I'm wondering if concrete would be a better "pavement" material than asphalt for this application.
There are fiber reinforced "topping mixes" that may have the strength to hold up in a thin layer over the top of the hardware cloth. Some of these mixes are intended to be put down with no bond to the substrate (i.e, they can be used over a wooden floor with no bond to the wood). If you want to get exotic, there are self leveling mixes from a company called MAXXON that may be soupy enough to accommodate the hardware cloth. Problems with the concrete solution (that I can think of) would be the alkalinity of the concrete. You would have to ensure that the alkaline and caustic nature of the concrete wouldn't rot your hardware cloth. I'm also wondering why you wouldn't bury the hardware cloth in with the gravel. For instance, if you were planning on 6" of gravel, maybe put down 3" of gravel, power tamp the gravel, then put down an inch of sand, power tamp the sand, , then hardware cloth, then another inch of sand, power tamp the sand. Then put down the rest of your gravel and asphalt or concrete. I'm not up on site attenuation tricks; but would putting the hardware cloth in the sub-surface, as I suggested above be an issue? Maybe some of the other guys have an electrical reason why you wouldn't do that. Mechanically, it seems like it would work out just fine, the gravel would do just fine with the hardware cloth "discontinuity" in it. P.S. The only reason that I mentioned the layers of sand was to try to protect the hardware cloth from getting perforated by the gravel when it gets tamped. Especially if the gravel has some large, sharp stones in it You might be able to get the same effect by covering the hardware cloth with landscaping cloth before covering with gravel and tamping. Otherwise, I would intuitively agree with Ed's asphalt contractor in thinking that hardware cloth between the layers of asphalt would make a weak top layer of asphalt susceptible to crumbling. Chris Maxwell Design Engineer, XFB FGC (eX Farm-Boy, Frustrated General Contractor) Nettest From: owner-emc-p...@listserv.ieee.org [mailto:owner-emc-p...@listserv.ieee.org] On Behalf Of Cortland Richmond Sent: Tuesday, March 15, 2005 2:06 PM To: ieee pstc list Subject: Re: OATS Ground Plane Material khar...@lexmark.com asked >> Has anyone attempted to imbed an OATS ground screen in asphalt? A new parking lot is going in near our lab and I have a chance to install an OATS. The stack-up will be gravel with 3" base asphalt and a 1" asphalt ...<< Keith, At one place I worked, we installed a galvanized hardware-cloth ground plane over asphalt, and covered it with a liquid acrylic. However, when the hardware cloth strips were soldered together the ground plane bowed and rippled, so that instead of requiring one application of acrylic, it needed five. This did not prevent us from meeting the site attenuation requirements. Cortland Richmond This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.org Instructions: http://listserv.ieee.org/listserv/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.org Instructions: http://listserv.ieee.org/listserv/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
