Structural engineered beam question

[Roman AB]

I’m having a patio built and will have a span of 24 feet from post to post. The beam between the post will support the roof which will be a lean to roof attached to the side of my house. The cover will be wood build with joist and rafters spaced at 16” with shingle roof finished out in hardie siding. One builder says to use a 16”x3 1/2”x24 beam and the other is saying 14”x5 1/2 x 24 beam. Any builders or engineers have advice on this?

[Milkfisher]

I build a ton of patio covers but I dont use engineered beams often. That being said, Id be more inclined to use the 14x5.5" over the narrower beam.

[CabezaBlanca]

If you have a McCoys near you they can work that up and order it for you.

[Roman AB]

If you have a McCoys near you they can work that up and order it for you.

Didnt know that. Thanks.

[CabezaBlanca]

Didnt know that. Thanks.

Yes sir.

[cj7zrcool]

We would normally quote (3)ply 1-3/4"x16"x24' LVLs to carry that load/span.

[Death from Above]

Anyone that answers based of of the info you have given is guessing.
The load comes from the rafters/joist sitting on the beam. What is their span?

And 24 is too far...any glu lam or lvl on that span will sag 3plus invhes under their iwn weight. Use a steel ibeam like in metal building.

Mueller building systems should be able to size its appropriate poundage

[munchie]

I would disagree that any glu lam, parallam or any other engineered beam will sag under their own weight. They will span long distances as long as they are sized correctly. I have used hundreds of them and just about any lumber place should be able to size it for you or most beam manufacturer's have their specifications on their respective websites.

[Roman AB]

Anyone that answers based of of the info you have given is guessing.
The load comes from the rafters/joist sitting on the beam. What is their span?

And 24 is too far...any glu lam or lvl on that span will sag 3plus invhes under their iwn weight. Use a steel ibeam like in metal building.

Mueller building systems should be able to size its appropriate poundage

I spoke with Boise Cascade and they recommended a 5 1/2' x 18" for a 24 foot span. They did calculate the load of the joists and rafters and the distances of their runs was used for the recomendation.

[125Dad]

Can I ask why do you need that span?
Why not add a post are two?

[Roman AB]

Can I ask why do you need that span?
Why not add a post are two?

I just want it open all the way down.

[Death from Above]

I would disagree that any glu lam, parallam or any other engineered beam will sag under their own weight. They will span long distances as long as they are sized correctly. I have used hundreds of them and just about any lumber place should be able to size it for you or most beam manufacturer's have their specifications on their respective websites.

You would be wrong.

Every span chart has the deflection ratio on it...look it up.

I have sized thousands of beams over the years...and I stayed in a Holiday Inn Express...

Deflection=sag in my east Texan vernacular

[Death from Above]

I spoke with Boise Cascade and they recommended a 5 1/2' x 18" for a 24 foot span. They did calculate the load of the joists and rafters and the distances of their runs was used for the recomendation.

Thats a monster...If you have high ceilings should be ok, an 8' eve will ahve the beam down at head height...just something to consider...

did they tell how much deflection to expect?

[Roman AB]

Thats a monster...If you have high ceilings should be ok, an 8' eve will ahve the beam down at head height...just something to consider...

did they tell how much deflection to expect?

No the didn’t. That is definitely something I didn’t consider I’ll need to measure that once the concrete is poured.

[az2tx]

Thats a monster...If you have high ceilings should be ok, an 8' eve will ahve the beam down at head height...just something to consider...

did they tell how much deflection to expect?

Deflection would depend on camber
A cpl of other things he needs to consider,
what type of post?
What about uplift?
What is the roof pitch going to be?
Is their just going to be a ledger on the side of his house to tie into or is it a hip roof where he can sit the new rafters on the exterior wall