Hurricanes! I would feel more comfortable with
some torque bars and guy wires on the tower,
guying at a minimum of 60-degrees.
Charlie
On Mon, 16 Jul 2012 20:10:42 -0400 "k2vi" <k2vi@cox.net> writes:
> I read you. Fender washers on both sides of the 2x6 so the all thread
> does
> not pull the brick into the studs. I will also use lock washers and
> not
> overtighten. This will have to be near the ceiling of the room.
> There is a
> pitch just above the fasher board outside.My other option is a roof
> tower. I
> know how to do it because i had one up at my qth. Im looking to put
> up a
> hy-gain 203-BA. A 3 element 20 meter mono band antenna. It weighs 32
> pounds
> with a 16' x 2"OD boom. Wind load is 5.3. A roof tower would be the
> least
> costly option. The roof is 32' at the top and is very pitched. It's
> not a
> truss but seems to be a gable roof frame. We rarely see hurricanes
> but when
> we do the gust could reach 75mph for a second or so. what do you
> think
> charlie? good idea? Hope to hear you on the bands soon.
>
> tony k2vi
> ----- Original Message -----
> From: "Missouri Guy" <n0tt1@juno.com>
> To: <k2vi@cox.net>; <TowerTalk@contesting.com>
> Sent: Monday, July 16, 2012 7:33 PM
> Subject: Re: [TowerTalk] help with rohn 25g bracket mount
>
>
> >
> > On Mon, 16 Jul 2012 15:13:33 -0400 "k2vi" <k2vi@cox.net> writes:
> >> Im going to errect a 38' rohn tower next to my house. The house
> is
> >> brick exterior. Should i drill straight through the brick into
> the
> >> attic then put a 2x6 across or just used 6 anchors made for
> brick
> >> that expand and just lock em in with 3/8 all thread.
> >
> > Hi Tony,
> >
> > It would be best to go thru to your attic. Spread
> > the load with the 2x6 fastened over several studs...I think
> > you were going to do that. More....
> >
> > The brick, probably just a "brick veneer" (like
> > on my house) is secured with "brick ties" that are nailed through
> to
> > the wall studs, then grouted into the various courses as they
> > are layed. So, personally, I wouldn't trust the brick to
> > lend any substantial support. When you do go through to your
> > attic, keep in mind that there would normally be an air space
> between
> > the back of the brick and the sheathing. So, you would
> > NOT want to over-tightnen the bolts. You should consider
> > placing washers and nuts on the BACK of the 2x6, so there's
> > no load on the brick, brick ties, etc when the nuts on the
> > FRONT are tightened. Finish the connection with washers
> > and nuts on the front of the 2x6. Doing that will place
> > all the load on just the wall studs, both inward and outward
> > stress. Again, use a long 2x6 spanning over several wall
> > studs for the "ultimate" support.
> >
> > Just my "barbershop" advice. :D)
> >
> > 73,
> > Charlie, N0TT
>
>
>
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