GB 50243-2016 第4.2.5条
| **** | **Duct reinforcement**: Hotel ducts with a side length ≥630mm (e.g., main ducts in the lobby and banquet hall) must be reinforced (e.g., with angle steel or reinforcing ribs) to prevent operating noise and vibration. |
GB 50243-2016 第4.2.5条 Code for Acceptance of Construction Quality of Ventilation and Air Conditioning Works
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