Load Testing of Existing Concrete Structures (Part 1)-Monotonic and Cyclic Load Tests A Case for Each (Recorded Presentation)

Monotonic and Cyclic Load Tests A Case for Each (Recorded Presentation)

Video Transcription

Video Summary

The presentation discusses two concrete load testing protocols provided by ACI: the monotonic test and the cyclic test. The monotonic test, governed by ACI 318, involves loading a structure to its full test capacity, holding it for 24 hours, and monitoring the structure for residual deflections. This test was applied to assess a structurally compromised parking garage deck in Southern California, successful due to its large open space and uniform live load. In contrast, the cyclic test, governed by ACI 437, involves repeated incremental loading to understand structural behavior. It was used for post-tensioned beams in a multifaceted medical office building in Austin due to spatial constraints, varied loading conditions, and specific stress concerns. Both protocols were successfully applied, demonstrating their utility in different scenarios. Key factors influencing protocol choice include test site characteristics, load conditions, time constraints, and structural complexities, with effective planning and adaptability being crucial components.

Keywords

ACI load testing

monotonic test

cyclic test

structural assessment

protocol choice