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 first step in building a block wall is pouring a concrete footing for the blocks to rest on. The footing has to be below frost line and as level as you can make it. For a foundation wall with 7 courses (rows) of block, the footing was 30 inches below grade, 24 inches wide and 12 inches deep. Footings require a lot of concrete, so if you're building long walls, it might be a good idea to hire a contractor to pour the footings.