Hi Art,
Having built a few houses I am concern about "just" attaching a tower to the
house especially to the eave. You could have some steel ribbons attached to
the roof rafters inside the house to create a relative strong
point-of-attachment for the tower. Using a chimney is out as you should only
consider that
as a pile of bricks with an improved friction between each brick from the
mortar.
The "usual" wind load calculation would give you how much load you need to
anchor in the house. Remember that the house itself will be exposed to wind the
same time as the tower.
Hans, N2JFS
____________________________________
From: atrampler@att.net
To: towertalk@contesting.com
Sent: 9/4/2008 2:06:46 P.M. Eastern Daylight Time
Subj: [TowerTalk] 25G/House bracket
Hi All,
A friend and I are helping a YL HF operator reactivate after several years
QRT. Now a gentleman never shares a woman's age, but let's just say she could
have voted for Truman, and maybe for FDR. So yes, she needs a little help.
I've uploaded her yard-map to my company's website if you will take a look:
www.ccoinc.com/Yardmap.pdf
She is wanting the tower up against the house, rather than having us move
her vertical. She has five sections of 25G, will have one section sunk in
concrete for the base, and will be putting up a Cushcraft ATB-34 yagi on it.
Putting it against the house raises some issues as to guying the tower, but
what would be the safe height for this, unguyed, if we were to house or
eave-bracekt the antenna?
She is southeast of Oklahoma City, so yes there will be winds from time to
time.
Your thoughts are appreciated. I've assisted putting up several towers but
this will be my first time "in the lead," so advice is welcomed. If any of
you are in the OKC area and would like to help with this, most likely some day
in October, please let me know.
73,
Art, KØRO
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