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Life – a user's manual Part II - Boksidan

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Cracks in masonry or cast walls<br />

Small cracks in such walls generally have no technical significance, but if it is large and deep horizontal<br />

cracks, the wall has lost part of its load-bearing function. The cracks may be due to that the ground under the<br />

wall sinks (see picture 8). If theground continues to sink, there is also a risk that the wall finally collapses.<br />

To investigate, you can cover the craks. If the cracks develop, they will be visible again. Alternatively, you<br />

can bring in experts who can assess the risks the cracks entails.<br />

Picture 8. Cracks in a basement wall because the ground beneath the wall had sunk, and the wall was not<br />

supported by piles. When we drilled holes in the wall, we found that it was about 0.3 meters<br />

between the ground and the underside of the wall. To ensure the function we built a beam<br />

construction, resting on piles down to bedrock, outside of the wall. The design did both keep the<br />

wall upright and took over it’s load supporting function.<br />

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