【 Weak current college 】 building smoke partition---Power By 【 China power house network 】

First, the concept of smoke partition
To contribute to building evacuation and organized exhaust, technical measures taken. By smoke partition so that the smoke set to set space through smoke extraction facilities will flue gas flows into the outdoors. Smoke partition scope refers to the roof smoke shelves, hanging wall or smoke from the ceiling down to highlight not less than 500 mm of the beams, from floor to roof or ceiling of the space between.
Roof smoke partition is located on the roof, the smoke and heat horizontal flow obstacle of vertical separation.
Smoke hanging wall is not burning material, drop from the ceiling is not less than 500 mm, fixed or active stall cigarette facilities. Active smoke hanging wall means fire due to heat, smoke or other control devices, automatic drop down wall of smoke.
　　
Second, the role of smoke partition
A large number of information indicating that the fire casualties was mainly attributable to the harmful effects of tobacco. Fires first task is to fire on high temperature flue gas control within a certain area, and quickly discharged outside. To this end, in setting conditions must divide the smoke partition. Set smoke partition is guaranteed over a certain period of time, so that the fire on high temperature flue gas is not free, and thus be excluded, and thus enabling evacuation, control the spread of fire and the purpose of reducing fire losses.
　　　
III. principles for smoke partition settings
Set smoke partitions, if area is too large to cause the smoke affected area expanded to include adverse safety evacuation shouzaimian, and fighting; if the area is too small, not only use, which will increase the cost of project.
1. no smoke extraction facilities room (basement) and aisle, no Division of smoke partitions;
2. smoke partition should not be cross fire partitions.
3. on a special-purpose sites, such as basements, smoke fire stairs, elevators, refuge interlayer, etc., should be on a separate partition smoke partition.
4. smoke partitions generally do not cross the floor, in some cases, such as 1 layer area too small permitted including 1 above the floor for not more than 3 layers.
5. each smoke partition size for high-rise buildings and other buildings (including underground construction and civil engineering), its building area is greater than 500 square meters; when the roof (or roof) height above the 6m, are not affected by this limitation. In addition, the need to set up the aisle, smoke extraction facilities in height not exceeding 6m room should be used in smoke vertical wall, wall or roof highlights from not less than the beam Division 0.5m smoke partition, beams or vertical wall-indoor floor height should not be less than 1.8m.
　　
4. smoke partition of partition method
Smoke partition is generally based on building types and requirements vary, depending on their purpose, area, floor breakdowns:
(A) classification by purpose
For the parts of a building, according to its different uses, such as kitchen, bathroom, living room, living room and Office, etc, to more appropriate division of smoke partitions, but also more convenient. Abroad often parts of a building divided into living or office space, evacuation corridor, staircase, elevator and the front room, garage, etc. smoke partition. But according to this method of dividing smoke partition, you should be aware of for ventilation and air conditioning ducts, electrical, piping, drainage pipes, etc. through walls and floors, the application is not burning material fill compacted.
(2) classification according to size
The building press area divide it into several base smoke partitions, these partitions on each floor for smoke, generally the same, the same shape, use the same size. Different shapes of smoke partition, its area is also suitable. Each floor of the smoke partitions can use the same set of smoke control facilities. Like all smoke partitions share a set of smoke extraction device, the exhaust fan capacity should be maximum preventing smoke partition area calculation. (3) breakdown by floor
In high-rise building, ground floor and upper part of the same is often not too, such as high-rise hotel building, ground floor layout of the dining room, reception room, shops, accounting, multi-function Hall, etc., the upper part more housekeeping. Fire statistics indicate that the underlying the chance of fire, fire probability, in the upper part of the main fire. Therefore, where possible, depending on the room's different uses vertically divided according to the floor for smoke partition.
Exhaust pipe of the firewall, should be set on fire dampers and smoke and exhaust blower linkage.