Figure 6 shows the comparison between filling, discharging pressures and finite element analysis when
the silo is full of wheat. As illustrated from Fig.5, the discharging pressures envelope the finite element
pressures as the silo is full in the upper half of silo height except in the lower of the silo the finite element
pressures envelope recommended pressures during discharging. Fig. 6 Illustrated that the result of finite
element (h/d = 1 – 2) the pressure in squat silos curve come closest to the straight line. For wheat silos with
great aspect ratio the peak filling pressure as the silo is full equals two times that is determined analytically from
Janssen equation. However, in case of large silos with small aspect ratio the peak filling pressure due to finite
element is about 1.6 times the discharging pressure determined according to Janssen equation.