2p

where A is equal to 3(N/2 — e) is determined from moment equilibrium. The plate should be proportioned such that fmax does not exceed the value calculated using Equation 4.124. tp is to be determined from Equation 4.125.

FIGURE 4.30 Eccentrically loaded column base plate (small load eccentricity).

FIGURE 4.30 Eccentrically loaded column base plate (small load eccentricity).

For plates subjected to large bending moments so that e > N/2, one needs to take into consideration the tensile force develops in the anchor bolts (Figure 4.32). Denoting Tas the resultant force in the anchor bolts, A as the depth of the compressive stress block, N' as the distance from the line of action of the tensile force to the extreme compression edge of the plate, force equilibrium requires that

and moment equilibrium requires that

0 0

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