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Thread: Vertical crack

  1. #1
    Join Date
    Mar 2007
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    Greenville, N.C.
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    254

    Default Vertical crack

    At the left of a porch on a 9 year old brick veneer home, the brick is cracked straight down the first joint from top to porch floor. It is a bit wet under that area and there is evidence of termite activity but both would seem to be beside the point.
    Any ideas? I'm trying to upload a picture, but I don't know . . .
    JLMathis

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  2. #2
    Join Date
    Mar 2007
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    Orlando, FL
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    Default Re: Vertical crack

    Try posting a larger photo, I can't see a thing.


  3. #3
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    Connecticut
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    Default Re: Vertical crack

    downspout drainage next to the house


  4. #4
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    Mar 2012
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    Default Re: Vertical crack

    Such cracks are the result of a lack of brick veneer expansion joints.

    Texas Inspector
    http://www.texasinspector.com
    What the plainspoken man lacks in subtlety, he makes up in clarity.

  5. #5
    Join Date
    Nov 2011
    Location
    Oregon, USA
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    Default Re: Vertical crack

    Quote Originally Posted by Aaron Miller View Post
    Such cracks are the result of a lack of brick veneer expansion joints.
    "Take another puff" . . . . . Don't know what ya' been smokin', boy, but it can't be legal.

    Let me explain, in simple terms even you should be able to understand:

    Using basic arithmetic and a coefficient of thermal expansion of brick masonry of 0.0000031, a typical unrestrained 40'-long brick veneer wall will move only 1/16" total at each end, through a 100-degree F. (total) temperature swing. Considerably less than that if properly tied to the wall with steel brick ties at regular intervals.

    There are probably several factors taking place, causing the vertical crack in the OP's photo. Thermal expansion may be one of them, but I suspect just a very small contributor.


  6. #6
    Join Date
    Nov 2011
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    Oregon, USA
    Posts
    333

    Default Re: Vertical crack

    "Taking up the bandwidth?" "Other misfits on my ignore list?" You totally lost me again, Aaron, or Jesus, or whatever you're calling yourself today. Interesting knee-jerk reaction for having a simple difference of opinion.

    But it really is simple arithmetic, so I have no idea what you hope to "set me straight" on. You know, the stuff you should have learned in grade school?

    To Summarize:
    Total movement equals the product of movement length times total temperature difference times coefficient of thermal expansion. If you've been making a common practice of telling your clients that any vertical cracking in brickwork is solely the result of missing expansion joints, then you, my friend, are the one who (badly) needs to be set straight. There are thousands (millions?) of residential and commercial brick veneer walls in the world which have no expansion joints and which are not cracked.


  7. #7
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    Aug 2007
    Location
    Memphis TN.
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    4,311

    Default Re: Vertical crack

    Quote Originally Posted by Aaron Miller View Post
    BM:

    I won't take up the bandwidth here setting you straight, so just email me at .
    .
    Way to Go Aaron,

    Don't get Goated into a Another Long Trip Outta Town.

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  8. #8
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    Default Re: Vertical crack

    Texas Inspector
    http://www.texasinspector.com
    What the plainspoken man lacks in subtlety, he makes up in clarity.

  9. #9
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    Default Re: Vertical crack

    Don't get Goated into a Another Long Trip Outta Town.
    I think you meant "goaded", but I like the visual your version allows.

    Texas Inspector
    http://www.texasinspector.com
    What the plainspoken man lacks in subtlety, he makes up in clarity.

  10. #10
    Join Date
    Mar 2007
    Location
    Plano, Texas
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    Default Re: Vertical crack

    Good information Aaron, Thanks.
    From the Article "Corners. Brickwork will expand in the plane of the wall. At
    a corner, the brickwork on each side will expand toward
    the corner. Absence of an expansion joint near a corner or
    an insufficient number of expansion joints in the wall can
    result in cracking at the corner as shown in Photo 2. This
    typically occurs at the first head joint on one side of the
    corner."

    I for one typically think about thermal expansion to the exclusion of other stress factors but the document Aaron provided lists several other expansion factors. All the factors have to be dealt with for a masonry structure to be crack free whether the allowances are intentional or just happy coincidence. As Dr. Joe oft repeats, "Buildings move, let them move".

    Jim Luttrall
    www.MrInspector.net
    Plano, Texas

  11. #11
    Join Date
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    Default Re: Vertical crack

    Quote Originally Posted by Aaron Miller View Post
    I think you meant "goaded", but I like the visual your version allows.
    Nope.
    .

    ***IMPORTANT*** You Need To Register To View Images ***IMPORTANT*** You Need To Register To View Images
    It Might have Choked Artie But it ain't gone'a choke Stymie! Our Gang " The Pooch " (1932)
    Billy J. Stephens HI Service Memphis TN.

  12. #12
    Join Date
    Mar 2012
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    Default Re: Vertical crack

    Quote Originally Posted by Billy Stephens View Post
    Nope.
    .
    Looks just like BM.

    Texas Inspector
    http://www.texasinspector.com
    What the plainspoken man lacks in subtlety, he makes up in clarity.

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