Section 4.3.5.1 Design compressive stresses (Transfer)

For beams and one-way slabs, compressive stresses in concrete, based on the concrete section, are limited to 0.5f_ci.

For beams and one-way slabs, compressive stresses in concrete, based on the concrete sections, at the concrete section centroid are limited to 0.4f_ci.

For two-way slabs, compressive stresses in concrete, based on the concrete section, are limited to 0.24f_ci in the support region and 0.33f_ci in the span region [TR 43, 6.10.2].

For sections with multiple concrete mixes, the minimum f_ci is used to determine the limit stress and the peak stress reported may be approximate.

No check is made to ensure the cross section is post-tensioned

Note: Assume the

\sqrt{}

in TR 43 table 2 for compressive stresses is a misprint.