What are the best methods to reinforce the base of large-capacity polypropylene trash cans?

Large-capacity polypropylene trash cans are essential for commercial and heavy household use, but their bases often sag or crack under constant heavy loads. Reinforcing the base significantly extends the container's lifespan and prevents structural failure. The most effective method involves installing a circular plywood platform cut to fit precisely inside the bottom of the can. Use ½-inch or thicker exterior-grade plywood sealed with waterproof paint to prevent moisture damage. For extreme heavy-duty applications, fiberglass resin reinforcement provides exceptional durability. Clean the bottom surface thoroughly, then apply multiple layers of fiberglass mat and resin, building up a ¼-inch reinforced base. Steel bracket support systems offer another reliable solution. Install L-shaped steel brackets in a cross pattern across the bottom interior, securing them with stainless steel bolts and waterproof sealant. Regular maintenance including avoiding overloading beyond capacity specifications and periodically checking for stress cracks will maintain structural integrity. For plastic weld repairs, use a polypropylene welding rod and heat gun to fuse new material into cracked areas. These reinforcement techniques can add years to your trash can's service life while preventing costly replacements.