Practice question
When stressing unbonded post-tensioning tendons, how is the applied force verified in the field?
- By gauge pressure (jacking force) alone; elongation may be ignored
- By measuring elongation alone; the gauge is decorative
- By comparing both the calibrated gauge pressure and the measured elongation with the theoretical values, and investigating if they disagree
- By sounding the slab with a hammer; no jack records are required
Answer: C — By comparing both the calibrated gauge pressure and the measured elongation with the theoretical values, and investigating if they disagree
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