Calculation of area of irregular plane surfaces - Problem 4

Unit 6- Calculation of area and volume

Calculation of area of irregular plane surfaces

Problems
4) Find out the cross sectional area of the stack as shown in Fig. The distance between each station is 1.5 m. apart.

Fig8


Cross sectional area of the stack
A = h/2 [(y0+yn+2(y1+y2+y3+y4+y5+…..yn-1)]
= 1.5/2 [(1+0+ 2(3.6+5.1+6.7+7.9+10.3+14.2+15.6+14.1+13.8+12.6+10.3)]
= 172.05 m2

Last modified: Tuesday, 26 April 2011, 8:59 AM