At least for me, the need for and where to put rebar was easier to make sense of when it was explained to me by a very wise basement contractor that concrete's strength is compression and weakness is tension.
That's where the steel rebar comes in as it has excellent resistance to stretching. For example; engineered prints on basement walls will actually specify the rebar placed closer to the living space side of the wall. Imagine the fill trying to bow the wall like a banana because the footer is holding the bottom of the wall in place while floor of the house is holding the top in place. The fill side of the wall is being compressed and open side is being stretched. Hopefully that will help others as much as it did me. Take care, Travis Creswell Ozark Energy Services -----Original Message----- From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Kent Osterberg Sent: Saturday, March 13, 2010 9:31 AM To: RE-wrenches Subject: Re: [RE-wrenches] rebar v/s fiber The need for rebar or not depends on how the pole is secured and on the shape of the footing. If you are installing a pipe in a deep narrow hole per most mount manufacturer's specifications, no rebar should be necessary. Anything else will certainly require rebar and per manufacturers' disclaimers should be designed by an engineer. For example, if the installation will have j-bolts in the concrete with the post welded to a plate held in place by the j-bolts, a full rebar cage will needed. _______________________________________________ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org _______________________________________________ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
