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Which attribute is not governed by the ICC 400 concerning logs?

  1. Size

  2. Type of wood

  3. Treatment of logs

  4. Installation methods

The correct answer is: Size

The attribute that is not governed by the ICC 400 concerning logs is the size of the logs. The ICC 400 is a code that provides guidelines and standards for log structures, addressing critical factors such as the type of wood, treatment of logs, and installation methods, which directly impact the safety and integrity of log construction. While the size of logs can have practical implications in terms of structural design and appearance, the ICC 400 does not set specific regulations concerning their dimensions. Instead, the code focuses on ensuring that the materials used (including wood type and treatment) meet safety and performance standards while providing guidelines for appropriate installation practices to ensure the overall stability and suitability of the building. This distinction allows builders and inspectors to apply more flexibility in choosing log sizes while still adhering to the critical elements outlined in the ICC 400.