The thirty-degree angle of entry is a compromise which permits the vehicle to be quickly submerged in the paint while keeping tank depth to a minimum.

The model, which describes the sludge thickening and storage processes in a secondary clarifier, can simulate the time variation of the sludge concentration distribution over the tank depth…

For a tank foundation with a relatively thin soft deposit and undrained shear strength increasing with depth, the edge shear failure is likely to be the critical one.