Building Homes or Extensions/Installing a window

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Expert: Ted Barnhill (Principal, Design45 LLC) - 7/26/2007


Question
Ted,
I am installing a window in a block wall. I noticed that you recommended 6"x6"x3/16" metal for the size but my question is how far should the metal span either side of the window opening? The window I am installing is going to be egress rated according to local code...approximately 4' in width.

Randy

Answer
It depends on several factors.  Here is a reference to get you started doing the calculation: www.brickinfo.org/BIA/technotes/TN31B.pdf

If you don't have any unusual point loads or other issues, 6" bearing each side is probably safe.  If you have any doubt hire an engineer for an hour or two - they are always worth the cost.  Good luck.

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Ted Barnhill (Principal, Design45 LLC)

Expertise

I can answer questions about architectural design, how to work with a designer, and best construction practices for most trades. I specialize in cold-climate design (I'm in Minnesota), older home renovation, and energy-efficient/sustainable design.

Experience

As a Principal of Design45, I design and detail new homes and remodels. I am formally trained in architecture, but have also been a contractor and have experience with many trades. I strive to provide beautiful, durable, and efficient homes for clients and communities of all types and budgets.

Education/Credentials
Undergraduate work at Princeton University (Mathematics), Master's work at the University of Minnesota (Architecture)

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