maxmojo
Active member
In a new house design, I have a garage opening of 28'. My builder (not an engineer) seems to think we'll need an I beam 18" high to hold the roof load. Anybody here span that kind of distance? What did you use?
Garage opening___beam span
- Thread starter maxmojo
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Chris705
Well-known member
Maxmojo will need much more info to answer your question. If only supporting the roof above we'd need to know the depth of the garage, assuming half the roof load would be coming down on this 28' long header. I will say 28' is a very long opening for a residential garage and would think a steel beam would most likely be required. Any way to get a sketch of this portion of your garage posted?
p_mori7
Well-known member
"garage opening" ?
does that mean you are going to have a 28' door ?
I can tell you that spanning 28' is a heck of a long way and it will need a large beam.
Asphalt shingles and snow loads are very heavy.
does that mean you are going to have a 28' door ?
I can tell you that spanning 28' is a heck of a long way and it will need a large beam.
Asphalt shingles and snow loads are very heavy.
LB-1911
ALLIANCE MEMBER
![a>](http://<a href="http://s273.photobucket.com/user/mixedmojo/media/140613garage.jpg.html" target="_blank"><img src="http://i273.photobucket.com/albums/jj219/mixedmojo/140613garage.jpg" border="0" alt=" photo 140613garage.jpg"/></a>)
p_mori7
Well-known member
yup...that's going to need a big azz beam !
KELLHAMMER
Well-known member
Definitely need more info. Building dimensions for one Does it snow in your area?
Steel is sometimes more economical than an engineered wood beam for the same span. Possibly even lighter
Steel is sometimes more economical than an engineered wood beam for the same span. Possibly even lighter
Chris705
Well-known member
Quickly calculating a 40lbs/sf snow load and a 10lbs dead load for the spans given looks to be in the neighborhood of something in the magnitude of a W16 or W14x26......I don't know exactly what snow loading is where you are but probably close to 40psf??? Would need more info on the dead loads also. Not sure that span could be done with LVL lumber or not? Sure they (GP or LP) could engineer it for you.