2x6 span question

[Bretny]

i thought boards had crowns laying flat. whats the crown sitting upright?

If you have to ask this are you really up to the task? I hope your truck isn't to important to you.

There's a lot more to carport spans than snow load. Wind and rain are some others.

Next you should ask how to make vertical post to horizontal beam connection and beam size.

 

[Marctrees]

Give a new guy a break.

Get off his back w this totally non constructful comment.

Maybe you just got up on the wrong side of the bed, but a Better man would delete it...Or at least change your approach attitude.

Marc

 

[Kevin54]

Here is one the neighbor and I built. We used 2x8's and 6x6 post.

 

[Kevin54]

I don't have any pics of after it was roofed. And we still had (2) 2x8's to put on the overhang on each side.

 

[mike93lx]

I don't have any pics of after it was roofed. And we still had (2) 2x8's to put on the overhang on each side.

Ohio and Georgia are very different

 

[DFB]

Looking thru span tables in another construction manual I have, using a single 2x6 as a "girder" (or horizontal carrying beam) looks to be rated for about 750 lb load at a 10ft span. Double it up and in general basically double the carrying load value

4 of them be way overkill

Face fastening support beams to posts may not be approved many places

 

[Koldham]

ya im not worried about wind. all the trees soak up the fast wind. its also going to be backed up to a fence that looks to be about 7 ft tall. from what iv learned here and a few other places, the 2x6 sandwiching a 6x6 posts should be plenty. do not toe nail and simpson strong tie the **** out of every joint with screws and outdoor lag bolts. thanks yall. will try to remember to post pics when the thing goes up.

 

[Marctrees]

"4 of them be way overkill "

He is using a total of four, on TWO sides of the square.

Two for each beam "assembly"

Marc

 

[DFB]

"4 of them be way overkill "

He is using a total of four, on TWO sides of the square.

Two for each beam "assembly"

Marc

Was talking a built up beam Mark

Just using two pieces of 2x6 bolted up one on either side of post isn't the same thing at all

 

[Marctrees]

No, it is NOT the same agreed... But it is somewhat better than a single, and arguably sufficient for THIS job.

Marc

 

[Koldham]

the purlins or whatever will be sitting on top on the 2x6 beams. what does it matter if there is a 5.5 in gap between the two. i dont understand how a gap lessens the load it can carry. the purlins will be adequately attached to all four beams.

 

[Marctrees]

Rafters, not Purllins.

IF you had Purlins, they would be on top of the rafters, 99% of the time laying flat.

Like a Pole Barn roof.

Marc

 

[Innovate1]

Rafters, not Purllins.

IF you had Purlins, they would be on top of the rafters, 99% of the time laying flat.

Like a Pole Barn roof.

Marc

Not your main point but many purlins are used on edge. Maybe where you are they are usually flat but they have a lot more strength and can handle larger spans on edge. Most I have seen are on edge...

 

[mike93lx]

the purlins or whatever will be sitting on top on the 2x6 beams. what does it matter if there is a 5.5 in gap between the two. i dont understand how a gap lessens the load it can carry. the purlins will be adequately attached to all four beams.

I'm not sure I really follow what you mean, but two boards that are laminated and attached to each other will be stronger than the two individually as it reduces the amount the board will twist under load.

Instead of putting one on each side of a 6x6, you would be better to laminate them (use at least a pair of screws or nails every 16") and set them in a notch at the top of the 6x6. The notch will transfer the weight better than attaching them to the face and it will be easier to assemble without having to hold the board in place while driving fasteners.

 

[Bretny]

Face fastening support beams to posts may not be approved many places

Bingo! Face fastening a structural beam like this when you have no walls to stop racking is a terrible idea. 45* braces will help only some.

There's a lot more to building a strong structure than throwing up some 2x6 with deck screws. Making it not have any walls makes things harder. You have nothing to stop racking.

 

[Bretny]

Give a new guy a break.

Get off his back w this totally non constructful comment.

Maybe you just got up on the wrong side of the bed, but a Better man would delete it...Or at least change your approach attitude.

Marc

Maybe you should read my post again or are 3in deck screws good enough for attaching a 2x6 to a 6x6.

 

[Cougar]

Looks like you're building a loafing shed with out the walls.
Can go to to menards.com see how they design it.
Looks like what Kevin posted.