Structural engineers

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  Dec 04, 2009 12:44 PM GMT

  Let's talk vertical foundation cracks.
  
  What would be common causes of a 1/4 inch crack in a 60 yr old house, ( there is a large tree about 15 feet away)? Crack has been filled with a polyurethane compound with a lifetime warranty.
  
  

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  Dec 04, 2009 12:54 PM GMT

  Please encircle the correct answer
  
  a) roots
  b) minor earthquakes
  c) rainwater
  d) termites
  e) wabbits
  f) none of the above
  g) all of the above and some

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  Dec 04, 2009 1:26 PM GMT

  how long has the crack been there? how deep is the crack? are there others? and what is the tree outside?
  
  a 1/4inch crack seems downright odd especially if it was caused by a tree but has happened when a large older tree attempts to go up, but 1/4inch is tiny.
  
  Settling is a common cause.
  Void developing under the slab is a little more of a concern unless it's been there for a while (most common cause is water moving the foundations.
  Drying soil under the house caused from really low rain fall can cause cracks.
  
  when you say 1/4inch crack, do you mean a 1/4inch wide crack?

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