Attaching stair stringers securely is the first critical step in building outdoor stairs. One common method for securing the top of the stringers involves connecting them directly to a support board and an underlying post.
Attaching Stringers to a Support Board and Post
To attach the top of an outdoor stair stringer using a support board and a 4x4 post, you can follow this specific method:
- Position the Stringer: Start by placing an outside stringer into position on either side of where your stairs will be.
- Align with Support Board: Line up the top edge of the stringer so that it is flush with the top of the support board. This support board is typically part of the deck frame or landing structure.
- Center on Post: Ensure the stringer is also centered in the middle of the 4x4 post that supports the support board or landing corner.
- Secure in Place: Once the stringer is accurately aligned with both the support board and centered on the post, nail it into place using appropriate fasteners suitable for outdoor construction.
This technique provides a solid attachment point at the top of the stair stringer, transferring the stair load effectively to the main support structure.
Important Tips for Attachment
- Always use fasteners (like nails or screws) that are rated for outdoor use to prevent rust and corrosion, such as galvanized or stainless steel options.
- Ensure the support board and post are structurally sound and properly anchored before attaching the stringers.
- Double-check your measurements and levels before permanently fastening the stringers to ensure your stairs will be straight and plumb.
This method focuses on the top attachment point of the stringer, securing it firmly to the existing structure using a combination of the support board and a central post for stability.
