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Calculate the rail stock set over to then a taper of 1 in 10 on a job of 60 mm length?
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Calculate the rail stock set over to then a taper of 1 in 10 on a job ...
Calculation of Rail Stock Set Over


When laying a track, the rails must be set at a slight inward angle to allow for expansion and contraction due to temperature changes. This is known as the rail stock set over. The amount of set over required is determined by the length of the rail and the degree of taper needed.


Calculating the Rail Stock Set Over


In this case, we have a job of 60 mm in length that requires a taper of 1 in 10. To calculate the rail stock set over, we will use the following formula:


Rail Stock Set Over = Length of Rail x Taper


Using the values given, we can calculate the rail stock set over as follows:


Rail Stock Set Over = 60 mm x 1/10

Rail Stock Set Over = 6 mm


Explanation of the Calculation


The formula for calculating the rail stock set over is based on the principle of similar triangles. When the rail is tapered, it creates a right triangle with the base of the rail being the hypotenuse. The taper is given as a ratio of the height of the triangle to the base. By multiplying the length of the rail by the taper ratio, we can determine the height of the triangle, which represents the rail stock set over.


In this case, the rail is 60 mm long and the taper is 1 in 10. This means that for every 10 mm of length, the height of the triangle (or taper) increases by 1 mm. Multiplying 60 mm by 1/10 gives us a taper height of 6 mm, which is the amount of rail stock set over required for this job.


Conclusion


The rail stock set over is an important factor to consider when laying a track. By calculating the required set over based on the length of the rail and the degree of taper needed, we can ensure that the rail is properly aligned and will function correctly over time.
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