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Homeowner Forum / Construction / July 2005



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Brand New House - Small Cracks in Basement - Normal?

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utseay@aol.com - 25 Jul 2005 03:55 GMT
Three weeks ago I closed on a house and have been moving in non-stop
ever since.  While I was brining some things into the basement today, I
noticed a small crack running inbetween my washer and dryer.  As I
looked closer I noticed it spanned across the basement, webbing out in
a few different directions.  I don't recall seeing these cracks a month
ago, becuase I was worried about this exact thing, and looked very
closly.  The house was built on fill dirt that had been developed only
three months before the construction began on the house.  I feared
settlement may cause the foundation to crack.  Are these small cracks
just that?

Is this something to worry about?  Am I covered under anything, being
that it is a brand new house and I've only had it 3 weeks?  What would
you suggest I do from this point?

Below are some pictures I have taken (3 total, with 2 different links
to each in case you cannot open one of them):

http://utseay.smugmug.com/gallery/683511/1/29639477/Medium
http://utseay.smugmug.com/photos/29639477-M.jpg

http://utseay.smugmug.com/gallery/683511/1/29639529/Large
http://utseay.smugmug.com/photos/29639529-L.jpg

http://utseay.smugmug.com/gallery/683511/1/29640121/Large
http://utseay.smugmug.com/photos/29640121-O.jpg
Phil Scott - 25 Jul 2005 05:48 GMT
> Three weeks ago I closed on a house and have been moving in
> non-stop
[quoted text clipped - 34 lines]
> http://utseay.smugmug.com/gallery/683511/1/29640121/Large
> http://utseay.smugmug.com/photos/29640121-O.jpg

all concrete work shrinks and cracks thats normal.. if it
changes elevation at a crack THEN is settling.. a faint bit of
settling is also normal..  too much settling is not good..like
say three feet or so..that can be a problem especially if you
put peas on your plate and they all roll to one side or your
beers slide the end table..

then its a problem/

but what you have is nothing..  more cracks will show up later
as the concrete cures more.

Phil Scott
utseay@aol.com - 25 Jul 2005 05:59 GMT
Thank you Phil for the quick response!

So cracking is even normal this early?
Phil Scott - 25 Jul 2005 07:29 GMT
> Thank you Phil for the quick response!
>
> So cracking is even normal this early?

entirely.  expect those to widen about 50% and more fine
cracks to show up.. its all fine..unavoidable in fact..at
least until non shrink concrete is developed.

if the cracks change *elevation then its earth movement.

Phil Scott
stk - 25 Jul 2005 12:24 GMT
The cracks are an invitation for water seepage.  You might have
water coming in thru them during rain or winter melts.

>Three weeks ago I closed on a house and have been moving in non-stop
>ever since.  While I was brining some things into the basement today, I
[quoted text clipped - 22 lines]
>http://utseay.smugmug.com/gallery/683511/1/29640121/Large
>http://utseay.smugmug.com/photos/29640121-O.jpg
Joe - 25 Jul 2005 13:58 GMT
You talk like cracks are unusual.
I'd like you to show me a basement floor that doesn't have any cracks.

Signature

JerryD(upstateNY)

The cracks are an invitation for water seepage.  You might have
water coming in thru them during rain or winter melts.

>Three weeks ago I closed on a house and have been moving in non-stop
>ever since.  While I was brining some things into the basement today, I
[quoted text clipped - 22 lines]
>http://utseay.smugmug.com/gallery/683511/1/29640121/Large
>http://utseay.smugmug.com/photos/29640121-O.jpg
NuckinFutz - 25 Jul 2005 16:07 GMT
I would tear down the house and start over again

> You talk like cracks are unusual.
> I'd like you to show me a basement floor that doesn't have any cracks.
[quoted text clipped - 25 lines]
>>http://utseay.smugmug.com/gallery/683511/1/29640121/Large
>>http://utseay.smugmug.com/photos/29640121-O.jpg
Phil Scott - 25 Jul 2005 16:53 GMT
>I would tear down the house and start over again

  Yes absolutely.   Id blast myself.  Get down to bedrock
then start over.

