Concrete flat roof solar mounting is a solar structural system for fixing and supporting photovoltaic modules, which is widely used on flat roofs of commercial and public buildings. This type of racking system usually uses precast concrete foundations to minimize on-site construction processes and does not damage the structure of the original building.

During the design and installation process, several factors need to be considered to ensure the stability and safety of the system. First, the inclination angle of the bracket can be considered according to the roof orientation, installed capacity, bracket height, safety and economy, and usually should not exceed 30°. Secondly, the bracket foundation can be in the form of cast-in-place concrete or precast concrete, and the appropriate construction method is selected according to the specific needs.

During the construction process, the concrete curing of the bracket foundation should reach 70% strength, and the exposed metal pre-embedded parts need to be anticorrosive treatment. In addition, the bracket should be installed without damage and deformation, installed straight, without obvious misalignment, offset and skew. In order to ensure the stability and safety of the bracket, the bracket should be fixed firmly with the foundation or connecting parts, and the flat spacer and elastic spacer supporting the fastening bolts should be complete.

In terms of material selection, the bracket is usually made of steel or aluminum alloy, which features high strength and wind resistance. For example, certain systems are made of carbon steel with a surface treatment of hot-dipped galvanized or galvanized aluminum-magnesium to improve corrosion resistance. In addition, the design life of the brackets is generally 25 years, and they are able to withstand certain snow load forces and wind forces.

In conclusion, the design and installation of PV racking for concrete flat roofs need to take into account factors such as geographic environment, climatic conditions, structural safety of the building as well as economy in order to ensure the long-term stable operation and safety of the system.