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Footings for Shed jcarwile 04-15-2009
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Posted by Dioclese on April 16, 2009, 10:15 pm
On Apr 15, 8:53 pm, "Dioclese" <NONE> wrote:
> > Hello,
> > I'm about to build a 12' x 12' shed. I've drawn the plans, elevations
> > and sections in AutoCAD and have every detail hammered out. I'm going
> > to dig 4 holes for the footings and am planning on pouring concrete in
> > the holes to make a base for CMUs. The question I have is how do I
> > make sure that once I've stacked and mortared the CMUs that the top of
> > them are all at the same elevation height so the floor joists that
> > rest on them are nice and level? Do I use some sort of stake and
> > water level or laser level to make sure that each poured base is at
> > the same elevation? Do I just fudge it in the thickness of the mortar
> > between the CMUs so that the last one on top of the stack is level
> > with the others? What's the process that the pros use?
> > Thanks in advance!
> > Jason
> So you want to go footing and CMUs and beam instead of pier and beam...
> Dig the holes, throw in a chair in each hole. Pour the footings and piers
> (sonobouy or 1X12 cedar form with rebar tied to the chair). Done.
> How many footing/piers depends on the anticipated weight it has to
> support.
> But that was left out for a negative reply from you or another respondent
> anyway. I'll bow out here.
> --
> Dave- Hide quoted text -
> - Show quoted text -

Sorry for my ignorance, but what's the 'chair' that you're talking
about thowing into each hole?

----------

Start from the beginning, I assume you understand what pier is, and a
sonobouy as well.

A "chair" is what a pier sits on to prevent side to side walking or
sinking.. Its made of rebar covered by concrete. The "chair" has
emanations of rebar, integral to the rebar in the chair, above it as part of
the pier itself.. The pier is then formed up and poured over this same
rebar emantions from the "chair" below. A sonobouy can be substituted but
must use the same rebar emanations from the "chair".

Contrary to Rico's thing on rust. Nothing could be further from the truth.
No significant rebar rust can occur using the method I mentioned, but has
nothing to do with the purpose of a "chair". A "chair" is more lilkely to
be used if the soil can't support the pier as in fractured rock, soft soils
or sand. Hillside foundation is also a factor in choosing a "chair".

"Chairs" are available for sale. They can easily be created on-site if
you're into cutting rebar and tying same. Its easier to make a "chair"
specifically for your needs rather than purchasing a generic "chair" and
working your way around that chair with mods and so forth for tying into the
pier or sonobuoy. Typically, in an on-site "chair" fabrication, the hole is
dug and the chair is "thrown" into the hole. Concrete is poured on the
rebar chair. The rebar emantions for the pier are adjusted for plumb and
square with the anticipated foundation prior to the pour. A couple of days
later, the pier is formed up and poured..

A simple footer below the frost line may be ample. I don't know your locale
and soil and elevation slope specifics. Not knowing that, I tend to
overkill based on the unknown. Read A_S_S_U_M_E.
--
Dave
April 16th, 2009 Day 1 post Tea Party.
This day in history occurred:
Nancy Pelosi response was undignified per her allegation that such are
funded by right wing money big money and attended exclusively by right wing
extremists.
White House staff indicated that officially not recognizing the nation-wide
gatherings in any fashion.
Some news reporters were found attempting to goad responses from attendees
at the gatherings with response not filling their (some news reporters) TV
political needs. Too bad for them.
Woebama in Mexico. 2nd amendment rights being pinged again. Ignoring
locking down the U.S/Mexico border again.
We the people...
No political party or otherwise in that.
Locked signature to prevent subsequent historical revisionism.



Posted by Tom Cular on April 17, 2009, 7:43 pm
Dave,
Your ramblings clearly show your ignorance of reinforced concrete
construction. NO reinforcing steel should be closer than 3" to the subgrade
or closer than 2" to an exposed surface. When rebar rusts it expands and
causes the concrete to fail; the expansion of the steel caused by oxidation
or expansive rust creates more force than the tensile strength of concrete
can overcome. This is the reason highway agencies all across the country
specify epoxy coated rebar for decks, parapets and any other concrete
exposed to the weather and or chlorides. That means NO calcium chloride when
it gets chilly.

Rico attempted to be helpful and your info to the OP was ill advised at
best.