>> You talk like cracks are unusual.
>> I'd like you to show me a basement floor that doesn't have
[quoted text clipped - 38 lines]
>>>http://utseay.smugmug.com/gallery/683511/1/29640121/Large
>>>http://utseay.smugmug.com/photos/29640121-O.jpg
Phil Scott - 25 Jul 2005 16:52 GMT
> The cracks are an invitation for water seepage.  You might
> have
> water coming in thru them during rain or winter melts.

Possible, but the cracks are also inevitable.   If the
foundation is properly drained there will be no water seepage.

Phil Scott

>>Three weeks ago I closed on a house and have been moving in
>>non-stop
[quoted text clipped - 34 lines]
>>http://utseay.smugmug.com/gallery/683511/1/29640121/Large
>>http://utseay.smugmug.com/photos/29640121-O.jpg
stk - 25 Jul 2005 23:33 GMT
Your foundation/weep tiles are at the bottom.  If your cracks
above then water can easily seep into them, even before the
water gets to the weep tiles.

>Possible, but the cracks are also inevitable.   If the
>foundation is properly drained there will be no water seepage.
>
>Phil Scott
Phil Scott - 25 Jul 2005 23:41 GMT
> Your foundation/weep tiles are at the bottom.  If your
> cracks
> above then water can easily seep into them, even before the
> water gets to the weep tiles.

Are you saying that if the cracks are above the weep tiles,
that water will flow up through them, before it flows down
through the weep tiles?

On another issues:  the type of cracks...  some go through the
slab of course, others, the fine ones are often only at the
surface.

Someone else mentioned that there should be trowled or cut
grooves in the slab to control cracking... thats fine of
course.. but just allows the slab to crack along the weakened
area...it still cracks.   no?   Thus... expansion joints in
most slabs.  No expansion joints (which go clear through the
slab)...its going to expand and contract...    cracks.

Phil Scott

>>Possible, but the cracks are also inevitable.   If the
>>foundation is properly drained there will be no water
>>seepage.
>>
>>Phil Scott
Bob Morrison - 26 Jul 2005 00:07 GMT
In a previous post Phil Scott says...
> On another issues:  the type of cracks...  some go through the
> slab of course, others, the fine ones are often only at the
[quoted text clipped - 6 lines]
> most slabs.  No expansion joints (which go clear through the
> slab)...its going to expand and contract...    cracks.

Phil:

Most (but not all) concrete cracks are shrinkage cracks.  The point of
crack control joints is to force the concrete to crack in selected
locations rather than randomly as in the photographs posted earlier.

Here's the basic chemistry:  it takes a little less than 3 gallons per
sack of cement to hydrate the cement.  Most standard construction mixes
call for about 6 gallons per sack of cement.  The "extra" 3 gallons is
so the mix can be handled.  When that 3 gallons evaporates, the concrete
shrinks and cracks.

No amount of reinforcing steel will prevent that cracking.  This has to
do with the difference in Young's Modulus for the two materials.  In
other words, the concrete will have already cracked by the time the
steel starts to pick up any appreciable load.  Which in turn is the
reason welded wire fabric is useless in a slab as a crack preventative.

It is possible to reduce shrinkage cracking by reducing the amount of
water in the mix.  This is accomplished in a number of ways with various
additives.  BTW, the chemistry of concrete and its additives is a pretty
fascinating subject.

The only way that I know of to eliminate cracking in concrete is to
apply a prestressing force. In other words, pre-compressing the concrete
so that any change in shape due to shrinkage only occurs at the edges
not in the middle of a shape.

