Sand in a box - Load distribution

[flyforever85]

I have a box made by six steel faces riveted to each other through angles. The box can be filled with up to 270 kg of sand. I need to do a structural analysis of the box. How would I simulate the pressure distribution of the sand inside the box? I though as a rough estimation it could be a sort of hydrostatic pressure (like water). I read about the lateral soil pressure but I'm not sure I ca apply that to my case. Any ideas?

 

[DaveAtkins]

Yes, the lateral soil pressure will be similar to hydrostatic pressure, except the pressure will be the equal to the weight of the sand times the coefficient of at rest pressure.

DaveAtkins