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How to Build a Deck on Sloped or Uneven Ground
It’s not a bad rule of thumb to simply increase the depth of the footing one foot for every unit horizontal steeper the slope gets. Between 3:1 and 2:1 slopes, a minimum of two feet deep, and between 2:1 and 1:1 slopes, no less than 3 feet deep. For slopes steeper than 45 degrees, consulting an engineer may be the best choice. Beyond this generalization, you also need to consider if the soil is unstable, loose or sandy. In these cases, the lateral stability for the footings is even worse, and a little more depth is likely necessary to assure they don’t slide down the hill.
Cutting a Concrete Pad
Learn how to use a concrete saw to cut a hole in a patio slab to install a deck footing.
Do I need to use rebar?
Our inspector discusses using steel rebar for deck footings.
Monolithic Pier
Compare the pros and cons of installing a solid concrete deck footing using a cardboard tube or engineered forms.
How to Decorate Deck Support Columns
Browse some examples of decorative deck support posts for tall decks.
How to Size a Deck Beam
Learn about how to choose the correct size beam for your deck. We discuss engineered beams and "sandwiched" style beams.
Engineered Deck Beam
Use treated engineered deck beams for long spans with fewer posts and footings. Engineered beams can be designed and specially ordered from your lumberyard.
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
Create a free account and get instant & exclusive access to all that Decks.com has to offer:
|
1,000+ How-To articles |
|
80+ Free Deck Plans |
|
Deck Planning Calculators |
|
Free & Simple Deck Design Tool |
How to Build a Deck on Sloped or Uneven Ground
It’s not a bad rule of thumb to simply increase the depth of the footing one foot for every unit horizontal steeper the slope gets. Between 3:1 and 2:1 slopes, a minimum of two feet deep, and between 2:1 and 1:1 slopes, no less than 3 feet deep. For slopes steeper than 45 degrees, consulting an engineer may be the best choice. Beyond this generalization, you also need to consider if the soil is unstable, loose or sandy. In these cases, the lateral stability for the footings is even worse, and a little more depth is likely necessary to assure they don’t slide down the hill.
Cutting a Concrete Pad
Learn how to use a concrete saw to cut a hole in a patio slab to install a deck footing.
How to Buy Concrete: Hiring a Ready-Mix Truck
Hiring a truck to deliver ready-mixed concrete for your project may make better sense than mixing it yourself. Learn how to order concrete for your deck at Decks.com.
How to Install & Build Deck Footings
Learn how to install concrete footings to properly support your deck. Watch our step-by-step foundations video.
How to Decorate Deck Support Columns
Browse some examples of decorative deck support posts for tall decks.
How to Use a Triple Deck Beam to 6x6 Post Connection
Learn how to use a post beam connector to attach a 3-2x10 beam to a support post for a deck when there isn't enough material on the post to create a notched connection.
How to Use Steel Metal Deck Support Posts and Columns
Steel deck posts with base plates can be used as an alternative to wood posts for supporting your deck.
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