What is the distance between two street lamps?
1. Street lamp spacing is determined according to the nature of the road. Generally speaking, the distance between street lamps on urban roads is between 25m and 50m.
2. If it is a small street lamp such as a landscape lamp or a courtyard lamp. If the light source is not very bright, the distance can be slightly shortened, and the distance can be about 20 meters.
3. Generally speaking, the street lamp spacing is related to the height of the lamp pole and the wattage of the lamp holder. 60W LED lamp holder, 6m rod, 15- 18m interval; The 8-meter pole spacing is 20-24 meters, and the 12 meter pole spacing is 32-36 meters.
Second, the connection method of street lamp and cable between street lamps
Generally speaking, link cables are built according to drawings. If there is no construction drawing, the general practice is as follows:
1, a cable, build a manual well at the position of the light pole, connect it with a T-shape, and connect the conductor to the safe lead-in end in the light pole.
2. The cable enters the lamp post from the threading hole of the foundation, cut off two or more wires needed, press the wires with the same color with the connecting nose respectively, and then connect the safety inlet end.
The construction adopts the following procedures: fixing the lamp position, digging trenches, burying pipes, pouring street lamps, laying cables, testing the insulation of street lamps, installing electrical equipment, testing and self-checking, and final acceptance.
Connecting cables directly to street lamps requires copper connectors. Generally speaking, incoming cables are all three-phase four-wire systems. After the cable is cut, it is connected to the copper connector of the corresponding specification, and the copper connector is connected to the terminal board. Select a phase zero line under the terminal board to connect with the leakage protector or open circuit, and then lead it to the street lamp. It's best to follow the street lamp all the time, which will lead to breakpoints. First, the operating cost increases, and it is necessary to be an intermediate head; Second, the maintenance cost increases.
Third, how to calculate the street lamp foundation?
The basic size of street lamps is generally determined by the height of street lamps, and the length and width are about 8% of the height of street lamps, which can be adjusted according to the actual situation. The foundation shall be buried below the surface with a depth of not less than 0.5m (except rock foundation); Generally, the top surface of foundation should be at least 0. 1m lower than the design ground.
For high-rise buildings located on the ground, in order to meet the stability requirements, the buried depth of the foundation should be appropriately increased with the height of the building. In the seismic fortification area, the buried depth of raft and box foundation should not be less than115 of the building height; The buried depth of raft or pile box foundation (excluding pile length) should not be less than118 of the building height.
For high-rise buildings located on rock foundation, the buried depth of foundation should meet the anti-sliding requirements. Towering structures such as chimneys and water towers should meet the requirements of overturning stability.