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Nesgroup address: alt.building.construction - Date & Time for the message: Mon, 08 Aug 2005 23:22:09 GMT
/ Author of the message: philh |
Title of the message: |
Re: Bricks: Round holes vs. Square holes
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Text of the message: |
Doug Burky wrote: > Which type of brick holds up better under stress? Those with round holes or > those with square holes. This may sound like a stupid question, but I have a > very good reason for asking it. > I work at a brick manufacturing plant. About six months ago we switched from > round holes in the bricks to square holes, supposedly to lessen the weight, > so truckers could carry more bricks on their load. > Ever since then we have had a rash of kiln wrecks, that is, bricks > collapsing in the kiln at 2000 degrees. We had kiln wrecks before with the > round holes, but not to this extent. > If there are any construction or physics geniuses out there, I would greatly > appreciate your input. > > Thanks, > DB > > a circle is more stable than a square. that is why a hole is drilled at the end of a crack in metal to stop the crack from advancing. the circle allows for uniform pressure. the square does not. . |
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Estaplace.com is one the Ceglia Giovanni projects, started on 20 July 2005, and online since 20 August as a real estate platform for listings, mainly operating on the Italian and American/English market in the Internet, Estaplace would like to become the point of referiment for home sellers and home buyers, a site where private owners or real estate agencies can have the possibility to show their offers to the world. Estaplace.com is only one of the Giovanni Ceglia's sites. Everyday Giovanni Ceglia works to improve new Internet tools and services for online marketing and business. Estaplace.com will become the biggest portal for real estate business and investments online.