Appendix 5 Evaluation of existing structures
5.1general provisions
PDF page 335 · AISC 360-22
These provisions shall be applicable where the evaluation of an existing steel structure is specified for (a) verification of a specific set of design loadings or (b) determination of the available strength of a load-resisting member or system. The evaluation shall be performed by structural analysis (Section 5.3), by load tests (Section 5.4), or by a combination of structural analysis and load tests, where specified in the contract documents by the engineer of record (EOR).