Lifting porch roof to r&r columns

"Cubby" <[email protected]> wrote:

>I need to raise up the roof of a porch a bit to get old columns out and new
>ones in. I was hoping to use the type of jacks I see (and used ages ago)
>on concrete pours to plumb up the forms. Basically was thinking of
>attaching a 4x4 to each end of the jack and then be able to turn the
>turnscrew in the center to raise and lower the roof. First question:
>What are these called? 2nd: Can I do this or am I asking for trouble?
>Next, if these are not recommended for use, then I suspect I'll be heading
>the bottle jack route which is fine but I'll
>have to do each one individually as I don't have 4 bottle jacks (number of
>colums to be removed). Thanks for any inputs.

Lally Column?

http://www.hammerzone.com/archives/framecarp/supplement/floor/joist1/raising.htm

On Jul 10, 11:22 pm, Robert Neville <[email protected]> wrote:
> "Cubby" <[email protected]> wrote:
> >I need to raise up the roof of a porch a bit to get old columns out and new
> >ones in.   I was hoping to use the type of jacks I see (and used ages ago)
> >on concrete pours to plumb up the forms.   Basically was thinking of
> >attaching a 4x4 to each end of the jack and then be able to turn the
> >turnscrew in the center to raise and lower the roof.   First question:
> >What are these called?  2nd:   Can I do this or am I asking for trouble?
> >Next, if these are not recommended for use, then I suspect I'll be heading
> >the bottle jack route which is fine but I'll
> >have to do each one individually as I don't have 4 bottle jacks (number of
> >colums to be removed).   Thanks for any inputs.
>
> Lally Column?
>
> http://www.hammerzone.com/archives/framecarp/supplement/floor/joist1/...

That's not a Lally column. Lally is a trademarked name, and the one
in that article is a post jack (generic term), which is different than
a Lally column. You did point the guy in the right direction, though.

The OP can use a hydraulic bottle jack, a car scissor jack, a post
jack, a railroad jack or simply use a 4x4 at an angle and some
wedges. A porch roof doesn't have much weight, and each jacking point
would probably be bearing a few hundred pounds or so - probably
wouldn't be as high as a quarter ton.

I Googled this:
jacking up a porch roof to replace a column

and came up with this as the very first link:
http://www.hammerzone.com/archives/framecarp/repair/porch/beam13/replace.htm

R

That's not a Lally column. Lally is a trademarked name, and the one
in that article is a post jack (generic term), which is different than
a Lally column. You did point the guy in the right direction, though.

The OP can use a hydraulic bottle jack, a car scissor jack, a post
jack, a railroad jack or simply use a 4x4 at an angle and some
wedges. A porch roof doesn't have much weight, and each jacking point
would probably be bearing a few hundred pounds or so - probably
wouldn't be as high as a quarter ton.

I Googled this:
jacking up a porch roof to replace a column

and came up with this as the very first link:
http://www.hammerzone.com/archives/framecarp/repair/porch/beam13/replace.htm

R

Yup, saw that one before I posted. They use a bottle jack. I was hoping
to avoid buying 4-5 bottle jacks to do this. I have to lift the entire
roof (approx. 24') at the same time and leave it there
long enough to dig new footings, pour concrete, and install new posts.
This is also 150 miles from my home so chances are of me getting all of this
done in a weekend is slim so I want something that I can
put in place and not worry about it lowering the roof (ie. I worry about
that with bottle jacks).
Cheers,
cc

"Cubby" <[email protected]> wrote in message
news:pN-dnRJ9mYb1ZurVnZ2dnUVZ_r7inZ2d@comcast.com...
>
>
> That's not a Lally column. Lally is a trademarked name, and the one
> in that article is a post jack (generic term), which is different than
> a Lally column. You did point the guy in the right direction, though.
>
> The OP can use a hydraulic bottle jack, a car scissor jack, a post
> jack, a railroad jack or simply use a 4x4 at an angle and some
> wedges. A porch roof doesn't have much weight, and each jacking point
> would probably be bearing a few hundred pounds or so - probably
> wouldn't be as high as a quarter ton.
>
> I Googled this:
> jacking up a porch roof to replace a column
>
> and came up with this as the very first link:
> http://www.hammerzone.com/archives/framecarp/repair/porch/beam13/replace.htm
>
> R
>
> Yup, saw that one before I posted. They use a bottle jack. I was hoping to
> avoid buying 4-5 bottle jacks to do this. I have to lift the entire roof
> (approx. 24') at the same time and leave it there
> long enough to dig new footings, pour concrete, and install new posts. This is
> also 150 miles from my home so chances are of me getting all of this done in a
> weekend is slim so I want something that I can
> put in place and not worry about it lowering the roof (ie. I worry about that
> with bottle jacks).
> Cheers,

