The ground around your basement walls contains a lot more than dirt. Water filters its way through the soil, keeping our plants and gardens healthy, but where does it go when it hits your foundation?

A hydrostatic stress is one for which the diagonal terms of the stress tensor are of equal value and the off-diagonal terms are zero. For this situation the diagonal terms are equal to -p, where p is ...

Theoretically, it is just as true of the lever, that any weight, however small, may be made by its means to raise any weight, however large, as of the water bellows, or the hydrostatic press.