Signature

Bob Morrison, PE, SE
R L Morrison Engineering Co
Structural & Civil Engineering
Poulsbo WA

frippletoot@hotmail.com - 25 Jul 2005 16:43 GMT
Document the cracks, and note them in your warranty service requests,
(there will almost certainly be something you will have to contact the
builder about during the warranty period), in writing. Try to get
something in writing from the builder stating his/her opinion of the
cracks, such as a written response to your letter.  Even an email but a
letter is better.  I recommend sending any warranty requests by
certified return receipt mail, or at least with a certificate of
mailing.  You need proof you reported this during the warranty period,
in case it does turn out to be something bad.  It may not be anything
to worry about, but if it is, you don't want to be caught with no proof
you ever notifed the builder while he/she was still obligated.
Phil Scott - 25 Jul 2005 16:55 GMT
> Document the cracks, and note them in your warranty service
> requests,
[quoted text clipped - 18 lines]
> you ever notifed the builder while he/she was still
> obligated.

did you see the pics?  those cracks are unavoidably part of
any large slab.

Phil Scott
Bob Morrison - 25 Jul 2005 17:50 GMT
In a previous post  says...

> Is this something to worry about?  Am I covered under anything, being
> that it is a brand new house and I've only had it 3 weeks?  What would
> you suggest I do from this point?

The cracks appear to be shrinkage cracks caused by a lack of crack
control joints.  Joints should have been scored or cut at about every
150 sq.ft.  You can monitor the crack movement by painting a small
amount of "White-Out" across the crack.  If it is still moving the
white-out will also crack.  If it does, I suggest you document with
dates of observation.  You may need this information to file a claim
against the builder, or at least to get the builder's attention.

What's up with all the rust stains?

Signature

Bob Morrison, PE, SE
R L Morrison Engineering Co
Structural & Civil Engineering
Poulsbo WA

utseay@aol.com - 26 Jul 2005 02:39 GMT
rust stains?  I'm not sure which pic your talking about, but the floor
has a lot of dry dirt in  it and I haven't had a chance to clean it up
yet.  If your talking about the dark wet spot, that was were I moved a
trash bag and something had leaked out.
Phil Scott - 26 Jul 2005 03:31 GMT
> What's up with all the rust stains?

When I was 2 years old I used to live in the grey two story
town houses built before WW2 on the hill... two of them still
standing when I was by there in 1992 approx.  I went to the
apartment we used to live in and got a tour... the coal bins
out front had been removed but the hill behind the building we
were in was still there, a school playing field I believe is
there.

My father worked in Bremerton as a Machinist making torpedo
pin sets (that misfired for a while....they found because the
tolerances were too tight).

My father took me to the Anchor Bar near the ferry landing
from the time I was  2 until I was maybe 4 years old..  one or
two times.  I was back there on a visit in 1992, it was the
same..white and blue..a very long bar.

One of my fathers friends was in the engineering business in
Poulsbo..McKinzie I think but Im not sure...when I was driving
through I recognised the name on a small engineering office
near the water front area.

Strangeness sets in.
L Ron Hubbard, 10 years later the founder of the criminal cult
of scientology was stationed in Bremerton in WW2...he was a
heavy drinkng and druggin' man...with a lying problem.  ..and
later *serious space alien problems.

it gets messy.  For instance in 1965 the CIA funded the SRI
research with Hubbard clones...and lately  Col Wm Odom ex head
of the CIA and NSA heads one of the scienotology now collapsed
pump and dump stock fraud schemes ATEG.  Not the legitimate
one on the dow, but the OTC ATEG...40 million dollars
vaporized.  In 1972 the ex deputy IRS commissioner, Mead
Emmory, living in Seattle now, founds a shell corporation
called CST  (Church of Spiritual Technology) a shell
corporation to hold Hubbies money and copyrights.)

Id hazard a guess that Hubbard hung out at the Anchor Bar. He
was a Lt I think, PT type boats based for much of his career
in the Navy in Bremerton.  His father may have been with US
Naval intelligence but thats not completely clear.

