Concrete patios are typically 4 inches thick and range from a basic broom-swept finish to complex colors, stamping, and designs. http://L.Iv.Eli.Ne.S.Swxzu40Hu.Feng.Ku.Angn.I.Ub.I.xn--.xn--.U.K37@cgi.members.interq.or.jp/ox/shogo/ONEE/g_book/g_book.cgi