Column support for the roof of cylindrical storage tank must be provided for___________________?
Correct answer: D. Large diameter tanks
- A. Small diameter tanks
- B. All tanks irrespective of their heights and diameters
- C. Small diameter tall tanks
- D. Large diameter tanks
Explanation
Large-diameter tank roofs require internal columns because the roof plates and supporting structure cannot span the wide diameter economically without intermediate support. Small tanks can often support the roof without columns.
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