Reinforced Concrete Structures Prestress Concrete Analysis of Prestress

The bearing stress on concrete after accounting for all losses due to relaxation of steel, elastic shortening, creep of concrete, slip and seating of anchorage shall not exceed ______

1
\(0.25\;{f_{ci}}\sqrt {\frac{{{A_{br}}}}{{{A_{pun}}}}} \)or 0.8 fci whichever is smaller
2
\(\;0.48\;{f_{ci}}\sqrt {\frac{{{A_{br}}}}{{{A_{pun}}}}} \;\;\) or 0.8 fci whichever is smaller
3
\(0.16\;{f_{ci}}\sqrt {\frac{{{A_{br}}}}{{{A_{pun}}}}} \) or 0.8 fci whichever is smaller
4
\(0.34{f_{ci}}\sqrt {\frac{{{A_{br}}}}{{{A_{pun}}}}} \)or 0.8 fci whichever is smaller

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