> ---------- Original Message ----------
> From: Mike K7PI <bipi@comcast.net>
> To: wwdxc@groups.io
> Date: 11/03/2020 8:25 AM
> Subject: [wwdxc] Antenna Permit Query
>
>
>
> Hello All,
>
>
> The vice chair of our local emergency communications group here on Mercer
> Island is Pat Hackett, K7PTH. Pat works closely with our city police, fire,
> and local government to ensure we have trained radio operators and procedures
> that will effectively provide crucial communications in the event of a major
> disaster. While our local communications are VHF/UHF we also depend on HF
> for off-island and inter-state communications.
>
>
> Pat has recently upgraded to a General Class license and John Banbury
> (AG7N) and myself have been helping her plan a low profile but effective HF
> antenna installation. She has chosen a US Towers ALM31 crank up mast with a 2
> element STEPPIR 6-40m yagi. The maximum height of the mast is 31 feet and
> lowered it is less than 8 feet. The mast with payload is rated at 65 MPH
> steady wind speed with an 85 MPH 3-second gust. Payload is rated at 8 sq-ft
> and 50 lbs weight. The 2 ele STEPPIR she plans on using has a wind load
> rating of 6 sq-ft and weighs in less than 50 lbs including the chosen rotator.
>
>
> Pat applied for a Mercer Island building permit to erect the mast
> providing all of the design calculations for the mast installations. The city
> has come back stating that the mast is an "auxiliary structure" and as such
> must have maximum height restriction of 17 feet and design wind speed of 110
> MPH. After supplying the city with a copy of PRB-1 they have relaxed the
> height requirement but still require the 110 MPH design wind speed. The
> lowered mast will be installed on the North side of Pat's house and will be
> completely blocked from our SW storm wind direction. Furthermore, if the mast
> were to fail for any reason, it would land well within the footprint of her
> property boundaries. All utilities are buried so that also is no issue.
>
>
> So, we are in the process of gathering information to help push this
> permit through the city's zoning department. It appears that the city would
> like to approve the permit but they need some way of justifying relaxing the
> requirements for the category classification of the mast. To that end, Pat is
> in the process of reaching out to several lawyers with related
> tower/antenna/zoning experience. In addition, I am reaching out to our WWDXC
> members who have either obtained a permit or found that no permit was
> required for their tower installation and to briefly supply the following
> information:
>
>
> 1. Your callsign.
>
> 2. Your local zoning jurisdiction.
>
> 3. Permit required?
>
> 4. A brief description of your installation, i.e., height, antennas
>
> 5. How the tower/antenna was characterized, i.e., structure, antenna,
> other?
>
> 6. Design wind speed requirement.
>
> 7. Any relaxation of requirements due to site specific considerations.
>
> 8. Any links to local zoning requirements related to antenna permitting
> (if possible).
>
> 9. Any other helpful comments you might have.
>
>
> Thank you for reading this lengthy email and we appreciate any
> information received.
>
>
> 73 de Mike
>
> K7PI
>
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