Attaching Post To Deck Frame

Although this joint may not get the respect it deserves it is a critical load path connection that needs to keep the post and beam aligned while properly transferring deck loads to the footing.

Attaching post to deck frame.

For details on creating a post layout see how to build a deck. Remember to follow local code for deck posts. When this system of connections is made properly loads are transferred throughout the deck s frame and into the ground and or the adjacent structure to which the deck is connected. They must be strong.

The most under appreciated connection on a deck frame is probably the one between a post and the beam it supports. It s easy to connect deck railing posts to the floor joists of the deck. You ll need the post layout marked before you begin. Here we show posts for a 36 inch tall railing which is common.

There are several methods for setting posts. Deck railing posts are the foundation of a deck railing system. Cut the post to the desired height of the railing the width of the framing you will attach it to and the thickness of the decking minus the thickness of the top cap if there will be one. A system of key connections throughout the deck framing also known as a continuous load path is essential to building a safe code compliant deck.

Many professional deck builders prefer to secure posts to concrete piers with galvanized metal connectors that hold the end of the post above the concrete base and the ground to prevent rot. Don t lag bolt a deck railing post to the outer band board that s nailed to the ends of the floor joists. One way is to pour concrete in the post hole set the post on the concrete and backfill with gravel. A secure method of attaching railing posts to a deck is to notch the post at the bottom so it fit snugly in the space between the two outer floor joists.

I decided to make this instructable because when i repair or rebuild a deck the railing posts are by far the most common place where previous builders have done things improperly oftentimes so poorly that the railing would present a serious safety hazard if people were to lean.