2 X 6 Roof Beam

Lumber species southern pine douglas fir douglas fir larch hemlock fir spruce pine fir redwood western cedar ponderosa pine red pine.

2 x 6 roof beam.

The formula for the section modulus is beam width times beam depth squared divided by 6. A 2 by 8 beam would be sufficient. This is a pergola thing. Here we have a wood framed gable roof.

After a year in the sun and rain without support. It has been my experience to never use a beam smaller than a two ply 2 x 8. The image below shows a cross section of our simple 12 x 13 house from the joist span tables section of this tutorial. If there is are any questions about anything else then you should contact your supplier or an engineer.

My plan is to add 2x6 supports on to the top plates of the existing house wall where the 2x6 s intersect with the walls. If you do opt to use 2 4 shed rafters for your roof construction you will always use a 2 6 ridge beam even though the rafters will be 2 4. Also see assumptions for table development. Two 2 by 4 beams together would not be enough.

This post may contain affiliate links. Personally would use a much deeper joist. I will be setting 4x4 post every 6 with 2 2x6 s with 1 2 osb sandwiched between them as the form to set on top of post. No a 2x6 will probably not collapse under the weight of a few.

If i tie into a 6 12 pitch roof with 2x6 s. Beam span calculator for help simply click on the beside the section you need help with watch this tutorial video. Floor beam span tables of residential structural design we will now look at roof rafter and beam design. Let s consider a basic gable wood roof framing design.

For each application a pdf download is available. Determining whether to use 2 4 or 2 6 rafters depends entirely on your environment. Most interior beams need to include the roof load. Patio roof maximum beam rafter spans.

Refer to sfpa s publication southern pine headers beams download in publications that includes all size selection and allowable load tables. Yes a 16 foot 2x6 may look like a pretzle. Item 33789 model s206se 1 16. Loading conditions are detailed below.

This calculator matches up with 90 of the applications in the 2012 international residential code book. 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. A two 2 by 6 standard beam has actual dimensions of 1 5 by 5 5 inches which would give a section modulus of 1 5 x 5 5 x 5 5 6 7 6 which is not enough for this example. 2 in x 6 in x 16 ft spruce pine fir lumber.

Continuing on from part 3. For more information see our disclosures here. No actual roof just slats.