The length, width, and height of the fire truck is a decisive factor affecting the traffic capacity of the fire truck lane. Generally, the length of fire trucks is greater than or close to 10m, the height is nearly 4m, and the width is nearly 2.5m. Article 6.0.2 of the “Building Regulations” and Article 4.3.4 of the “High Regulations” stipulates that the clear height and width of the fire lane passing through the building should not be less than 4m, which is in accordance with the overall dimensions of various fire fighting vehicles used in China. And sure. Taking into account that the speed of fire trucks is generally fast, a certain safety factor should be ensured in the width when passing through the building, so that the vehicles can pass quickly, reach the fire scene promptly, and enter the battle smoothly.
The fire lanes should be well set up, if the road load is too small, the pipelines under the road are buried deep and shallow, and the ditches are light-weight cover plates, etc., they cannot withstand the passage of large fire trucks. In addition, it can be seen from the above table that due to the large body length and a minimum turning diameter of the large fire truck, the return yard of the fire lane is set to 12×12m, which is obviously impassable, so a larger area of the return yard is required. In order to meet the use requirements, this return yard should be determined according to the actual large-scale fire trucks equipped locally.
2. Requirements for setting up fire lanes in built-up areas
Built-up areas, especially old urban areas, due to historical reasons, are always troubled in poor traffic conditions, and insufficient water supply for fire fighting. Small factories and warehouses are mixed with densely flammable buildings area, which are in conflict with residential houses. The old areas of small towns, which are often prosperous commercial districts, are regarded as "golden areas". Residents set up shops and stalls, the roads are occupied, temporary buildings and stalls are adjacent, and the passages are narrow. In the event of a fire, it is easy to form a fire camp. Built-up areas generally have fire lanes, and the fire lanes should always be kept unblocked. Any unit or individual is prohibited from occupying the fire lanes to build houses, stack objects, or set up stalls. The existing dense urban areas with flammable buildings should be gradually transformed in accordance with the overall urban planning and can be transformed in contiguous areas if conditions permit. The fire lane is generally not allowed to park other vehicles, and residents should be discouraged from building illegal buildings and stacking objects.
