Railway Engineering
In a B.G. railway track, the specified ruling gradent is 1 in 250. The horizontal curve of 3° on a gradient of 1 in 250 will have the permissible gradient of

1 in 457
1 in 357
1 in 257
1 in 512

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Railway Engineering
The treadle bar is provided

near and parallel to inner side of both the rails
at right angle to the rail
near and parallel to inner side of one of the rails
in the middle of the track a little in front of the toes of the tongue rail

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