20/07/2025
This image is a detailed diagram illustrating the construction of a wooden deck or similar raised platform, focusing specifically on the structural connection between the wooden frame and its foundation.
Here's a detailed breakdown of the components and their function:
1. Wooden Superstructure (Top Section):
* Outer Joist: This is one of the horizontal framing members that supports the deck boards (not fully shown, but implied as the flat wooden surface at the very top). It runs perpendicular to the rim joist/beam and is typically nailed or screwed into it. The diagram shows it at the very edge of the platform.
* Rim Joist / Beam: This is a substantial horizontal wooden member that runs along the perimeter of the deck frame. It provides lateral stability and helps support the ends of the outer joists. In this diagram, it's shown directly connected to the 6x6 post.
* Wood Planking (Decking): Although not explicitly labeled, the light-colored, flat wooden surface at the very top represents the decking planks that would form the walking surface of the deck. These would typically be fastened to the joists.
2. Vertical Support:
* 6x6 Post: This is a robust vertical wooden member (6 inches by 6 inches in cross-section) that acts as the primary support for the wooden superstructure, transferring the weight of the deck and its contents down to the foundation. It's shown firmly attached to both the rim joist/beam and the post base.
3. Connection to Foundation:
* 6x6 Post Base: This is a metal connector (often galvanized steel for corrosion resistance) that securely fastens the bottom of the 6x6 post to the concrete footing. It helps prevent the post from shifting, lifting, or rotting due to direct contact with the concrete, and also allows for fastening to the concrete (e.g., with anchor bolts). The diagram shows it embracing the sides of the post and having a flat base.
4. Foundation:
* Concrete Footing: This is a solid block of concrete that rests directly on the ground (or below the frost line, depending on local building codes). Its purpose is to distribute the weight from the post over a larger area of soil, preventing settling and providing a stable, durable base for the entire structure.
* Dimensions: The diagram explicitly labels the dimensions of the concrete footing as 16 inches by 16 inches (indicating a square base) and 7 inches in height. These dimensions are critical for ensuring adequate support and stability for the deck.
Overall Impression and Purpose:
The image is a clear, labeled illustration often used in carpentry, construction, or DIY guides to explain the proper way to build a sturdy and code-compliant deck or similar structure. It highlights key structural components and their interconnections, emphasizing the importance of a robust foundation and proper fastening for long-term stability and safety.