Jack it up, insert 4x4s, and lower it on them.

"Robert Neville" <[email protected]> wrote in message
news:g56jn201o1j@news2.newsguy.com...
>
> "Cubby" <[email protected]> wrote:
>
>>I need to raise up the roof of a porch a bit to get old columns out and
>>new
>>ones in. I was hoping to use the type of jacks I see (and used ages ago)
>>on concrete pours to plumb up the forms. Basically was thinking of
>>attaching a 4x4 to each end of the jack and then be able to turn the
>>turnscrew in the center to raise and lower the roof. First question:
>>What are these called? 2nd: Can I do this or am I asking for trouble?
>>Next, if these are not recommended for use, then I suspect I'll be heading
>>the bottle jack route which is fine but I'll
>>have to do each one individually as I don't have 4 bottle jacks (number of
>>colums to be removed). Thanks for any inputs.
>
> Lally Column?
>
> http://www.hammerzone.com/archives/framecarp/supplement/floor/joist1/raising.htm
>

Thanks. Those would work. I really don't want to purchase as this is a
once off deal. I'll check with the rental places to see if they carry
them. Thanks.
cc

"Cubby" <[email protected]> wrote in
news:[email protected]:

> Hiya Folks,
> I need to raise up the roof of a porch a bit to get old columns out
> and new ones in. I was hoping to use the type of jacks I see (and
> used ages ago) on concrete pours to plumb up the forms. Basically
> was thinking of attaching a 4x4 to each end of the jack and then be
> able to turn the turnscrew in the center to raise and lower the roof.
> First question: What are these called? 2nd: Can I do this or am I
> asking for trouble? Next, if these are not recommended for use, then I
> suspect I'll be heading the bottle jack route which is fine but I'll
> have to do each one individually as I don't have 4 bottle jacks
> (number of colums to be removed). Thanks for any inputs.
> Cheers,
> cc
>
>

How tall is the column?
What is the diameter or dimensions.

Typically I'll just cut some 2x4 or 4x4's a little longer than the post
length. Wedge it in than hammer the bottom to wedge it vertically raising
the beam above a tad and removing the weight from the post. Use a couple
per post for a warm-fuzzy. Screw or toenail top and bottom is best.

Ones I've done have only been 8-10ft and were 4x4 posts being replaced.
Holding a lot of weight but not some huge amount.

Bottle jacks: 2-ton ones at Borg for $20. Harbor Freight $10. I can see
your temp support post popping out off the bottle jack. Using the post
metod I mentioned, all you have to worry about is the two ends.

Just my .02. Heed replies from others with more extensive experience.

Red Green wrote:

> Typically I'll just cut some 2x4 or 4x4's a little longer than the post
> length. Wedge it in than hammer the bottom to wedge it vertically
> raising the beam above a tad and removing the weight from the post. Use
> a couple per post for a warm-fuzzy. Screw or toenail top and bottom is
> best.
>
> Ones I've done have only been 8-10ft and were 4x4 posts being replaced.
> Holding a lot of weight but not some huge amount.
>
> Bottle jacks: 2-ton ones at Borg for $20. Harbor Freight $10. I can see
> your temp support post popping out off the bottle jack. Using the post
> metod I mentioned, all you have to worry about is the two ends.
>
> Just my .02. Heed replies from others with more extensive experience.

I second this suggestion. It's the method I use on Habitat for Humanity
builds to remove temporary posts and put in a permanent 6x6 cedar post.

--
Steve Bell
New Life Home Improvement
Arlington, TX