Which of the following three joists, 12K1, 12K3, and 12K5 has the highest load-carrying capacity for the same span, and which has the least load-carrying capacity and why?
What will be an ideal response?
12K5 has the highest load carrying capacity for the same span, followed by 12K3, and then 12K1. The reason is that 12K5 is the heaviest joist, i.e., its weight per foot is largest, followed by 12K3, and then 12K1.
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