Post Spacing For Deck Roof

Once you decide the distance measure from the house for the first row of boards.

Post spacing for deck roof.

When supporting joists that span 12 feet with no overhang beyond the beam a double ply beam can span in feet a value equal to its depth in inches. An expert guide on the best posts and beams for your patio roof projects this article covers post column and beam types as well as the best materials for patio posts. Refer to the deck beam span table below to assist in determining the maximum span of a given beam between posts. Post spacing is going to depend on your design local building codes the size and length of your beams and the size of your posts.

An essential part of planning a patio roof or gazebo project is determining the number size and spacing of rafters beams and posts according to the loads they will carry. Home building a deck deck beam. The main structural members of patio and deck overheads are posts or columns and beams which run from post to post or from post to ledger. While a 16 foot by 16 foot backyard deck for recreational purposes such as an outdoor kitchen and general lounging may only require deck posts spaced every 7 feet a larger deck may require that the spacing be narrowed down to within 5 feet.

We will also show you how to decide the number and spacing of your footings. This generally yields a maximum tributary area of about 70 square feet. For taller decks with 2x10 framing i might question 4x4 posts. Post spacing should be even.

For a deck framed from 2x10s i d assume maximum spans of about 14 feet for joists and 10 feet for beams. Dimensional lumber deck beam span chart the numbers in gray indicate the distance between the support posts. A double 2x12 beam can span 12 feet. A 2 2x10 can span 10 feet and so on.

A redwood 4x6 beam should span no more than 6 between supporting posts. Obviously the larger the beam the greater the distance it can span between posts. I wouldn t blink at the use of 4x4 posts up to 8 feet in length. A 4 by 10 can usually span up to 12 feet between posts.

If you move up to 4 by 8 you re usually allowed to span up to 10 feet between posts. In general the maximum span for a 4 by 6 beam is 6 feet between 4 by 4 posts. It provides more stability for larger decks the ability to hold a heavier load and more room for notching. For more information see our disclosures here.

The smallest beams for patio covers are typically 4 by 6. Typical post size is a pressure treated 4 4. The size of the deck directly affects the spacing of the support posts. Some of our articles focus on the various types of accepted footings that are used by professional deck builders.