What are the best techniques for building a sturdy and durable outdoor deck using 6x4 wood?

To build a sturdy and durable outdoor deck using 6x4 wood, it is important to follow these techniques:

1. Use pressure-treated wood to prevent rot and decay.
2. Ensure proper spacing between boards for ventilation and drainage.
3. Use galvanized or stainless steel screws for fastening.
4. Install proper footings and support posts for stability.
5. Apply a weather-resistant sealant or stain to protect the wood from the elements.

By following these techniques, you can create a long-lasting and sturdy outdoor deck using 6x4 wood.