[TowerTalk] Fwd: [wwdxc] Antenna Permit Query

[jcowens1 at comcast.net]

>     ---------- Original Message ----------
>     From: Mike K7PI <bipi at comcast.net>
>     To: wwdxc at 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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