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Nesgroup address: alt.building.construction - Date & Time for the message: Sat, 07 May 2005 00:50:41 GMT
/ Author of the message: Matt Whiting |
Title of the message: |
Re: Spacing of roof rafters
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Text of the message: |
Hul Tytus wrote: > Calculation shows a deflection of about .1 inch for a 200 lb load on a > 1X12 30 inches long. Max stress is 125 psi. If you put a couple of scrap > 2x4's 30 in. apart on a concrete floor with a short piece of the intended > 1X12 across them, a little jumping might give you an even better > indicator. > > Hul > Point load mid-span or distributed load? I'm figuring it must be a distributed load as I know that if I stand in the center of a 1x12 that is spanning 30" it will deflect more than 0.1" Been there, done that. Matt . |
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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.