And you will need to become familiar with the term "overturning momemt". (arm * distance = moment) ----- Original Message ----- From: "Brian Rohrbacher" <[EMAIL PROTECTED]> To: "WISPA General List" <[email protected]> Sent: Saturday, November 08, 2008 10:28 AM Subject: Re: [WISPA] Stand offs for a water tower question...
> Do a little reading on rare earth magnets (the strongest magnet there > is). You might be able to do some calculations and figure out what you > would to build your own. > Here are a couple sites I just googled. I think all you need to do is > figure out how much pull force you need to offset the wind load. > > http://www.kjmagnetics.com/neomaginfo.asp > http://www.indigo.com/magnets/rare-earth-magnets.html > > Brian > > St. Louis Broadband wrote: >> I have two water towers that will need 4 to 5 antenna mounts. The water >> towers are both the same. They are approximately 120' with a climbing >> tube >> and a bulb at the top. There are no side rails. The hatch opens to the >> bulb. >> How do you attach antennas??? Is welding standoffs the best practice? >> Any >> ideas on basic costs? >> >> Here is a pic of one of the towers: http://stlbroadband.com/h20.html >> >> Also this was a method mentioned on another thread: >> http://www.metal-cable.com/page13.html >> These guys are nice but $3k apiece. I am thinking that if you went that >> route that you could get three for each tower and ad a mounting pipe >> between >> each creating a triangle and mount to that. I am not sure how long they >> would maintain their power for this application, but if you had to move >> your >> network these come along versus a welded situation. >> >> Thanks, >> Victoria >> >> >> -------------------------------------------------------------------------------- >> WISPA Wants You! Join today! >> http://signup.wispa.org/ >> -------------------------------------------------------------------------------- >> >> WISPA Wireless List: [email protected] >> >> Subscribe/Unsubscribe: >> http://lists.wispa.org/mailman/listinfo/wireless >> >> Archives: http://lists.wispa.org/pipermail/wireless/ >> >> > > > -------------------------------------------------------------------------------- > WISPA Wants You! Join today! > http://signup.wispa.org/ > -------------------------------------------------------------------------------- > > WISPA Wireless List: [email protected] > > Subscribe/Unsubscribe: > http://lists.wispa.org/mailman/listinfo/wireless > > Archives: http://lists.wispa.org/pipermail/wireless/ > -------------------------------------------------------------------------------- WISPA Wants You! Join today! http://signup.wispa.org/ -------------------------------------------------------------------------------- WISPA Wireless List: [email protected] Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
