Civil Engineering - Surveying - Discussion

Discussion Forum : Surveying - Section 8 (Q.No. 7)
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
5.73°
5.37°
3.57°
3.75°.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
17 comments Page 1 of 2.

Abhesh said:   2 years ago
The degree of the curve is 5.73 degrees.
The formula for the degree of a curve is:

Code snippet;

Degree = 1720/R.
Use code with caution. Learn more
Where R is the radius of the curve.

In this case, R = 300 m, so the degree of the curve is:

Code snippet:
Degree = 1720/300 = 5.73 degrees.
(1)

MAHIMA CHANDEL said:   1 decade ago
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.

Rahul N L Diwakar said:   8 years ago
@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).
(1)

Revathi said:   6 years ago
Chord length formulae:

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

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

DDM said:   7 years ago
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

Madhukar@vasavicollegeofengineering said:   4 years ago
L = 2Rsin(θ/2).
Where
L= length of chord.
R= Radius of curve.
θ = Degree of curvature.
(2)

Dnyanesh said:   9 years ago
R = 1718.9/D.

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

D = 1718.9/R.
D = 5.73 °.

Amol Lande said:   1 decade ago
R = 1718.9/D.

R: Radius of curve.

D: Degree of curve.

D = 1718.9/R.

D = 5.73°.

Revathi said:   6 years ago
r=180 A/π * Dc.

Another formula for arc or chord length.

Atanu mandal said:   7 years ago
R=1719/D or; D=1719/R,or D=1719/300=5.73°.


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