Lecture18-Pile-load-Tests

Lecture18-Pile-load- - Foundation Engineering Foundation Engineering Lecture#18 Lecture#18 Pile Load Testing The Incremental Static Load Test The

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Unformatted text preview: Foundation Engineering Foundation Engineering Lecture #18 Lecture #18 Pile Load Testing The Incremental Static Load Test. The Constant-Rate-of-Penetration Test. ASTM’s Quick ML Test (“Quick Maintained Load”). L. Prieto-Portar 2009 Pros versus Cons of load testing a pile Load testing is the most accurate way to determine the ultimate compressive and tensile capacities for deep foundations. Load testing is expensive and time- consuming. Static Pile Load Tests. Static load test involve assembling a full-size prototype foundation at the construction site, and then slowly load it to failure. This method is used to determine the ultimate compressive and tensile load capacities for deep foundations. Advantages of performing static load tests: 1. It allows a more rational design. 2. Considerably more reliable than capacity estimates made by the use of formulas. 3. An improved knowledge of pile-soil behavior. 4. A lower factor of safety may be used on the pile design load. 5. May allow a reduction in required pile lengths. 6. May allow an increase in the pile design load. 7. Serves as confirmation that the design load is adequately supported by the pile. 1. The Incremental Static Load Test. Load and unload the test pile incrementally in three cycles, unless an alternative procedure is specified in the contract documents. Apply each load increment to the pile in as short a period as physically possible. The maximum load applied is twice the pile design load (2X) shown on the plans unless failure occurs first....
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This note was uploaded on 09/07/2011 for the course CEG 4012 taught by Professor Staff during the Spring '10 term at FIU.

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Lecture18-Pile-load- - Foundation Engineering Foundation Engineering Lecture#18 Lecture#18 Pile Load Testing The Incremental Static Load Test The

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