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-   -   Porch pillars (http://www.diychatroom.com/f19/porch-pillars-143001/)

Mabc 05-07-2012 11:25 AM

Porch pillars
 
Alright, so I'm redoing a porch for my family, and right now there are two big brick columns on either side of the porch holding up the roof, and they want the brick columns taken out and two pillars put in, so my question is, can I just knock the columns down till they are about a foot above the ground and anchor the pillars into the brick? Or do I need to take all the brick column out and pore and concrete footer to anchor the pillars to? This will all be under the porch and covered, so no one will see it, I just don't want it to be a hack job.

And another question, the porch is a 17'X17' square attached to the house on 2 sides, do you think two 4x4's on the two front corners of the porch will be enough to support the roof, or should I go 6x6 just to be safe?

And I know a lot of you will probably be thinking "why take out the brick columns?!?!?" well I said that same thing and they said they don't like the look of the columns, I even suggested covering them in stucco, but they were not interested.

joecaption 05-07-2012 11:45 AM

No way to even guess how to do it without some pictures.
Do those bricks run all the way down to the ground? If so they should be already sitting on footings of some kind.

And no that's not even close to enough support. Why not just do one coloum at a time?

Mabc 05-07-2012 11:54 AM

Quote:

Originally Posted by joecaption (Post 916491)
No way to even guess how to do it without some pictures.
Do those bricks run all the way down to the ground? If so they should be already sitting on footings of some kind.

And no that's not even close to enough support. Why not just do one coloum at a time?

They run all the way to the ground, not sure how far though, guess I need to start diggin'!

And do you think a 6x6 would be enough?

Mabc 05-07-2012 12:26 PM

Here is a picture to show how the roof is constructed, and were it's attached to the house at.

http://inlinethumb16.webshots.com/47...600x600Q85.jpg
The blue is the framing, the red is were it's attached to the house, and the green is the columns I want to replace with pillars.

bill01 05-07-2012 12:34 PM

Are you sure it is just brick. Many times the brick is built around the actual column that is holding up the roof.
I would bet the 4x4 will be good enough but it will depend on things like projected snow load. This also assume your column is fairly short (ie 8 ft or so). Not sure I would try multistory ones even with 6x6.

I would bet there is concrete at the bottom of the column. You should be able to buy metal post anchors that designed to be secure to the concrete with drilled anchors. I would also look to buy a metal connection for the top. A porch roof being open underneath lets the wind lift and a few toenails will never hold it.

bill01 05-07-2012 12:45 PM

Posted before I saw the diagram. Almost all the load is on the house with a hip roof in your case. 2/3 is on the top point as long as the top point is well secured and supported. A lot more of the load is being transferred to the side walls of the house on the supported sides. I think a 4x4 is rated to about 6000lbs as a column. Note a 6x6 is almost 3 times that.


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