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Osterberg Load Test
Product code : 791
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Purpose of the test: To determine the load capacity of barrette /bored pile with large bearing capacity (hard to using Vertical static load test). Testing method: Osterberg cell (O-cell) is mounted in the lower pile/barrette body . Ocell act in two directions: upward against the skin friction and downward against toe force and the lower body stress (if any). Testing procedure: arcordance to testing standard: ASTM D1143 or equivalent standards of other countries Testing steps: - To complete the digging hole for barrette / bored pile. - Pour the cement into the bottom of the hole. - Place the steel cage into the hole. - Concreting for barrette / bored pile. - Wait for concrete of barrette/pile reaches design strength. - Installation of the measuring system and hydraulic pump. - Loading. - Record the displacement and pressure. Testing report: - Project name and location. - The employer, designer, pilling contractor and the testing agency. - Document of test piles. - Site record (displacement and pressure). - Load-settlement relationship graphs (above O-cell). - Load-settlement relationship graphs (below O-cell). - Graphs of load and settlement to time Q-s-T) (to compare with vertical load test). - Comments and conclusion with suggested load capacity. - Appendix, include table and record data. |
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