Brick Arch Failure. Very few home in the Dallas region have
correctly built arches. Homebuilders need only look at the last few
thousand years of architecture to see what works and what fails, and more
importantly, why. If your arch entry or arch window has cracks or
separation in the mortar joints, it's trying to tell you something. The
last thing you want to do is ignore it and hope it will correct itself.
Cast Stone settling down.
After repair
Many homes with arch entries and windows will develop settlement cracks in the
first few years and then remain stable and secure for many many years.
Others unfortunately, will continually move over months and years until they
completely fail. (see
arch research web sites)
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In this case, the arch brickwork was settling downward and was continiuing to shift due to columns unable to support the weight above. Steel lintels were added and the brickwork below the arch will be able to support any future settlement. Many homeowners don't want to lose the arched appearance but this method is safe alternative, permanent and much less expensive than removing all the brickwork and rebuilding around an internal steel structure that would have to be custom fabricated. (click on an image to enlarge)
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In still other cases, the arch brickwork cannot be supported at all and the best case is to simply remove the heavy brickwork and apply wood trimming finished out to look original to the house.
Types of arches. The two main types of arches used in entryways
and windows are "semicircular" and Segmental"
A semicircular arch is known as a balanced arch with little sideways forces
pushing outward. Segmental arches are in a constant state of sideways
force pushing outward. If enough mass on each side can withstand this,
everything is fine. Tall narrow columns at each side will not provide such
mass and throughout history, many segmental arches have failed. Many
homebuyers want arches in the home but lack the height clearance for
semicircular arches. Homebuilders along with architects, wanting to
attract homebuyers, give them segmental arches, without considering the physics
involved. Here at Master Masonry, we can determine what your needs are and
will recommend and perform a safe and permanent course of action involving your arches.
Be sure to also see our testimonials from our satisfied customers.
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