GB 50500-2013 第1.1条
| **Appendix D.** | **Ventilation and Air Conditioning Works (Guest Rooms/Restaurants)**: **Ductwork** shall be measured by the developed area as shown on the design drawings (areas occupied by inspection holes, test holes, supply air outlets, return air inlets, etc. shall not be deducted). **Duct length** shall be based on the centerline length shown on the design drawings (main ducts and branch ducts shall be divided at their centerline intersections). **Equipment** (such as fan coil units and air handling units) shall be measured by quantity as shown on the design drawings in "units". |