Saturday 2 May 2015

PERIMETER OF HORSE SHOE SHAPE TUNNEL (Excluding Invert Arch)

For calculating the cross-sectional Perimeter of Horse Shoe Shape, most of the time we depend on Auto Cad, as well as various hectic calculations.
From my past experiences and as per knowledge, the short-cut calculation has been developed, called as CBS FACTOR, the calculation has been shown below……..

 PERIMETER OF HORSE SHOE SHAPE TUNNEL =  d X CBS FACTOR
                    (Excluding Invert Arch)


Where,
d = Dia. Of horse shoe shape tunnel
CBS FACTOR = 2.41880624

From above formula, we can calculate Perimeter instantly with simple multiplication and division.

For example….
For a 6mt. dia tunnel, the Perimeter has been calculated…
Perimeter = d X 2.41880624
            6 X 2.41880624 ->  14.512  mtrs
The above calculation can be verified using Auto-Cad or any mathematical technique






     


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