How to Use Shared Load Deck Support Posts
It if often practical to use a common post and footing to support two or more beams in a deck design. This usually happens in multilevel decks where a lower deck intersects with an upper deck along a line of posts and footings. Stair landings that wrap around the frame of a deck often take advantage of sharing a corner post.
SaveAlthough this can be a great technique for reducing your quantity of footings for your project you must be careful to consider the types of compound forces you will be exerting on the post. A beam attached to the side of a post will be pulling out and down away from the post. You must maintain a minimum 1-1/2" beam bearing ontop of a post. In order to satisfy this requirement you will need to create a notch in the lower section of the post. Installing a cleat along the post below the beam can provide added stability and increased support.
Consider how large amounts of load applied from the side coupled with the downward force of the higher beam can overload the capacity for the post and don’t forget to adjust your footing size to accommodate the additional loading. Be sure to use the proper type and quantity of fasteners to prevent them from shearing off under the load. Using long ½” carriage bolts will work well in this application. Check with your building inspector.
How to Decorate Deck Support Columns
Browse some examples of decorative deck support posts for tall decks.
Determining Deck Beam Height
Learn how to measure in order to set your posts to properly position your deck beam to the correct height. We recommend sloping your deck to shed water away from the house.
How To Build an Octagon Deck
Learn how to build an octagon-shaped deck. Octagon decks can be used as the floor for a gazebo roof.
How to Install Decking Over Existing Concrete Slab, Patio, or Porch
Discover the best techniques to build a deck over concrete, ensuring proper drainage and stability, while creating a beautiful outdoor space.
6 Best Alternatives to Wooden Decking
While wood decking was previously considered the standard material for building a deck, that’s changed. Homeowners have been exploring and embracing different types of materials, and the availability of alternative decking materials has grown significantly.
Best Hidden Deck Fasteners
Hidden fasteners create a clean deck surface and can be used with composite, wood and other materials. Learn about hidden deck fasteners at Decks.com.
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.
How to Create Strong Post-to-Beam Connections
Learn how to create a positive structural connection for your post to beam connections. Use lag bolts, through bolts with washers, support cleats and hardware connectors.
Building Above Ground Pool Decks
Add that finishing touch to your above-ground pool with a customized pool deck. Learn the essential steps from planning and permitting to installation and maintenance. Discover tips on choosing materials, ensuring safety, and deciding between DIY and professional help for a seamless and stylish poolside experience.
What to Consider When Building A Wrap-Around Deck
Looking to add a wrap-around deck to your home but unsure of what the process involves? Check out this guide to learn more about top considerations when building a wrap-around deck.
Hidden Deck Fastening: 3 Ways to Fasten Your Composite Deck Boards
Hidden deck fasteners are the ideal option for DIY builders looking to hide their hardware, without sacrificing the stability of their deck. From nearly invisible deck plugs to color-matched deck screws, knowing how to choose and install these hidden fasteners is an easy way to level-up your deck project.
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