"Outside many hotels, we can see a large smoke exhaust pipe to remove useless exhaust gas, but did you know?"

高层建筑的通风国产精品伦一区二区三级视频99无码熟妇丰满人妻啪啪设施应分为机械国产精品伦一区二区三级视频设施和可开启外窗的自然国产精品伦一区二区三级视频设施。

Ventilation and smoke exhaust pipe facilities in high-rise buildings should be divided into mechanical smoke exhaust facilities and natural smoke exhaust facilities that can open external windows.

房间的机械国产精品伦一区二区三级视频系统是按防烟分区设置的。

The mechanical smoke exhaust system of the room is arranged according to the smoke prevention zones.

（1）一类高层建筑和建筑高度超过32m 的二类高层建筑的下列部位应设国产精品伦一区二区三级视频设施：

(1) Smoke exhaust facilities shall be provided in the following parts of Class I high-rise buildings and Class II high-rise buildings with a building height exceeding 32m:

1）长度超过20m 的内走道；

1) Internal walkways exceeding 20m in length;

2）面积超过100m2，且经常有人停留或可燃物较多的房间；

2) Rooms with an area of more than 100m2 and frequently occupied or with a large amount of combustibles;

3）高层建筑的中庭和经常有人停留或可燃物较多的地下室。

3) The atrium of high-rise buildings and the basement where there are often people staying or there are many combustibles.

（2）通风、空气调节系统应采取防火、防烟措施。

(2) Fire and smoke prevention measures shall be taken for ventilation and air conditioning systems.

（3）一类高层建筑和建筑高度超过32m 的二类高层建筑的下列部位，应设置机械国产精品伦一区二区三级视频设施：

(3) Mechanical smoke exhaust facilities shall be provided in the following parts of Class I high-rise buildings and Class II high-rise buildings with a building height exceeding 32m:

无直接自然通风，且长度超过20m 的内走道或虽有直接自然通风，但长度超过60m 的内走道；

Internal walkways with no direct natural ventilation and a length of more than 20m or internal walkways with direct natural ventilation but a length of more than 60m;

面积超过100m2，且经常有人停留或可燃物较多的地上无窗房间或设固定窗的房间；

Rooms without windows or with fixed windows on the ground that have an area of more than 100m2 and often have people staying or there are many combustibles;

不具备自然国产精品伦一区二区三级视频条件或净空高度超过12m 的中庭；

Atrium without natural smoke exhaust conditions or with a headroom exceeding 12m;

除利用窗井等开窗进行自然国产精品伦一区二区三级视频的房间外，各房间总面积超过200m2 或一个房间面积超过50m2，且经常有人停留或可燃物较多的地下室。

Except for rooms with windows such as window wells for natural smoke exhaust, the total area of each room exceeds 200m2 or the area of a room exceeds 50m2, and there are often people staying or there are many combustibles in the basement.

设置在高层建筑内的通风国产精品伦一区二区三级视频99无码熟妇丰满人妻啪啪设施，应具备以下要求：

Ventilation and smoke exhaust pipe facilities installed in high-rise buildings should meet the following requirements:

（1）国产精品伦一区二区三级视频口应设在顶棚上或靠近顶棚的墙面上，且与附近出口沿走道方向相邻边缘之间的水平距离不应小于1.50m。设在顶棚上的国产精品伦一区二区三级视频口，距可燃构件或可燃物的距离不应小于1.00m。

(1) The smoke exhaust outlet shall be located on the ceiling or on the wall adjacent to the ceiling, and the horizontal distance from the adjacent edge of the nearby emergency exit along the walkway direction shall not be less than 1.50m. The distance from the smoke outlet on the ceiling to combustible components or combustible materials should not be less than 1.00m.

国产精品伦一区二区三级视频口平时关闭，并应设置有手动和自动开启装置。

The smoke outlet shall be normally closed and equipped with manual and automatic opening devices.

（2）防烟分区内的国产精品伦一区二区三级视频口距远点的水平距离不应超过30m。

(2) The horizontal distance from the smoke outlet in the smoke control zone to the remote point should not exceed 30m.

在国产精品伦一区二区三级视频支管上应设有当烟气温度超过280℃时能自行关闭的国产精品伦一区二区三级视频防火阀。

The smoke exhaust branch pipe shall be equipped with a smoke exhaust fire damper that can be automatically closed when the smoke temperature exceeds 280 ℃.

（3）国产精品伦一区二区三级视频风机可采用离心风机或采用国产精品伦一区二区三级视频轴流风机，并应在其机房入口处设有当烟气温度超过280℃时能自动关闭的国产精品伦一区二区三级视频防火阀。国产精品伦一区二区三级视频风机应保证在280℃时能连续工作30min。

(3) The smoke exhaust fan can be a centrifugal fan or an axial flow smoke exhaust fan, and a smoke exhaust fire damper that can automatically close when the smoke temperature exceeds 280 ℃ should be installed at the entrance of the machine room. The smoke exhaust fan shall be able to operate continuously for 30 minutes at 280 ℃.

（4）机械国产精品伦一区二区三级视频系统中，当任一国产精品伦一区二区三级视频口或国产精品伦一区二区三级视频阀开启时，国产精品伦一区二区三级视频风机应能自行启动。

(4) In a mechanical smoke exhaust system, when any smoke outlet or smoke exhaust valve is opened, the smoke exhaust fan should be able to start automatically.

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