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Old 04-13-2012, 05:49 PM   #1
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Attaching LVLs to beams


I have a small bathroom that I am going to be using LVLs to support the floor (a large whirlpool tub is going in).
I'd like to frame the existing beams in with LVLs so the joist LVLs will have a nice clean straight surface to attach to.

What types of fasteners are best for this?

To clarify: right now there are no joists, I want to frame the perimeter of the room with LVLs and then attach LVLs to those by using metal hangers creating joists.

What fasteners do I use to frame the LVLs to the existing perimeter beams?

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Old 04-13-2012, 05:52 PM   #2
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Attaching LVLs to beams


Simpson makes hangers that will carry LVL's.

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Old 04-13-2012, 05:58 PM   #3
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Attaching LVLs to beams


Hi Thanks for the reply.
However I am not looking for info for hanging the joists but rather how to attach LVLs to the perimeter of the existing beams.

For example:
the room is 10'x8' and currently there are no joists in place. just an empty rectangle. Before I put joists in place, I want to frame the 10x8 area with LVLs going all the way around the rectangle, then once those are in place I plan on hanging additional LVLs using the strongties connected to the LVL frame I created.

However I am not sure of the best way to attach the frame to the existing beams of the house.

FYI: I want to do this because the house is very old and the existing beams are not perfectly flat and have notches from where the original joists fit into the notches. I'd like a nice square frame for the new joists to attach to.
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Old 04-13-2012, 06:12 PM   #4
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Attaching LVLs to beams


That will need to be evaluated on site by an engineer.
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Old 04-13-2012, 10:40 PM   #5
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Attaching LVLs to beams


If you take a pic of what you have and provide a drawing of what you'd like to do, well be in a better position to help you
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Old 04-13-2012, 11:13 PM   #6
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Attaching LVLs to beams


I have attached two photos, one is an overall and the other shows one of the beams I want to attach the LVLs too. (The existing joists will be removed)
In Photo 3 I outlined in yellow representing where I want to attach the LVLs.
then I am going to put in new joists.
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Old 04-14-2012, 12:06 AM   #7
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Attaching LVLs to beams


It's hard to tell from the pics. Are those beams resting directly on soil???
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Old 04-14-2012, 01:05 AM   #8
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Attaching LVLs to beams


No, for some reason when I pulled up the floor, in between the existing joists was filled with saw dust. It is a second floor bathroom.
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Old 04-14-2012, 03:38 AM   #9
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Attaching LVLs to beams


Bolts or lag bolts. However for this type of work in most places you will require a permit which you have a drawing and a detail for this. It's very hard to tell based on your writings and pictures.
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Old 04-14-2012, 05:29 AM   #10
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Attaching LVLs to beams


Wow. For starters, you can't side fasten a beam to a beam. Beams must rest on a support column. PLEASE do not try to wing this. That area needs to be redesigned by a structural engineer. You can do the framing work, but you are not qualified to design the sort of changes you're talking about.
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Old 04-14-2012, 09:49 AM   #11
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Attaching LVLs to beams


Quote:
Originally Posted by cortell
Wow. For starters, you can't side fasten a beam to a beam. Beams must rest on a support column. .
That's not true at all. Beams hang off of beams all the time. Special hangers. All designed by an architect or engineer.

I'm not talking about the OP's situation.
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Old 04-14-2012, 09:58 AM   #12
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Attaching LVLs to beams


Joe, show me an example of a beam that has been SIDE fastened to a beam and is structurally sound.
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Old 04-14-2012, 10:14 AM   #13
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Attaching LVLs to beams


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Joe, show me an example of a beam that has been SIDE fastened to a beam and is structurally sound.
I just told you how. I framed many houses and additions where you have the main carrying beam supported at the ends and you have the side mounted beam connected to it with a special hanger. This is something that's done all the time. The main beam is designed to carry the load of the side beam with no columns underneath. This is nothing new.
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Old 04-14-2012, 10:39 AM   #14
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Attaching LVLs to beams


By side fastening, I'm referring to sistering one beam to another, where the new beam ends up not resting on the support column. Hanging one beam off another in a joist-like fashion is something completely different, and is certainly common place. The question that was asked implicitly suggested sistering (side fastening) an LVL to an existing beam
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Old 04-14-2012, 10:50 AM   #15
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Attaching LVLs to beams


Quote:
Originally Posted by cortell View Post
By side fastening, I'm referring to sistering one beam to another, where the new beam ends up not resting on the support column. Hanging one beam off another in a joist-like fashion is something completely different, and is certainly common place. The question that was asked implicitly suggested sistering (side fastening) an LVL to an existing beam
You mean butting the beam together?

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