Building Homes or Extensions/Concrete

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Expert: - 11/26/2008


Question
I am a builder in Oregon starting a new residence with a footprint involving several 90 foot single level concrete footings with 24 inch stemwalls.  Is it a good idea to provide expansion joint/break lines in these long runs?  I see Masons doing this in their commercail buildings. Richard

Answer
Richard, we both know that a 90 foot run will crack, the question is where.  The stem is probably covered by brick, so it becomes a bit of non-issue.  Is it a crawl or a slab - I assume a slab.

If I have made good assumptions, I think your energy is better spent elsewhere.  Masons break theirs between 20 and 30 feet.  Rustication in a concrete wall to really work needs to be around 10 feet.

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Dan Griffin

Expertise

I can answer almost all questions related to the total construction process. My expertise is in commercial construction, though I can field most any residential question. I have hands on experience in concrete, heavy equipment, masonry, all phases of carpentry, interior finishes, and I am fairly strong in mechanical and electrical.

Experience

I have over 20 years experience as a commercial carpenter and commercial construction superintendent. I have another 20 years experience in facility management for a major school district.

Organizations
My favorite hobby for he past 12 years has been singing bass in a The OkChorale men's barbershop chorus and the Mature Moments quartet.

Education/Credentials
I hold a Bachelor's degree in English and Math. I have completed many continuing education hours in the building trades. I hold a Master Carpenter card from the AGC, Associated General Contractors.

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