【 Weak current College 】 indoor hydrant settings

1, fire hydrant protection RADIUS
Fire hydrant protection RADIUS is the layout of the main fire hydrant, directly affect the fire effect. Some designers in the interior layout of the fire hydrants in engineering design, simple Cabinet equipped fire dragon belt length as fire hydrant protection RADIUS, and the actual calculation of fire protection RADIUS is quite different. Fire hydrant protection radius should be under specific conditions, layout, and fire hose length, enrich the water column length, and other factors. In particular, some public entertainment complex, since its function of special requirements, the layout is more complex, if only to fire dragon belt length as fire hydrant protection RADIUS, it is easy to produce error, so that some parts of a fire on the blank area, great design. Therefore, the protection RADIUS, hydrants shall be determined by calculation of the relevant provisions.
Fire hydrant protection radius should be fire dragon belt of laying length and enrich the water plane projection length two superimposed value, where laying length should be the fire dragon belt length according to the reduction factor reduction calculation values after the full water column projection value according to the specifications, construction of nature, specific factors determine floors high. Only then the calculated value, fire hydrant protection RADIUS to serve as a basis for layout fire hydrant spacing. Of course, except under the fire hydrant protection RADIUS values determine the spacing, the fire hydrant should be separated according to the architectural plan and channel, door stops and other concrete analysis, ensuring two full water can reach the Interior of any part.
2. set the fire hydrant
2.1 bottom arrangement of residential fire hydrant
According to the architectural design fire protection standard ", for more than six layers of bottom dwelling shall set indoor fire water, that is, you must set the fire extinguishing system. Bottom dwelling fire extinguishing system from a design point of view is relatively simple, but in how reasonably in the design of the layout of the location of the fire box, the position of the box to meet fire protection requirements of the normative and the use of, and does not cause inconvenience of households is to design the main problems encountered. Modular housing building in public places only the location of the staircase, to set the fire hydrant box locations only layers of floor platform and landing, from the use of speaking it would be located in the floor platform, but the small size of floor platform, its space walls except household door, the walls less, and electrical distribution box also located in the wall, so in this limited fire box set on the wall is very difficult: and in this wall mount with prescribed manner affect a user's access, concealed from security perspective and unsafe. Therefore, the current design will fire hydrant to landing, at landings office walls with concealed manner.
2.2 in smoke stairway decorated fire hydrant
Someone will need to set the protection site of a fire hydrant located in smoke stairway. Smoke staircase is a fire evacuation of workers, and protection of the sites linked to the use of fire doors, fire resistance, fire doors closed, for evacuation and blocked flue gas, the fire door at a gap or not. If the fire hydrant located in smoke stairway, protection establishments fire, fire hose must pass through the fire door before they can reach places of fire protection, fire doors are closed, smoke staircase will be full of smoke, losing its security and reliability. Therefore, the protection of sites of fire hydrant should be located in the protection zone, is located in smoke stairway, otherwise it would lose its fire-fighting role.
2.3 press fire hydrants, partition layout
If building a larger area of each floor, each floor plane to be divided into several fire partitions. Generally use fire shutter, Firewall Plus fire doors and other formation several fire partitions. Fires when the adjacent fire curtain falls down to the bottom, the role of the firewall, fire hose not from there through the fire door closed, you are not allowed to fire hose. Therefore, it should be noted that according to the setting of a fire hydrant, fire compartment that is not partitioned across fire hydrant (whether vertical plane partition or partitions).
3-export the settings of a fire hydrant
Double outlet fire hydrant was in recent years developed a new type of fire hydrant. In some specific areas of a building, a reasonable set of double outlet fire hydrant, both to meet the needs of the fire-fighting, and save investment.
According to China's "architectural design fire protection standard" requirements, fire hydrant fitted with two pistol of enriching the water column can be reached on any part of the Interior, in order to control and extinguish the fire in a timely manner. If the design of single export fire hydrant, to ensure that two full water can reach the room at any point, it is bound to increase fire risers and fire hydrant, and double outlet fire hydrant can provide an interface with two pistol, relatively single export fire hydrant reduces the vertical pipes and hydrants, therefore the number of settings in engineering design, some designers often use double laid fire hydrant outlet fire hydrant. However, the settings of the hydrant should also be considered in any case you can use the fire hydrant for fire, including fire hydrant was adjacent to the threat at least one fire hydrant should be capable of protection to any site that requires each hydrant of set points shall, to the adjacent fire hydrant protection RADIUS. Because the fire hydrant generally located in the building of the aisle, stairs, etc. of the channel, evacuation, if the point fire are not promptly fight, will affect the evacuation and fire, causing greater loss: If the fire hydrants in the double-export, the export-hydrant design protected places no one compartment, is the greatest fire hazard. Therefore, in the layout of the hydrant, meet at any place two compartment requirements, regardless of the fire hydrant set point protection, so the design time double outlet fire hydrant should be used with caution, especially in fire risk larger establishments generally do not use double-outlet fire hydrant. Of course, if the fire hydrant settings double outlet locations, often embodies the advantages of double outlet fire hydrant. The author considers the following two areas more suitable for settings-export hydrants: ① bottom dwelling of the underlying stores and top level loft; ② building height not exceeding 50m, and each floor area of not more than 500 square meters of ordinary Tower House.