Load testing of a structure is desirable in three major instances:
- the structure is not rating for legal or desired permit level loads after refined load rating procedures
- structure-specific performance concerns warrant the need for a detailed investigation
- the structure lacks documentation, making capacity impossible to determine.
Intelligent Infrastructure Systems employs the ASCE-adopted Structural Identification (St-Id) framework in approaching these cases where live load testing might be warranted. This approach targets instrumentation only to areas which will provide value directly through measurement or indirectly through correlation with finite element models. Targeted instrumentation, as opposed to taking many measurements with the hope of capturing something of interest, saves significant resources both in the design and in the installation of the system as well as the back-end processing and interpretation.
Intelligent Infrastructure Systems has experience in load testing of structures for capacity evaluation of both documented and undocumented bridges as well as to address specific performance issues. In testing for capacity,
Intelligent Infrastructure Systems staff have carried out multiple proof-level and diagnostic-level load tests on a variety of structure types ranging from simple span multi-girder systems to long span continuous trusses. Our experience in structure-specific concerns includes live load testing for measurement of nominal strain values in fatigue prone details, load distribution, nature of vibration response of a structure, and evaluation of retrofit detail performance. Intelligent Infrastructure Systems employs a targeted approach to testing, always keeping in mind how the data will be used to inform the critical decisions at hand.
For more information about our Load Testing services, please contact us at firstname.lastname@example.org