In the interpretation of the standard for \"Steel Welded Atmospheric Pressure Vessels\", at position P160, it refers to the rectangular shape with combined vertical and horizontal reinforcement (Type E)…

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In the interpretation of the standard NB/T47003.1-2009 \"Steel Welded Atmospheric Pressure Vessels\", at page P160, regarding the (E-type) rectangular vessels that are reinforced both vertically and horizontally, I believe the design provisions for the top edge reinforcement in clause 6 are inappropriate. 1. It serves no purpose as a link between the previous and subsequent points; since it has already been established that the spacing between the reinforcing columns specified in Article 5 does not meet the strength requirements, LC=LP should no longer be set at 1000 mm. 2. And when there is no tie rod, HC should also be equal to H1=h1 ； And LC = LP. Because the loading is simply supported on all four sides. This can probably eliminate the tie rod. 3. After the calculation in Article 6, there is nothing further to do. Are there no vertical reinforcement columns left, or should we go back and calculate using LP=1000? This contradicts Article 5. 4. I have never seen a tie-bar structure; the exact design cannot be determined from the front and side views of the example. I would appreciate advice from those who are more experienced – if there are similar structures, I hope they can share them so that I can learn from them. Now design a rectangular container with dimensions 15000X8000X5000, with 5 funnels (rectangular in shape) evenly distributed at the bottom, arranged in X2 rows = 10 funnels in total. It is always filled with water, and under normal conditions, feeding and discharging occur continuously. How should it be designed? What’s the approach? According to the standards, the bottom of rectangular containers is flat, but mine is funnel-shaped – how can the bottom be strengthened? How is the entire container supported (the rectangular container is mounted on a 10,000 steel frame). Thank you!