Tom
"Dioclese" <NONE> wrote in message
> On Apr 15, 8:53 pm, "Dioclese" <NONE> wrote:
>> > Hello,
>> > I'm about to build a 12' x 12' shed. I've drawn the plans, elevations
>> > and sections in AutoCAD and have every detail hammered out. I'm going
>> > to dig 4 holes for the footings and am planning on pouring concrete in
>> > the holes to make a base for CMUs. The question I have is how do I
>> > make sure that once I've stacked and mortared the CMUs that the top of
>> > them are all at the same elevation height so the floor joists that
>> > rest on them are nice and level? Do I use some sort of stake and
>> > water level or laser level to make sure that each poured base is at
>> > the same elevation? Do I just fudge it in the thickness of the mortar
>> > between the CMUs so that the last one on top of the stack is level
>> > with the others? What's the process that the pros use?
>> > Thanks in advance!
>> > Jason
>> So you want to go footing and CMUs and beam instead of pier and beam...
>> Dig the holes, throw in a chair in each hole. Pour the footings and piers
>> (sonobouy or 1X12 cedar form with rebar tied to the chair). Done.
>> How many footing/piers depends on the anticipated weight it has to
>> support.
>> But that was left out for a negative reply from you or another respondent
>> anyway. I'll bow out here.
>> --
>> Dave- Hide quoted text -
>> - Show quoted text -
> Sorry for my ignorance, but what's the 'chair' that you're talking
> about thowing into each hole?
> ----------
> Start from the beginning, I assume you understand what pier is, and a
> sonobouy as well.
> A "chair" is what a pier sits on to prevent side to side walking or
> sinking.. Its made of rebar covered by concrete. The "chair" has
> emanations of rebar, integral to the rebar in the chair, above it as part
> of the pier itself.. The pier is then formed up and poured over this same
> rebar emantions from the "chair" below. A sonobouy can be substituted but
> must use the same rebar emanations from the "chair".
> Contrary to Rico's thing on rust. Nothing could be further from the
> truth. No significant rebar rust can occur using the method I mentioned,
> but has nothing to do with the purpose of a "chair". A "chair" is more
> lilkely to be used if the soil can't support the pier as in fractured
> rock, soft soils or sand. Hillside foundation is also a factor in
> choosing a "chair".
> "Chairs" are available for sale. They can easily be created on-site if
> you're into cutting rebar and tying same. Its easier to make a "chair"
> specifically for your needs rather than purchasing a generic "chair" and
> working your way around that chair with mods and so forth for tying into
> the pier or sonobuoy. Typically, in an on-site "chair" fabrication, the
> hole is dug and the chair is "thrown" into the hole. Concrete is poured
> on the rebar chair. The rebar emantions for the pier are adjusted for
> plumb and square with the anticipated foundation prior to the pour. A
> couple of days later, the pier is formed up and poured..
> A simple footer below the frost line may be ample. I don't know your
> locale and soil and elevation slope specifics. Not knowing that, I tend
> to overkill based on the unknown. Read A_S_S_U_M_E.
> --
> Dave
> April 16th, 2009 Day 1 post Tea Party.
> This day in history occurred:
> Nancy Pelosi response was undignified per her allegation that such are
> funded by right wing money big money and attended exclusively by right
> wing extremists.
> White House staff indicated that officially not recognizing the
> nation-wide gatherings in any fashion.
> Some news reporters were found attempting to goad responses from attendees
> at the gatherings with response not filling their (some news reporters) TV
> political needs. Too bad for them.
> Woebama in Mexico. 2nd amendment rights being pinged again. Ignoring
> locking down the U.S/Mexico border again.
> We the people...
> No political party or otherwise in that.
> Locked signature to prevent subsequent historical revisionism.
>


Posted by Dioclese on April 23, 2009, 4:50 pm
All true except your self-declared ignorance rantings, regardless that is
not the purpose of a "chair". Believe that was the question I responded to.

