It's very hard to say without the model (or a least of view of the design strips). Consider the bottom bars in a beam. The program is going to determine the number of bars (based on the bar size specified in the design strip properties) required to meet the code min, service, strength and ductility requirements for that beam. Then, it will try to place them in the bottom most part of the section. If the beam is not wide enough then the spacing of those bars could get tight and a warning is triggered. Most likely, the strip layout has one or more unusual sections (maybe a section that intersects a perpendicular beam) leading to a large area of steel required. Adjusting the strip so that the sections are all rational would be the solution. For more see: communities.bentley.com/.../ram-concept-design-strips-tn
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