Civil Engineering - Surveying - Discussion

7. 

The radius of a simple circular curve is 300 m and length of its specified chord is 30 m. The degree of the curve is

[A]. 5.73°
[B]. 5.37°
[C]. 3.57°
[D]. 3.75°.

Answer: Option A

Explanation:

No answer description available for this question.

Mahima Chandel said: (May 22, 2014)  
C= 2R*sin{(1/2)*I}.

Where C= length of long chord.

c=30 , R=300.

=>(30/600)= sin{(1/2)*I}.
=>(1/20) = sin{(1/2)*I}.
=>I = 2*{sin^-1(1/20)}.
=>I = 5.73 Degree.

Amol Lande said: (Nov 19, 2014)  
R = 1718.9/D.

R: Radius of curve.

D: Degree of curve.

D = 1718.9/R.

D = 5.73°.

Dnyanesh said: (Nov 16, 2016)  
R = 1718.9/D.

R: Radius of the curve.
D: Degree of the curve.

D = 1718.9/R.
D = 5.73 °.

Amit Ami Sharma said: (Dec 14, 2016)  
1719/300 = 5.73°

Quazi Murtaza said: (Jan 9, 2017)  
1718.9/300 = 5.73°.

Sayandeelp said: (Oct 10, 2017)  
How 1718? Explain.

Rahul N L Diwakar said: (Jan 28, 2018)  
@All.

Someone are directly using 1719 or 1718 but this will only work if length of chord is 30 m so use basic formula c = r sin (d/2).

Dushyant Kumar said: (Aug 20, 2018)  
1719/300 = 5.73°.

Atanu Mandal said: (Sep 11, 2018)  
R=1719/D or; D=1719/R,or D=1719/300=5.73°.

Thirupathi said: (Sep 22, 2018)  
Thanks for explaining it.

Ddm said: (Oct 5, 2018)  
R =1719/D is correct because we can say that the length of chord or length of arc is 30 m and finally we get D=5.73

Rakesh said: (Jan 1, 2019)  
1720/D.
= 1720/300 = 5.73.

Shree said: (May 18, 2019)  
Thanks for the answer.

Revathi said: (Sep 18, 2019)  
Chord length formulae:

r = c / 2 sin (Dc/2).

Above formulae after values substitution answer will come.
sin (Dc) = 5.73°.

Revathi said: (Sep 18, 2019)  
r=180 A/π * Dc.

Another formula for arc or chord length.

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