Abstract: An out-of-doors prefabricated, pre-engineered vertical wall structure constructed entirely of pressure treated wood and comprised of successive individual wall sections tightly arranged in an end-to-end pattern. Supporting rectangular posts join immediately adjacent wall sections together end-to-end and occupy the entire space between the sections, each of the posts having flat surfaces facing the ends of immediately adjacent wall sections on opposite sides of the post with upright pairs of spaced cants secured to said flat surfaces so as to form upright channels extending upwardly from top to bottom on the posts, each pair of cants being spaced apart to receive one end of one of said wall sections in a tight relation between said cants.

Abstract: A sound barrier system particularly suited for out-of-doors, ground-mounted installations, such as for a highway noise barrier, comprises a vertical wall composed of successive individual wall sections arranged with immediately adjacent wall sections disposed at an intersecting angle to each other. Immediately adjacent wall sections are rigidly joined together in abutment along a common vertical joint. An earth anchor is anchored into the ground at each vertical joint. Each joint is secured to the corresponding earth anchor so that downwardly directed hold-down forces are applied by the earth anchors to the wall at the bottom portions of the joints.