Design and Construction Specifications for Solar Mounting Systems

     Thick enough is required for installing the system (Profiles).The wall thickness measured for aluminum alloy tracks and the like (aluminum alloy tracks and the like) is greater than or equal to 2.The thickness of the steel profile should not be less than 1.0 millimeters.8 millimeters.When transporting or installing, if the material is too thin, it will be easily deformed by impact, and it will easily undergo local bending when bearing force for a long time.The thickness of the thin pads used on some low-cost products is less than one millimeter.The thickness is 5 millimeters; it looks light, but it will bend and twist after long-term use, which will affect the flatness of the solar panel and may even break the glass.

     The number of bolts used for the bolted connection at each node is at least two; do not apply the load to just one single bolt.Bolt diameter has to be more than or equal to 8 millimeters.The overlapping part of the connecting plates must be at least 3 times the bolt diameter. For example, for an 8-millimeter bolt, the overlapping part should be greater than or equal to 24 millimeters.The purpose of these provisions is to prevent rotation or sliding at the connection points, the goal of these provisions is to stop rotation or sliding at the connection points.One single bolt is used for connection. If the bolt becomes loose, the connection will fail. Two bolts support each other.Also, the bolt holes need to have a certain distance from the panel edge, they cannot be too close. At least 1, this 1 is approximately 1 times a certain unit length, such as the bolt diameter, which is determined based on the context.5 times the bolt diameter, used to prevent edge tearing of the plate under load (5 times bolt diameter to prevent edge tearing of the plate under load).

     The connection between the column base and the foundation has to bear all the loads.If embedded bolts are used for connection, the embedded depth of the bolts in concrete must not be less than 10 times the diameter of the bolts.12mm bolts need to be embedded to a depth of at least 120mm.The position deviation of the embedded bolts shall not exceed five millimeters.Use the direct pouring method (that is, insert the column into the foundation concrete), the embedded length of the column must be greater than or equal to 1/6 of the column height, not less than that, and the minimum embedded depth is greater than or equal to 300 millimeters.The embedded part's surface needs to be made rough or provided with welded shear rings, so that the column cannot be directly pulled out from the foundation.

     A steel rail, its length is usually between 4 meters and 6 meters.Longer audio tracks are connected using dedicated components intended for splicing.When the components are spliced, their length exceeds twice the width of the track, and at least 4 bolts are required for fixing.There are gaps between adjacent rails, the size of the gaps is 2 to 5 millimeters, the purpose is to deal with thermal expansion and contraction.The length of the track exceeds thirty meters, set an expansion joint at its middle position.There is a 10 to 20 millimeter gap at the expansion joint of the track section, and the solar panels are fixed with independent clamps.Without expansion joints, the long continuous rail may expand in summer, causing the connecting components to bend, and contract in winter, causing the bolts to loosen.

     Use stainless steel bolts, and do not allow them to make direct physical contact with ordinary carbon steel.If unavoidable, place an insulating washer between the two objects or coat them with an isolating layer.Different metals will form galvanic cells in humid environments, which will accelerate the corrosion of ordinary carbon steel.When tightening stainless steel bolts, control the torque, do not over-tighten them, otherwise the threads will seize.Use anti-seize compound within the specified torque range (it is recommended to use anti-seize compound within the specified torque range).All stainless steel fasteners shall preferably be A2-70 or A4-70. A4 is 316, which has better corrosion resistance.