Answer by
danieljitaru (277)
uilding concrete patios requires some planning. Buy materials and tools ahead of time, and rent automatic cement mixer. Concrete calculator: to cover 50 sq. ft. , 6 in. thick, you need 25 bags (pre-mixed, to expedite the project. )Excavate with a garden shovel. In the North, 6 in. Two of these inches are for a bottom layer of gravel