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to the positive moment region. For the exterior span, the percentage of distribution is a function of the degree of restraint, as given in Table 7.9.

After the static moment is proportioned to the negative and positive regions, it is further apportioned on to the column and middle strips. For positive moment regions, the proportion of moment assigned to the column strips is given in Table 7.10. The parameter a1 is a relative stiffness of the beam to slab, based on the full width of the equivalent frame:

Ecblb

For interior negative moment regions the proportion of moment assigned to the column strip is given by Table 7.11.

For negative moment regions of an exterior span, the moment assigned to the column follows Table 7.12, which takes into account the torsional stiffness of the edge beam. The parameter bt is the ratio of torsional stiffness of edge beam section to flexural stiffness of a width of the slab equal to the center-to-center span length of the beam

EcbC

The remaining moment, that was not proportioned to the column strips, is assigned to the middle strips.

Column strip moments need to be further divided into their slab and beam. The beam should be proportioned to take 85% of the column strip moment if aIZ1/Z2 > 1.0. Linear interpolation is applied if this parameter is less than 1.0. If the beams are also part of a lateral force resisting system, then moments due to lateral forces should be added to the beams. After the assignment of moments, flexural reinforcement in the beams and slab strips can be determined following the same design procedures presented in Sections 7.12.2 and 7.12.3 for regular beams and one-way slabs.

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