Squaring the Deck Frame
Once the perimeter boards are in place, you can “square” the deck using two tape measures. This will only work if the form you are testing has symmetrical geometry. In the case of a square or a rectangle, you will measure diagonally from corner-to-corner on both sides. These measurements should be equal. In the case of an octagon, you will need to select two distances from opposite sides of the polygon.
As the joists are added, they should not only add strength and rigidity, but should also, in effect, square your deck if they are cut to the appropriate lengths. Obviously, the more square the frame, the better. Slight tolerances can be adjusted before the joists are installed to prevent exaggeration. Compare the opposite lengths of the perimeter of squares and rectangle forms - these lengths should be the same. Using a square and a 4’ level will also help verify that your deck form is level. You can also use the 3-4-5 rule to verify right angles.
How to Decorate Deck Support Columns
Browse some examples of decorative deck support posts for tall decks.
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.
How to Attach Deck Post Bases to Concrete Footers
Follow our step-by-step instructions on how to install a support post to a concrete deck footing using a post base connector and anchor.
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.
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.
Picture Frame Decking
Install a picture frame or perimeter board to finish the edge of your deck with style.
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
Squaring the Deck Frame
Once the perimeter boards are in place, you can “square” the deck using two tape measures. This will only work if the form you are testing has symmetrical geometry. In the case of a square or a rectangle, you will measure diagonally from corner-to-corner on both sides. These measurements should be equal. In the case of an octagon, you will need to select two distances from opposite sides of the polygon.
As the joists are added, they should not only add strength and rigidity, but should also, in effect, square your deck if they are cut to the appropriate lengths. Obviously, the more square the frame, the better. Slight tolerances can be adjusted before the joists are installed to prevent exaggeration. Compare the opposite lengths of the perimeter of squares and rectangle forms - these lengths should be the same. Using a square and a 4’ level will also help verify that your deck form is level. You can also use the 3-4-5 rule to verify right angles.
How to Decorate Deck Support Columns
Browse some examples of decorative deck support posts for tall decks.
How to Brace a Swaying Deck
Learn how to install a diagonal brace on your deck frame to prevent racking. Check out our detailed image.
How to Decorate Deck Support Columns
Browse some examples of decorative deck support posts for tall decks.
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.
Introduction to Decking
Spacing between deck boards provides several critical functions, such as drainage & drying. Learn how to space and stagger deck boards at Decks.com.
Best Hidden Fasteners for Decking
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.
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