An Adjustable Plastic Pedestal can support a certain amount of weight before it starts to collapse. According to the specifications provided by Elevated Deck Systems, their JQ-T1 Adjustable Pedestal supports a weight bearing capacity of 3306 lbf (1500 kg) per pedestal. This means that each individual pedestal can support approximately 3306 pounds of weight before it starts to collapse under the strain.
However, the actual weight that a pedestal can support without collapsing can depend on several factors, including the distribution of the weight (whether it's evenly distributed or concentrated in one area), the condition of the pedestal (whether it's been properly installed and maintained), and the environmental conditions (such as temperature and humidity).
It's important to remember that exceeding the rated weight bearing capacity of a pedestal can lead to structural failure and potential safety hazards. Therefore, it's always recommended to choose a pedestal that can comfortably support the weight of the objects you plan to place on it.