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34 Figure 4-5. Typical single-cell precast cross section. calculated by multiplying the values shown here by the average width of each element, except that "Izz" is multiplied by L3. The bent cap and abutment diaphragms were assumed to be relatively rigid. Cap and column element properties are shown in Table 4-4. Loads Each bridge configuration was subjected to dead load (self weight), live load, and post-tensioning loads. A con- Figure 4-7. Typical two-cell cast-in-place cross centrated load of 100 kips was used to simulate the live load. section. Figure 4-6. Idealized single-cell precast cross section.