;  TL = 518.62 ft.; TS = 371.44 ft.; Ds = 15° 00’
Rs = 5729.578 / Ds = 382 ft  
Now from Rs and Ts we can determine Is 
Ts = Rs tan Is/2 
Is = 88.39
0
d.

Given: I = 2734’40” and Da = 230’ Required: Curve Data R, T, LC, L, E, M, Lo and Li for curves with offsets of 200 feet and the true station chords to stake the parallel curves. 3. Giv Document...

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