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## Section 5.0 - Manufacturing

ID #1146

## Section 5.4.2 gives requirements for Non Pre-Qualified Steel stating the elongation shall be less than 18%. Where this is a change from the previous code, is there a way to justify keeping the old towers/ poles that used steel with lower elongation, when there is a change on loading for the structure?

Section 5.4.2 gives requirements for Non Pre-Qualified Steel stating the elongation shall be less than 18%. Where this is a change from the previous code, is there a way to justify keeping the old towers/ poles that used steel with lower elongation, when there is a change on loading for the structure?
Response: There were no requirements for Pre-Qualified Steel in the previous TIA-222 revision. The requirement for material for the current standard outlines structural steel requirements for structures designed and manufactured in accordance with the TIA-222-G standard. Evaluation of materials for existing structures should be made by a qualified engineer considering the type of structure, loading, temperature considerations and the type of construction (bolted / welded), etc.

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**Related entries: **

- How do I use this Site?
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- Section 2.6.9.2Can I use loading that is less than the values prescribed by the written TIA-222-G and claim compliance with the standard? If so, under what conditions?
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Author: John Erichsen

Revision: 1.0

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