What are the requirements of the fire evacuation staircase design specification? What firefighting knowledge do you know?
Design requirements for fire evacuation stairs: (generally the most suitable design is based on a width of 0.3 meters and a height of 0.15 meters. It is also convenient to use, and the width and height are stipulated in the specification)
1. The number, location, and form of stairwells of stairs shall meet the requirements of convenient use and safe evacuation.
2. In addition to complying with the provisions of the fire protection code, the net width of the stair section for daily main traffic should be determined according to the characteristics of the building, generally according to the number of streams of people whose width is 0.55+(0~0.15)m per share. , and should not be less than two streams of people.
Note: 0-0.15m is the swing of the human body during the movement of the flow of people, and the upper limit value should be taken for places with a large number of people in public buildings.
3. When the ladder section changes direction, the minimum width at the platform handrail should not be less than the net width of the ladder section. When it is necessary to carry large objects, it should be widened appropriately.
4. The steps of each stair section should generally not exceed 18 steps, nor should they be less than 3 steps.
5. The clear height of the upper and lower aisles of the stair platform should not be less than 2m. The net height of the ladder section should not be less than 2.20m.
Note: The clear height of the stair section is the vertical height measured from the front edge of the step (including within 0.30m outside the front edge of the lowest and highest step) to the lower edge of the protrusion directly above.
The above are the specifications for some fire stairs. Let's share some fire protection knowledge.
1. Do not pile up sundries in the corridors and small courtyards, so as not to cause fires and block fire exits.
2. Frequently check the electrical lines, power distribution facilities, and power plugs, and replace and tighten them in time if they are found to be loose or hot.
3. When you go out, please check whether you have turned off all the power at home. The long-term heat storage of the charger may cause a fire.
4. The basic method of firefighting
Isolation method: Isolate or remove the burning place or object from the combustibles around it, and the burning will stop due to lack of combustibles. Such as: turning off the power supply, and flammable gas and liquid pipeline valves; demolishing flammable buildings adjacent to the burning objects, etc.
Suffocation method: Prevent the air from flowing into the combustion zone or dilute the air with non-combustible substances, so that the combustion substances cannot get enough oxygen and extinguish.
Cooling method: Spray the fire extinguishing agent directly onto the burning object to reduce the temperature of the burning object. Combustion stops when the temperature of the burning substance drops below the ignition point of the substance. Mainly water and carbon dioxide to cool down. This method is not suitable for an electrical fire.
Inhibition method: This method is to use fluorine and bromine chemical fire extinguishing agents (such as 1211) to spray on the flame, let the fire extinguishing agent participate in the combustion reaction, interrupt the combustion chain reaction, and achieve the purpose of fire extinguishing.
5. Understand the fire hazards of using fire, electricity, oil, and gas in the place.
6. Ability to call the police: dial 119 immediately after discovering a fire; Ability to extinguish the fire: use fire extinguishers, fire hydrants, etc., to put out initial fires after a fire occurs; Ability to escape: know escape skills, and quickly escape from the scene after a fire occurs.
