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Regarding the selection of steel structural materials

2023-02-02View Original

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Hello, teachers! I have a question: In the Steel Structure Design Code GB50017-2017, in clause 5.3.3, the second sub-clause states that when the operating temperature is between 0 and -20 degrees Celsius, the grade of Q345 used should be no lower than grade C. May I ask, does the working temperature referred to here mean the annual average temperature, the average temperature in the coldest month, or the extreme minimum temperature? Where can I find such detailed explanatory references? Thank you!

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