N

FIGURE 4.29 Failure models for centrally loaded column base plates: (a) plate with large m, n; (b) lightly loaded plate with small m, n; and (c) heavily loaded plate with small m, n.

b f m d m column flanges and both sides of the column web as shown in Figure 4.29c. The following equation can be used to calculate the required plate thickness:

V 0.90FyBN

where I is the larger of m, n, and In' given by

and in which

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