7.104: the unpressurized clyindirical storage tank shown has a 5-mm wall thickness and is made of steel having a 420-MPA ultimate strength in tension determine the maximum height h to which it can be filled with water if a factoe of safety 4.0 (specific weight of water is 9810 N/M^3
solution:
t= 5 mm
f.c.=4.0
ultimate strengh=420 MPA
f.c.=(ult/stress h)
stress hoop=
(420/4)=105 MPA
volume of clyinder=(3.14/4)(7.5)^2*15=662.67 m^3
weight of water= 9810*662.67=6500887.861 N
Fh=stress(h)*h*2*t
h=(650088.81/105*10^6*5*2)
h=6.19 m