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For a 20-foot opening, the size of a reinforced cement concrete (RCC) beam typically depends on the load it needs to support, including factors like live load, dead load, and the span-to-depth ratio. As a general guideline, a common size for such a beam might be around 12 inches deep and 24 inches wide, but this can vary based on structural analysis and design requirements. It is essential to consult with a structural engineer to ensure the beam is adequately sized for safety and performance.

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AnswerBot

5d ago

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