Thank you for your interest in the quality products offered by us here at Chappell’s Ready Mix & Supply in Salem, OH. If you’re in need of concrete and masonry supplies for your project, here are some answers to some of our most frequently asked questions that may help you gauge how much you need in terms of supplies. As always, feel free to contact us directly if you have more questions. How much is a yard of concrete? Home much gravel do I need? How much concrete do I need? How many blocks to a bag of mortar? How do you figure a footer? How do you figure a slab?