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Author Topic: Tri-ex W51 Engineering Drawings  (Read 288 times)

N6YJ

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Tri-ex W51 Engineering Drawings
« on: August 14, 2022, 02:05:47 PM »

Does anyone have engineering drawings for the Tri-Ex W51 and base that I can get a copy of?   After 40 years of  having my tower in, the city is forcing me to get a building permit for having installed the tower.  They require stamped and signed structural drawings.  Unfortunately the ARRL lists of volunteer attorneys and volunteer certified engineers are way out of date and a useless possible resource.

Thank you

Kim  N6YJ
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WA3SKN

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Re: Tri-ex W51 Engineering Drawings
« Reply #1 on: August 14, 2022, 02:56:42 PM »



Tashjian Towers Corporation

2765 S. Temperance Ave.
Fowler, CA 93625

Phone: 559-834-4300

Fax: 559-834-4377
-----------------
Tashjian Towers Corporation bought out Tri Ex, they probably have everything you need.

-Mike.



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N6YJ

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Re: Tri-ex W51 Engineering Drawings
« Reply #2 on: August 14, 2022, 04:59:54 PM »

Mike:  I contacted Tashjian and was told all they could do is have me pay them to generate engineering drawings specific to my location and installation.  All I need is copies of the certified build plans for the tower and base.

Kim  N6YJ
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WB8PFZ

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Re: Tri-ex W51 Engineering Drawings
« Reply #3 on: August 15, 2022, 05:34:10 AM »

Since they can't see whats below grade how are they going to know if it is correct? Just curious. Mike
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KJ6YI

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Re: Tri-ex W51 Engineering Drawings
« Reply #4 on: August 15, 2022, 07:16:36 AM »

Hi Kim,

I have the instruction manual for the LM354E tower, which is similar to the W51. This manual has all the drawings for the tower concrete footing as well as other information. If you send me your email information, I'll get you the manual.

Dennis, KJ6YI

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W1MOW

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Re: Tri-ex W51 Engineering Drawings
« Reply #5 on: August 15, 2022, 10:14:59 AM »

Does anyone have engineering drawings for the Tri-Ex W51 and base that I can get a copy of?   After 40 years of  having my tower in, the city is forcing me to get a building permit for having installed the tower.  They require stamped and signed structural drawings.  Unfortunately the ARRL lists of volunteer attorneys and volunteer certified engineers are way out of date and a useless possible resource.

Thank you

Kim  N6YJ

Sounds like you never got a building permit when you installed the tower, and now they require stamped and signed drawings. It also sounds like a neighbor found out you never got a permit and does not like your tower.

Sadly it may require more than just a generic set of drawings, you may need a soil study. Get from your building department exactly what is required. Whatever you do, do not challege them, say "Yes Sir/No sir" and do whatever they require, if you want to keep your tower. They can and will make you take down your tower if you upset them.

I am not licensed in the State of California, there is not much I can help you with.

Gary P.E. W1MOW
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The fundamental cause of the trouble is that in the modern world the stupid are cocksure while the intelligent are full of doubt - Bertram Russell (1935)

So not much has changed in almost 90 years!

K6JH

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Re: Tri-ex W51 Engineering Drawings
« Reply #6 on: August 16, 2022, 04:13:45 PM »

This sounds like a “catch 22”. Since you installed 40 years ago without wet-stamped drawings, you can’t magically generate them for Tasjian  to generate a new set.

I kind of disagree about making noise with the building department if there is no alternative. And removal, demo of the base and reinstallation per modern wet-stamped plans and new permit doesn’t seem practical, even if Tasjian will do new plans. What were the requirements 40 years ago when the tower was installed? Seems to me if there weren’t any specific requirements at the time then the tower complies and should be grandfathered in. YMMV and all that. I’m not a P.E.
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Jim K6JH

K6JH

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Re: Tri-ex W51 Engineering Drawings
« Reply #7 on: August 16, 2022, 05:02:38 PM »

Note that 40 years ago no permit was required in LosAngeles, where my Dad had a smaller Tri-ex tower. Maybe Hercules is similar? Of course then you have to prove the installation predates the new regulations.

Of course you can always go ride your motorcycle.  ;D

Jim
2004 ST1300
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Jim K6JH

K5LXP

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Re: Tri-ex W51 Engineering Drawings
« Reply #8 on: August 17, 2022, 05:51:03 PM »

After 40 years of  having my tower in, the city is forcing me to get a building permit for having installed the tower.

Did this installation require a permit back then?  Are you the original owner?  I'm trying to picture a scenario where this installation isn't grandfathered.  You can't retroactively enforce current building code or ordinances, otherwise all our homes would be red tagged for noncompliance after about 5 years.  I would work it from this angle, letting them sue me and produce evidence for noncompliance from 40 years ago. 

I have a Tri-Ex 54' tower, installed around 1996.  On the drawings though it's labeled a LM-354-HD, and they're dated 1977.  Not sure any drawings I have could be considered valid for the W51.

Mark K5LXP
Albuquerque, NM
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KD6VXI

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Re: Tri-ex W51 Engineering Drawings
« Reply #9 on: September 06, 2022, 12:46:39 PM »

After 40 years of  having my tower in, the city is forcing me to get a building permit for having installed the tower.
You can't retroactively enforce current building code or ordinances, otherwise all our homes would be red tagged for noncompliance after about 5 years.


Yes you can.  If you do anything to the structure, it has to be brought to current code.

I had to bring plenty of home electric systems up to current code when installing solar.  To the point of ensuring that all dwelling spaces (bedrooms) had fire alarms, GFI in areas with concrete floors, etc.

However, you are correct if no new work is done on the premise.  But as a blanket statement, that is incorrect.

--Shane
WP2ASS / ex KD6VXI
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