Liquid filled tank - simulation

Hi guys, I'm trying to help out a coworker analyze a tank design.  Basically it is a retangular tank (10'x12''x5' approx) that is sitting on edge via two wedges (30 deg).  Since the tank is at an angle this is making this interesting.  I am able to apply the non-uniform distributed load to all 6 walls of the tank but I am lacking the force caused by the weight of the water.  When I get to work tomorrow if I get some spare time I will try to post a picture.  I would like to get the shell of the tank meshed and working before I add the reinforcing struts.  Picture a cage with steel plate welded to the inside of it...SolidworksSimulation