To arrangement of vertical bottoms cylindrical tanks

The article considers bottoms with and without fringes. It is clearly shown that the specific consumption of steel on the bottom and wall is noticeably reduced with an increase in the volume of the tank; at the same time in the bottom the specific consumption of steel is less than in the wall by more than 3 times; for small tanks, approximate curves describing the effect of tank volume on the specific flow rate steel in the wall and bottom are presented. The article presents graphs and their analysis for large-sized tanks; it is shown that the central part of the bottom has a specific consumption of steel 2... 2.5 times greater than that of the margins. It was revealed that with an increase in the volume of the tank, the specific metal consumption of both the margins and the central part of the bottom noticeably decreases; however, at volumes of 10000 m3 or more, it is practically constant.