1 This project raises the level of your patio by 2-1/2 to 3-1/2 in. ( 2 depending on the thickness of your decking and whether or not you put spacers under the sleepers). 3  So any door thresholds adjoining the patio must be at least that far above the concrete.
Pacific halibut (Hippoglossus stenolepis) are large flatfish that can be found from the Bering Sea in Alaska to northern California. According to the IPHC, Pacific halibut can reach a maximum length of nine feet and maximum weight of 500 pounds. The oldest recorded age is 55 years for both females and males. They reside along the continental shelf and are found in a broad range of depths (from inshore to 450 meters).
The halibut, like all the flatfish tribe, is normally a ground fish, once the young fry have taken to bottom. But it comes to the surface on occasion (p. 257), and it is a very powerful fish, when hooked.