Question

for a small deviation angle up to the curve mnicates, cubie parabola and spiral are almost same. ​

Answer 1

Answer:

401. Determination of Radius - (1) The radius of a curve is determined by measuring the versine on a chord of known length, from the equation,

(2) Curves can be designated by the radius in metres or by its degree. The angle subtended at the center by a chord of 30.5 metres, is the degree of the curve.

Curves shall be described invariably by the radius in metres.

(3) For measuring versines of a curve, 20 metres overlapping chords should normally be used with stations at 10 metres intervals. For checking the radii of turn-out and turn-in curves overlapping curve of 6 metres should be used and the versine measuring stations should be located at every 1.5 metres. (The turn-out curve can also be checked by off-sets from the straight with the versine measuring stations 1.5 metres apart.)

(4) The versine is obtained by stretching a fishing/nylon chord or wire taut between the end of chord length decided upon, and the measuring distance between the cord/wire and gauge face of the rail at the middle point of the chord. Care should be taken that the cord or wire is applied to the side of the head of the rail at the gauge point.

RAIL LEVEL AND THE GAUGE

Step-by-step explanation:

Answer 2

here is answer

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