Installing a permanent outdoor trash bin requires a solid foundation to prevent tipping, animal interference, and weather-related damage. The most critical factor is the depth of the concrete base, which primarily depends on your local climate and soil conditions.
For most standard-sized bins (around 40-60 gallons), a concrete base with a depth of 4 to 6 inches (10 to 15 cm) is generally sufficient in regions with stable, non-freezing temperatures. However, if you live in an area that experiences frost, the base must extend below the frost line. This prevents the ground from heaving during freeze-thaw cycles, which can crack the concrete and destabilize the bin. You can typically find your local frost line depth by consulting your city's building department.
Here are the key steps and considerations:
1. Excavate the Area: Dig a hole that is wider and longer than your bin's footprint. The depth should be your desired base depth plus an additional 4-6 inches for a compacted gravel sub-base.
2. Prepare the Sub-Base: Add and compact a layer of gravel. This improves drainage and provides a stable platform for the concrete.
3. Pour the Concrete: Pour the concrete slab, ensuring it is level. For added strength, especially for heavy-duty commercial bins, consider reinforcing the concrete with wire mesh.
4. Allow for Curing: Let the concrete cure completely for at least 48-72 hours before placing the bin on it.
A properly installed base, set at the correct depth for your environment, will ensure your trash bin remains secure, level, and functional for years to come.