Here you'll find a variety of crocodilian publications for sale, ranging from current books to fairly old publications and reprints. Other herpetological titles are also available. Zoo Book Sales. A highly recommended site for finding both new and used books on crocodiles, alligators and caimans. Books on other species are also available. articles & features:
Laying the First Course. 1  Start at the edge of the wall thatâs most visible, or the edge that butts up against another structure. If your wall goes across a slope, start at the lowest end. 2  Position the first stone in your trench. Make sure the stone is level from front to back and side to side.
Brick Calculators and Block Calculators Before you can build a retaining wall or any other masonry wall you will need to be able to calculate the concrete masonry blocks you will need to order. Use this calculator to calculate the amount of concrete block needed to construct a masonry wall.Nick Toth's Retaining Wall.To calculate the quantity of brick or block you need to know what size block or brick you want-the unit dimensions that matter to your quantity is length and height-width won't change the quantity, only the width of the wall you are building.efore you can build a retaining wall or any other masonry wall you will need to be able to calculate the concrete masonry blocks you will need to order. Use this calculator to calculate the amount of concrete block needed to construct a masonry wall. Nick Toth's Retaining Wall.