Hubbard was known as a group hypnotist at the time and later
in LS, and a fan of Aliester Crowley, Commander (Snake)
thompson both satanists according to their own claims. ..
(Charlie Mansons roots are in scientology)

In the 1991 I wrote an e book called "beyond the Black
Magicians'... Hubbard was long since dead (jan 86),.. but his
cult sent thugs after me for just mentioning his name in
conjunction with his associates and Jack Parsons the rocket
scientist. ( Of JPL fame)

Currently scientology has spawned a lot of guys that are
currently doing time at camp fed..  for espionage, fraud,
money laundering, blackmail, murder and stock fraud (into the
billions).. . not any of the really heavies however.

Sky Dayton, who founded EarthLink at age 20 is a
scientologist, whos prime fan is George Soros, Daytons
incubator spawned an investment bank USBX...  USBX has
recently joint ventured with the CIA's  Carlyle group.

The entire mess just keeps propagating like crabs at the
Honollulu yacht club.

Rewinding slightly...

Back to Elko Nev at age 5.  Downwind from the Hanford Nuc
Weapons lab where I was raised until I was 9... in that time
frame or maybe a little later, the gentle folk at hanford
released a few tons of plutonium oxide into the atmosphere
from 'Z' plant...thats 35 miles inside the secured perimeter
from the Richland Wa gate.

they wanted to see what would happen to the cancer rates in
down wind areas.  That included Elko.

its a long story.

so I will skip most of it

40 years later I ended up at Hanford's Z plant however (then
renamed the PFP, then the PSSF to confuse people, thats where
the plutonium that went into Nagasaki was made)... consulting
them on a range of issues but mostly hired to be a fall
guy...which I am not real good at, I am more the hoser type...
that was messy.

Their exhaust ducts and that exhaust stack are caked with
large chunks of PuO that if disturbed will fall off, land on
another piece and go critical.

(that situation was on 60 minutes, congressional hearings from
the late 60's and 70's....   I testified the last round in
1995.. the fall out from that was in 1998 approx.)

Accordingly one notices that a lot of history went through the
Anchor bar and some of it ended up terminally south.

... for instance the US Army's 'star fire'
program...involving Hubbards notions, voodoo dolls, pins and
razor blades.

    *****

On the OP's crack thang...what do you think?  We should
bulldoze and start over probably.   Or maybe blast, then
bulldoze?

Phil Scott
Quincy - 26 Jul 2005 03:55 GMT
"Bob Morrison"  wrote in message

> The cracks appear to be shrinkage cracks caused by a lack of crack
> control joints.

Being cracked so soon, could be an indication of someone souping up the mix.
Buck Turgidson - 26 Jul 2005 00:40 GMT
You might also want to have the house checked for radon.  Cracks can
increase radon infiltration.
Phil Scott - 26 Jul 2005 01:32 GMT
> You might also want to have the house checked for radon.
> Cracks can
> increase radon infiltration.

I think the whole place should just be bulldozed and started
over.. perhaps after bulldozing the earth can be salted or
something.

there is no way in hell that one might wait until the slab
cures and seal the floor... you could get molecules around the
edges (gasp).

.....and ventilation of course doesn't work.
You just have to BREATHE the radon and DIE.

:)

Phil Scott
utseay@aol.com - 26 Jul 2005 02:40 GMT
I'm not 100% sure that's too good of an idea.
Phil Scott - 26 Jul 2005 04:30 GMT
> I'm not 100% sure that's too good of an idea.

Ok then...if we don't blast.   then what do you propose?
You guys need to make up your mind fast, before they finish
running the fuse.
Steven - 26 Jul 2005 05:25 GMT
Those cracks are normal.  I'm concerned about the block in picture #1. There
appears to be a large amount of efflorescence ( white chalky substance) at
the mortar joints.  This is formed from salt deposits left behind after
water evaporates.  The presence of the efflorescence *could* indicate water
movement through the block, which indicates a water drainage problem behind
the block, which could lead to water in the basement, wall movement, etc.

As far as warranty concerns on the concrete, most builders warranties have a
section specifying how they deal with cracks in concrete.  Typically on a
basement floor, if the crack is less than 3/16" wide or has less than 1/8"
vertical displacement, it conforms to the industry accepted tolerances, and
the builder would not be liable for repair.