--
Dave

> Dave,
> Your ramblings clearly show your ignorance of reinforced concrete
> construction. NO reinforcing steel should be closer than 3" to the
> subgrade or closer than 2" to an exposed surface. When rebar rusts it
> expands and causes the concrete to fail; the expansion of the steel caused
> by oxidation or expansive rust creates more force than the tensile
> strength of concrete can overcome. This is the reason highway agencies
> all across the country specify epoxy coated rebar for decks, parapets and
> any other concrete exposed to the weather and or chlorides. That means NO
> calcium chloride when it gets chilly.
> Rico attempted to be helpful and your info to the OP was ill advised at
> best.
> Tom
> "Dioclese" <NONE> wrote in message
>> On Apr 15, 8:53 pm, "Dioclese" <NONE> wrote:
>>> > Hello,
>>> > I'm about to build a 12' x 12' shed. I've drawn the plans, elevations
>>> > and sections in AutoCAD and have every detail hammered out. I'm going
>>> > to dig 4 holes for the footings and am planning on pouring concrete in
>>> > the holes to make a base for CMUs. The question I have is how do I
>>> > make sure that once I've stacked and mortared the CMUs that the top of
>>> > them are all at the same elevation height so the floor joists that
>>> > rest on them are nice and level? Do I use some sort of stake and
>>> > water level or laser level to make sure that each poured base is at
>>> > the same elevation? Do I just fudge it in the thickness of the mortar
>>> > between the CMUs so that the last one on top of the stack is level
>>> > with the others? What's the process that the pros use?
>>> > Thanks in advance!
>>> > Jason
>>> So you want to go footing and CMUs and beam instead of pier and beam...
>>> Dig the holes, throw in a chair in each hole. Pour the footings and
>>> piers
>>> (sonobouy or 1X12 cedar form with rebar tied to the chair). Done.
>>> How many footing/piers depends on the anticipated weight it has to
>>> support.
>>> But that was left out for a negative reply from you or another
>>> respondent
>>> anyway. I'll bow out here.
>>> --
>>> Dave- Hide quoted text -
>>> - Show quoted text -
>> Sorry for my ignorance, but what's the 'chair' that you're talking
>> about thowing into each hole?
>> ----------
>> Start from the beginning, I assume you understand what pier is, and a
>> sonobouy as well.
>> A "chair" is what a pier sits on to prevent side to side walking or
>> sinking.. Its made of rebar covered by concrete. The "chair" has
>> emanations of rebar, integral to the rebar in the chair, above it as part
>> of the pier itself.. The pier is then formed up and poured over this
>> same rebar emantions from the "chair" below. A sonobouy can be
>> substituted but must use the same rebar emanations from the "chair".
>> Contrary to Rico's thing on rust. Nothing could be further from the
>> truth. No significant rebar rust can occur using the method I mentioned,
>> but has nothing to do with the purpose of a "chair". A "chair" is more
>> lilkely to be used if the soil can't support the pier as in fractured
>> rock, soft soils or sand. Hillside foundation is also a factor in
>> choosing a "chair".
>> "Chairs" are available for sale. They can easily be created on-site if
>> you're into cutting rebar and tying same. Its easier to make a "chair"
>> specifically for your needs rather than purchasing a generic "chair" and
>> working your way around that chair with mods and so forth for tying into
>> the pier or sonobuoy. Typically, in an on-site "chair" fabrication, the
>> hole is dug and the chair is "thrown" into the hole. Concrete is poured
>> on the rebar chair. The rebar emantions for the pier are adjusted for
>> plumb and square with the anticipated foundation prior to the pour. A
>> couple of days later, the pier is formed up and poured..
>> A simple footer below the frost line may be ample. I don't know your
>> locale and soil and elevation slope specifics. Not knowing that, I tend
>> to overkill based on the unknown. Read A_S_S_U_M_E.
>> --
>> Dave
>> April 16th, 2009 Day 1 post Tea Party.
>> This day in history occurred:
>> Nancy Pelosi response was undignified per her allegation that such are
>> funded by right wing money big money and attended exclusively by right
>> wing extremists.
>> White House staff indicated that officially not recognizing the
>> nation-wide gatherings in any fashion.
>> Some news reporters were found attempting to goad responses from
>> attendees at the gatherings with response not filling their (some news
>> reporters) TV political needs. Too bad for them.
>> Woebama in Mexico. 2nd amendment rights being pinged again. Ignoring
>> locking down the U.S/Mexico border again.
>> We the people...
>> No political party or otherwise in that.
>> Locked signature to prevent subsequent historical revisionism.
>



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