The 7-meter foundation of street lamp refers to the supporting structure of street lamp, which is used to fix the underground part of street lamp. The design and construction of foundation is very important for the stability and safety of street lamps. The following will introduce the foundation type, design principle and construction technology in detail.

First of all, there are two main street lamp foundations: concrete foundation and reinforced concrete foundation. Concrete foundation refers to pouring concrete underground to form a solid foundation for supporting lampposts. Reinforced concrete foundation is to add steel bars to the concrete foundation to increase the strength and stability of the foundation.

Secondly, the design principles of street lamp foundation mainly include the following points. First of all, the size of the foundation should be reasonable, taking into account the height and weight of the lamp post and the bearing capacity of the underground soil. Secondly, the shape of the foundation should be stable, generally round or square, to increase the stability of the foundation. In addition, the depth of the foundation should be appropriate. Generally, it is required that the buried depth of the foundation is not less than 1 m to ensure the stability of the foundation.

Finally, the construction process of street lamp foundation mainly includes the following steps. The first is the excavation of foundation. According to the design requirements, dig a pit of suitable size on the ground to accommodate the foundation. Then pour the foundation, pour concrete or reinforced concrete into the pit, finalize the design and compact with the template to ensure the quality of the foundation. Next is the maintenance of the foundation, which generally takes a period of time to ensure the strength and stability of the foundation. Finally, the lamp post is installed, and the lamp pole is inserted into the foundation and fixed to ensure the stability and safety of the street lamp.

To sum up, the 7-meter foundation of street lamp refers to the underground part used to support the street lamp pole, and its design and construction are very important for the stability and safety of street lamp. There are two types of foundations: concrete foundation and reinforced concrete foundation. Design principles include reasonable size, stable shape and appropriate depth. The construction process includes excavation, pouring, maintenance and installation. Through scientific and reasonable design and construction, the stability and safety of street lamps can be ensured.