> Three weeks ago I closed on a house and have been moving in non-stop
> ever since.  While I was brining some things into the basement today, I
[quoted text clipped - 22 lines]
> http://utseay.smugmug.com/gallery/683511/1/29640121/Large
> http://utseay.smugmug.com/photos/29640121-O.jpg
utseay@aol.com - 26 Jul 2005 12:18 GMT
The white stuff on the walls is from water.  When I first moved in it
rained pretty good and the water was flowing through the center blocks
like the niagra.  I had my builder out the next day and he came to the
conclusion that he forgot to FLASH the house.  They done it that day
and I haven't had a problem since.
frippletoot@hotmail.com - 26 Jul 2005 17:13 GMT
OP wrote: "The white stuff on the walls is from water.  When I first
moved in it
rained pretty good and the water was flowing through the center blocks
like the niagra.  I had my builder out the next day and he came to the
conclusion that he forgot to FLASH the house.  They done it that day
and I haven't had a problem since. "

I'm not a contractor but this makes me wonder how you flash a house
after it's all done, in that amount of time.  I do know builders
"forget" to use flashing quite regularly--so regularly in fact it
should fall within many state's definition of "fraud."  But the
flashing I'm seeing, (or more accurately seeing the space where it
should be on thousands of new homes going up in my area), is done
before windows are installed in framing, and before shingles are on the
roof, etc.  I have this sneaking feeling your builder forgot some other
things, and you should, as i said in my earlier reply, document this
very well.  You may need all that documentation sooner than you think.
I wish you the best of luck.
Harry - 27 Jul 2005 02:34 GMT
>OP wrote: "The white stuff on the walls is from water.  When I first
>moved in it
[quoted text clipped - 14 lines]
>very well.  You may need all that documentation sooner than you think.
>I wish you the best of luck.

Hello,
Youare soooo right about their "forgetting". I helped my parents build their
cape-cod house in Pa. and the slobs we ran into is unbelievable (if Jesus
was a contracter itis no wonder they murdered Him). The way we stopped the
"wet basement" was to dig down so many yards (it couldhave been all the way
down, but i donot think so) along the wall of the basement; tar/whatever
the wall; refill it up so far; then pour a concrete lip all around the entire
house - it worked.

 
Harry - 27 Jul 2005 02:05 GMT
>Three weeks ago I closed on a house and have been moving in non-stop
>ever since.  While I was brining some things into the basement today, I
[quoted text clipped - 22 lines]
>http://utseay.smugmug.com/gallery/683511/1/29640121/Large
>http://utseay.smugmug.com/photos/29640121-O.jpg

Hello,
Back in the old days they blocked off slabs in half.
Can you imagine pouring a terrazzo-floor slab for a house and having those
cracks in it?
In Hawaii i lived on a slab that was painted white; confettied (paint pieces
blown out over the stickem), then plastic coated - can you imagine having
cracks in that? Can you imagine how beautiful the white, lighted, Christmas-tree
reflection looked?
I think the amount of rounded pebbles you use in the mix makes a difference.

I sort of remember something about when the mix isnot right and the lime
or something floating up to the top; just as cream in milk, and causing just
this kind of trouble. Or it could have something to do with too much liquid
in the mix or not enough lime etc. In other words itis all in the mix (how
you mix the mix). I know there is answer, however i cannot remember what
it was, and iam sure it is somewhere on the Internet. I better find it before
i wind up in your situation, so thank you for the reminder.

 
ANDY WIERSMA - 27 Jul 2005 23:10 GMT
No, you don't want cracks. Yes it is common. You can have them repaired, by
the builder most likely. You can also use a number of different methods to
fix them. I would "live" in it for a while to see what else pops up.There is
no worry unless you notice an exterme amount of water.
> Three weeks ago I closed on a house and have been moving in non-stop
> ever since.  While I was brining some things into the basement today, I
[quoted text clipped - 22 lines]
> http://utseay.smugmug.com/gallery/683511/1/29640121/Large
> http://utseay.smugmug.com/photos/29640121-O.jpg
 
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