As presented earlier, the short-cut technique for Area
calculation of tunnels cross-section, the calculation for Area of D-Shape
tunnels has been specified this time.
For calculating the cross-sectional area, 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 AREA CBS FACTOR, the calculation has been shown below……..
C/S AREA OF D-SHAPE TUNNEL = d2 X CBS FACTOR
|
Where,
d = Dia. Of D-Shape tunnel
CBS FACTOR = 0.8927
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 0.8927
62 x 0.8927 ->
32.13 m2
The above calculation can be verified using Auto-Cad or any
mathematical technique
area
32.1372 m2
perimeter 21.4248 m
|
