How to Create Strong Post-to-Beam Connections
Maximize the surface area of the beam resting on top of the post to take advantage of the compression strength supplied by the perpendicular grain of the support post. IRC Code requires a minimum of 1-1/2" direct bearing for beams over support posts. If you need to expand the bearing for a beam, especially in situations where you have two or more beams intersecting above one post you may want to install a cleat down the side of the post. To install a cleat you will lay a short section of 2x6 flat against one side of the 6x6 support post flush with the top of the post and even with the bottom of the beam. Use a series of lag bolts to secure the cleat down the side of the post. This technique is used to expand the contact bearing at the top of the post. Make sure the cleat is long enough and has enough bolts to pick up its share of the load, 3 feet is usually long enough.
The best post beam connection involves notching a cavity into the tops of support posts to set the beams using carriage bolt fasteners (see below). Post beam connector hardware are especially useful in situations where notching a post is not practical such as at the intersection of an angled corner of the deck. To optimize performance always use the correct type and quantity of fasteners per the installation instructions. A Beam is allowed to continue over the top of a post by a maximum of one foot at the ends of a deck frame. Setting a post in from the corners of a deck can provide a nice visual balance to the frame. It can also slightly reduce the distance in between interior posts. Never apply two boards on either side of a post as a beam in the "sandwich beam" style. The strength of a multi-ply beam is created by its rigid connection to one another.
How to Decorate Deck Support Columns
Browse some examples of decorative deck support posts for tall decks.
How to Build a Multi-Level Deck
Multi-level decks are very popular. Learn how to build a deck that steps up or down using shared posts and footing connections.
Building Your Deck For A Hot Tub
Learn how to build a deck to properly support a hot tub or spa. Hot tubs are very heavy. Never place a hot tub on a deck that wasn't designed for the additional load.
Decking Patterns
Installing your decking at a 45-degree angle is a popular style for decks. This can be done to reduce decking seams or just for appearance.
How to Demolish & Remove a Deck
At some point, it might become necessary to remove an old deck, due to age or condition. Learn more about what's involved in a deck demolition and removal project.
Building an Outdoor Space with James DeSantis
Composite decking can not be placed directly on concrete. But a substructure can solve for this. Explore this deck project with James DeSantis
More Helpful Resources
Explore Articles by Topic
Footings
Information related to installing frost footings for decks
Framing
Learn structural framing methods
Decking
Learn about wood and composite decking materials
Stairs
An in-depth look at the complex issue of how to build stairs
Railings
How to install guardrails and handrails to meet IRC code
Features
An overview on water drainage, benches, planters and lights
Design
The basics of deck design
Planning
Learn about permits and working with contractors
Porches & Patios
Build a covered deck to enjoy all seasons
Ledger
Proper attachment techniques
Care
Maintain your deck to maintain your investment
Materials
An overview on water drainage, benches, planters and lights
Why is Joist Protection so Important for Your Deck?
If you’ve ever seen a piece of wood left out in the weather for any period of time, you know what happens: decay. Whether through wet rot, insect damage, or mildew, the fibers begin to break down.
Joist Tape: What Is It and Do I Need It?
Dive into the benefits of joist tape and why you need it for your deck build.
Building a Round or Curved Deck
Learn how to build a curved deck using standard wood-framing materials. Composite decking material is more flexible for curved decks than wood.
Building an Outdoor Space with James DeSantis
Composite decking can not be placed directly on concrete. But a substructure can solve for this. Explore this deck project with James DeSantis
Best Time to Build a Deck
People often wonder when the best time to build a deck is. Learn why building a deck in winter or fall might be your best bet.
How to Install Composite Decking
Learn about how to install composite decking. Topics include expansion and contraction issues and hidden fastener systems.
Explore Articles by Topic
Footings
Information related to installing frost footings for decks
Framing
Learn structural framing methods
Decking
Learn about wood and composite decking materials
Stairs
An in-depth look at the complex issue of how to build stairs
Railings
How to install guardrails and handrails to meet IRC code
Features
An overview on water drainage, benches, planters and lights
Design
The basics of deck design
Planning
Learn about permits and working with contractors
Porches & Patios
Build a covered deck to enjoy all seasons
Ledger
Proper attachment techniques
Care
Maintain your deck to maintain your investment
Materials
An overview on water drainage, benches, planters and lights