Porch addition..May be?
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Porch addition..May be?
Thinking about adding a 15 x 15 covered porch attached to the back of my house. Instead of using a support header in the middle of the porch, can I add a second 2 x 6 on all the trusses to absorb the snow weight? In other words, I want to use (2) 2 x 6 trusses all the way across without the use of a support header in the middle. Does this make sense or legal? advice, please.
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We will need a lot more information. Your talking about modifying trusses before you even begin. That's not a good sign. Do you have any drawings or plans you can post?
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Porch addition..May be?
Perhaps, trusses is the wrong choice of word. Rafters?
Basically, It's just a cover porch or lean-to that ties-in with the house with no walls of any kind. Each rafter will contain (2) 2 x 6 to cover the 15' span with approx 18" center to center.
I was concern if the double 2x6 can absorb the snow load without using a support beam in the middle?
Basically, It's just a cover porch or lean-to that ties-in with the house with no walls of any kind. Each rafter will contain (2) 2 x 6 to cover the 15' span with approx 18" center to center.
I was concern if the double 2x6 can absorb the snow load without using a support beam in the middle?
Last edited by ThepMi; 07-28-20 at 03:09 PM. Reason: wrong verbages
#4
How much of a snow load are you talking about ?
What location ?
Roof pitch also has a lot to do with snow load.
What location ?
Roof pitch also has a lot to do with snow load.
#5
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Search online for "rafter span table" and you will find the information you need. A 2x6 can not span that distance especially with a shallow pitch and snow load.
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Porch addition..May be?
Thank you.
Understood of the 2x6 cannot span to 15 feet distance. But what if you sisters (2) 2x6, it would be the same as a 4x6 at 15 feet. I'm wondering if that is permissible. I cannot find anything on the internet sistering (2) 2x6. That's why I'm asking.
Understood of the 2x6 cannot span to 15 feet distance. But what if you sisters (2) 2x6, it would be the same as a 4x6 at 15 feet. I'm wondering if that is permissible. I cannot find anything on the internet sistering (2) 2x6. That's why I'm asking.
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