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Garage - Rafters Upgrade

 
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Old 10-02-2010, 05:39 PM   #1
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Garage - Rafters Upgrade


I had a customer I did a project for ask me about her garage. You can see in the pictures and from the measurements most of the details. It has 2 x 6 - 24OC Rafters with no collar ties. One side is bearing on an exterior wall, one side is lag screwed into the Roof Trusses. She wants to make it walkable with more storage and a attic ladder. Two engineers told her its not possible because there is not bearing wall/support on both sides. Can't be done. I am thinking they are wrong but do they know something I don't. Any ideas how you would do it. I have a few idears but engineers are smarter than the rest of us.
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Old 10-02-2010, 05:47 PM   #2
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Re: Garage - Rafters Upgrade


Possible? Yes. Economically feasible? Probably not. That roof in my opinion is engineered to the minimum already, without any added loads.

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Old 10-02-2010, 05:53 PM   #3
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Re: Garage - Rafters Upgrade


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Old 10-02-2010, 06:08 PM   #4
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Re: Garage - Rafters Upgrade


Quote:
Originally Posted by festerized View Post
That was my initial suggestion, she wants a plank ceiling to the garage so she didn't like the idea at first. I told her we could box it out and false box to add symmetry.

Oh I forgot the depth the other direction is 25' Currently the Rafters up there are 20'4" which is an odd size.
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Old 10-02-2010, 06:13 PM   #5
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Re: Garage - Rafters Upgrade


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Originally Posted by Keeyter View Post
That was my initial suggestion, she wants a plank ceiling to the garage so she didn't like the idea at first. I told her we could box it out and false box to add symmetry.

Oh I forgot the depth the other direction is 25' Currently the Rafters up there are 20'4" which is an odd size.
Why is that an odd size?
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Old 10-02-2010, 06:14 PM   #6
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Re: Garage - Rafters Upgrade


It can be done but you have to remove & replace the rafters.
The engineer will probably increase rafter size, spacing & pitch, not to mention I would do a post & beam ridge like this one
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Old 10-02-2010, 06:20 PM   #7
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Re: Garage - Rafters Upgrade


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Why is that an odd size?
Cost effective buying larger 2 x's for the extra couple inches.
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Old 10-02-2010, 06:34 PM   #8
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Re: Garage - Rafters Upgrade


The alternative is rip the whole thing down and start over.
If it was my project I would use 1 x 11 7/8 micro lambs for rafters, 3 x 14 post & beam ridge and install liners like these under each rafter/collar tie connection.
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Old 10-02-2010, 06:36 PM   #9
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Re: Garage - Rafters Upgrade


FYI I posted the wrong pic, but the concept is the same. On a steeper pitch you can install liners under each collar tie
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Old 10-02-2010, 06:37 PM   #10
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Re: Garage - Rafters Upgrade


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The alternative is rip the whole thing down and start over.
If it was my project I would use 1 x 11 7/8 micro lambs for rafters, 3 x 14 post & beam ridge and install liners like these under each rafter/collar tie connection.
Which also means replacing the garage door header as well. If I am going that far,I might look into attic trusses. Like I said before, anything can be done with unlimited funds, but I bet that's not the case here.
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Old 10-02-2010, 06:51 PM   #11
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Re: Garage - Rafters Upgrade


Quote:
Originally Posted by festerized View Post
The alternative is rip the whole thing down and start over.
If it was my project I would use 1 x 11 7/8 micro lambs for rafters, 3 x 14 post & beam ridge and install liners like these under each rafter/collar tie connection.
Your saying just leave it, add the liners, which I am assuming is the structural equivalent to sistering. I was intending to use 14" Lams. The Roof is already 16OC but not what is gonna be the ceiling/attic floor. They "wanted" to be able to throw patio furniture and grill and such up there.
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Old 10-02-2010, 06:54 PM   #12
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Re: Garage - Rafters Upgrade


No,
Im saying remove rafters and start over. But this time ad liners. It still has to be engineered.
As Warren suggested it would be cost effective to use trusses
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Old 10-02-2010, 07:02 PM   #13
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Re: Garage - Rafters Upgrade


Quote:
Originally Posted by festerized View Post
No,
Im saying remove rafters and start over. But this time ad liners. It still has to be engineered.
As Warren suggested it would be cost effective to use trusses
Yet another reason for me to stay away from structural jobs and stick to my interior finish work. I knew it wasn't gonna be a quick, easy, or cheap fix, but i was hoping to get by with a beam to transfer the load.
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Old 10-02-2010, 07:09 PM   #14
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Re: Garage - Rafters Upgrade


In the end its worth it
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Old 10-02-2010, 07:20 PM   #15
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Re: Garage - Rafters Upgrade


We recently did a job in which we almost totally re did a detached garage. The slab was good, the door was good, but beyond that not much else. The rear wall had settled and was also short like in the posters pic, the side walls were wavy. We sistered studs to make all the walls the same height, pulled off all the siding and roofing, and installed new trusses. We were able to leave the door on during the whole process. He probably spent almost as much as for a new garage, but he had no choice other than to tear it all down.

These are the before pics. Sadly I have no after pics but it did turn out nice.
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Old 10-02-2010, 09:15 PM   #16
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Re: Garage - Rafters Upgrade


Thanks for your input gents! I do appreciate it, the customer may not like the outcome - but hey. Thanks Again
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Old 10-12-2010, 10:37 PM   #17
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Re: Garage - Rafters Upgrade


Engineer okay'd the current roof with three 25' Micros, Left-Center-Right. I think that may be overkill, but hey now i can frame it with 2 x 4's instead of 12's
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Old 12-07-2010, 10:06 PM   #18
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Re: Garage - Rafters Upgrade


Don't let the lifts fool you, I threw this bad boy on my shoulder
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Old 12-07-2010, 10:14 PM   #19
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Re: Garage - Rafters Upgrade


Sprayed texture, Painted, Epoxy on Floor, and still to come, TV's Cabients, Work Bench



Its a garage by the way.
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