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.
The interlocking blocks can be used to build walls up to 28 inches high. Follow the block manufacturer's instructions concerning wall height limits. Plan your layout. Avoid having downspouts pointed at the retaining wall and, if it's against the house, keep soil and mulch well below the siding. Your retaining wall design will determine how you mark the area. To mark a freeform layout, use a rope or hose to outline the shape. Then use a shovel to mark the outline.