For calculating the cross-sectional area, most of the time we depend on AutoCAD, as well as various hectic calculations.
From my past experiences and as per knowledge, the short-cut calculation has been developed, called the AREA CBS FACTOR. The calculation has been shown below. …..
C/S AREA OF HORSE SHOE SHAPE TUNNEL = d2 X CBS FACTOR |
Where,
d = Dia. Of horse shoe shape tunnel
CBS FACTOR = 0.829323611
From above formula, we can calculate Area instantly with simple multiplication.
For example….
For a 6mt. dia tunnel, the Area has been calculated…
Area = d2 x 0.829323611
62 x 0.829323611 -> 29.85 m2
The above calculation can be verified using Auto-Cad or any mathematical technique
