[Towertalk] 25GSSB New? Baseplate

[Jim White]

mimic the base by getting a piece of plywood the same size...

sit the base atop the plywood...

drill through where the bolt holes are...

AFFIX THE ANCHOR BOLTS TO THE PLYWOOD...

Support the plywood at the correct for your pour....

Pour your concrete...

Remove the plywood...

Voila, the bolts are the right place!

K4OJ

Mike Rhodes wrote:

>   Just got back from our local Rohn distributor with my replacement 25G
> tower and accessories. I had mistakenly ordered a pier pin base and while
> trying to get that straightened out was made aware of the 25GSSB
> Self-Supporting Base. This thing is massive. The distributor said it is a
> new item and neither the nice lady in the office or Rita at R&L (who I
> purchased the tower thru) could find the pricing info for it. Turns out it
> is in a recent supplement. Anyhow, this base is made of about 1/2 inch thick
> steel plate and does not have the hinge mechanism (which I did not need or
> want anyway). The SSB is about $30 or so less expensive than the hinged base
> so I jumped on it. I still took the 1/2 x 12 bolts for mounting and they
> gave me some heavy gage 9/16 washers to use but the plate will take up to
> 5/8" bolts (hole dia = 11/16). Still thinking about going to the heavier
> bolts though. I guess that in reality the primary function of the baseplate
> is to keep the base of the tower on the concrete pad and support the tower.
> Sooo, if everything else is ok the diameter of the bolts should be
> relatively (within reason) insignificant. The alignment will certainly have
> to be right on with only 1/16 clearance. The drawing on the Rohn website
> does not show the size of the holes in the hinged base. Any comments?
>   I checked the Rohn web site for info and there is a drawing posted there.
> Funny thing is, the date is 1999. Wonder if it took this long to get it into
> production or if it is just new to this area of the country.
>   Also, I had ordered 3/16 guy wire, big grips, and 1/4 inch thimbles. Turns
> out the Rohn book recommends 5/16 or 3/8 thimbles for use with big grips.
> Changed those out while I was there too.
>   FWIW, YMMV, etc.
> 
> 73 de
> Mike / W8DN
> 
> 
> _______________________________________________
> Self Supporting Towers, Wireless Weather Stations, see web site: http://www.mscomputer.com
> Call 888-333-9041 to place your order, mention you saw this ad and take an additional 5 percent off
> any weather station price.
> _______________________________________________
> Towertalk mailing list
> Towertalk@contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
> 
> 
>