Influence of variation of purlin spacing on bending resistance of solar panels

If we take a square sun slab (even length and width) that is supported by a steel frame on both sides and apply some type of load, this will cause the sun slab to flex. Now let's keep these same connection parameters and increase the length of the paper, then apply the load to get the same deflection as before. We have found that until a certain asymptotic plate length, the load required to achieve the same deflection will gradually decrease. Once this asymptotic length is exceeded, there is no need to change the load level to reach the original deflection level. Therefore, we can conclude that when the length of a certain sun slab is exceeded, the stringer supporting the sheet along its width does not contribute to the bending resistance of the sheet and is therefore unnecessary. In these cases, we can say that these sun panels are executed as if they were connected to the structure in an edge/edge configuration.