Round wood posts are a great way to mark property lines and keep livestock contained. These posts come with a natural taper. The diameter stated is the approximate diameter of the top of the post, whereas the bottom (butt) end of the post will be larger. Posts will taper approximately 1/10 of an inch per foot or slightly more. Chromated Copper Arsenate (CCA) pressure-treated wood products have stood the test of time, with some products installed as far back as the 1940s still being in serviceable condition today. Though restricted from use in residential applications, it is still widely accepted in the building industry as the materials of choice for post frame buildings, agricultural fencing, and permanent wood foundations.