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Old 07-14-2014, 11:27 PM   #1
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Double 4x6 versus 6x6


Just curious-

I have an instance where I need to install a 6x6 post from our basement, projecting vertically up to our 1st floor to support a 3x1.75" LVL beam (the beam which will support a load-bearing wall). Question is this: Can I build the post from 2-4x6 posts as opposed to a single 6x6 post? This may sound odd, but it is much easier to cut and wrangle 4x6's compared to 6x6's.

Thanks in advance,
Jimmy

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Old 07-14-2014, 11:35 PM   #2
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Double 4x6 versus 6x6


By far most often it's going to be a fuel problem.
And no, just blowing it out with air is not going to fix it.
Going to need the model# and Ser.# off the motor, not the mower to get a rebuild kit.
And power tool shop will have one.

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Old 07-14-2014, 11:43 PM   #3
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Double 4x6 versus 6x6


Quote:
Originally Posted by BigJimmy View Post
Just curious-

I have an instance where I need to install a 6x6 post from our basement, projecting vertically up to our 1st floor to support a 3x1.75" LVL beam (the beam which will support a load-bearing wall). Question is this: Can I build the post from 2-4x6 posts as opposed to a single 6x6 post? This may sound odd, but it is much easier to cut and wrangle 4x6's compared to 6x6's.

Thanks in advance,
Jimmy
Quote:
Originally Posted by joecaption View Post
By far most often it's going to be a fuel problem.
And no, just blowing it out with air is not going to fix it.
Going to need the model# and Ser.# off the motor, not the mower to get a rebuild kit.
And power tool shop will have one.
Um. What?!
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Old 07-15-2014, 06:27 AM   #4
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Double 4x6 versus 6x6


Quote:
Originally Posted by BigJimmy

Um. What?!

Just in case you also have a lawn mower that won't start

Think joe posted in the wrong thread, it happens. Someone will be along soon to answer your question.
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Old 07-15-2014, 07:13 AM   #5
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Double 4x6 versus 6x6


Sorry about that.
I use the Verizon 4 G hot spot and it sucks, I have to cut and paste every reply I make because 1/2 the time it shows as not going through and have to post it again.
I end up with double posting or the wrong reply posted sometimes.
That's my story and I'm sticking to it.
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Old 07-15-2014, 07:21 AM   #6
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Double 4x6 versus 6x6


You did cut out the floor and pore a footer for these post, right?
Both will work but there's a couple reasons I would stick with one 6 X 6.
Going to need to set the post on a post base, never seen one for that odd ball size.
Just as easy to make two cuts on a 6 X 6.
If you decide at some point to box in the post for looks it's going to look better being square.
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Old 07-15-2014, 07:33 AM   #7
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Double 4x6 versus 6x6


Columns (posts) are normally carefully sized by the engineer to prevent failure either by compression or by buckling. Buckling analysis is complicated, but in your case if you join two 4x6 pieces together, you need to make sure that they act as one column with respect to buckling. This means they need to be fastened together correctly so the do not act like two independent columns. Your engineer who designed the project should be the one to specify the fastening schedule to make sure the composite column works correctly, but there is no reason you cannot do it that way. Of course you will need the correct post base and footing, as previously noted, but again you should check with your engineer to verify that the system will work correctly.
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Old 07-15-2014, 08:25 AM   #8
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Double 4x6 versus 6x6


Each piece will dry out differently, eg.

But it is also not necessary to use a factory post base, since it is indoors. I would separate the wood from concrete with a metal plate and anchor with corner brackets that can be covered with finish trim.
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Old 07-16-2014, 09:12 PM   #9
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Double 4x6 versus 6x6


Quote:
Originally Posted by joecaption View Post
Sorry about that.
I use the Verizon 4 G hot spot and it sucks, I have to cut and paste every reply I make because 1/2 the time it shows as not going through and have to post it again.
I end up with double posting or the wrong reply posted sometimes.
That's my story and I'm sticking to it.
Haha! Yeah, I assumed as much! Made me laugh though
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Old 07-16-2014, 09:22 PM   #10
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Double 4x6 versus 6x6


Quote:
Originally Posted by joecaption View Post
You did cut out the floor and pore a footer for these post, right?
Both will work but there's a couple reasons I would stick with one 6 X 6.
Going to need to set the post on a post base, never seen one for that odd ball size.
Just as easy to make two cuts on a 6 X 6.
If you decide at some point to box in the post for looks it's going to look better being square.
Joe-

Yes, there will be a footing, 2'-6" x 2'-6" x 18" deep with 3-#4 rebars each way 3" from the bottom of the pour.

To everyone else-

I suffered a massive aneurysm in the process of posting this original message and forgot that the 4" dimension is actually 3.5," not the 2-3/4" it would need to be in order for two pieces to equal the equivalent thickness of the nominal 6x6 (cuz everyone knows how common lumber is having a profile dimension of 2-3/4" ). Further, the post will indeed sit atop an engineered post base (Simpson or similar) and as many pointed out, I would have had a hard time finding one to fit the 5.5"x7" base of the double 4x6.

I really hate having blond hair sometimes!

Thanks, guys,
Jimmy
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Old 07-16-2014, 10:19 PM   #11
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Double 4x6 versus 6x6


Quote:
Originally Posted by Daniel Holzman View Post
Columns (posts) are normally carefully sized by the engineer to prevent failure either by compression or by buckling. Buckling analysis is complicated, but in your case if you join two 4x6 pieces together, you need to make sure that they act as one column with respect to buckling.
Dan, I work with an office full of bridge engineers. They act like I need a professional analysis when I tell them that I set some hardwood planks on a stack of 2x4's to allow them to dry out!
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Old 07-17-2014, 08:42 AM   #12
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Double 4x6 versus 6x6


why not use a lally column?
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Old 07-19-2014, 11:42 AM   #13
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Double 4x6 versus 6x6


My goof.

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