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3107F.2.9 Concrete Pile Caps With Concrete Deck
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Pile caps and decks are capacity protected components. Use the procedure of Section 3107F.2.5.7 to establish the over strength demand of the plastic hinges. Component capacity shall be based on nominal material strengths, and reduction factors according to ACI 318 [7.7].
For new pile caps and deck, Level 1 seismic performance shall utilize the design methods in ACI 318 [7.7]; Level 2 seismic performance shall be limited to the following strains:
| Deck/pile cap: | εc ≤ 0.005 |
| Reinforcing steel tension strain: | εS ≤ 0.01 |
For existing pile caps and deck, the limiting strain values are defined in Table 31F-7-5.
Concrete components for all nonseismic loading combinations shall be designed in accordance with ACI 318 [7.7].
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FIGURE 31F-7-1
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