[TowerTalk] US Tower Weight / Wind Load Load Limits

[Steve Jones]

Tony,
When I put up my UST HDX-589 I spoke with Remigio Fernandez, their
structural engineer.  I put a SteppIR DB42 on top at 90 feet.  About 20+ sq
feet of wind load.  Remigio said if the weather forecast is for 50 mph or
higher gusts, lower the tower!  Otherwise it will be OK.  I have done this
for about 13 years and it hasn't failed yet.
Happy New Year es 73,
Steve
N6SJ

-----Original Message-----
From: TowerTalk <towertalk-bounces at contesting.com> On Behalf Of Tony
Sent: Monday, January 5, 2026 3:11 PM
To: TowerTalk at contesting.com
Subject: [TowerTalk] US Tower Weight / Wind Load Load Limits

All:

I plan on replacing my HF antenna with an Optibeam model 16-3 Yagi. It's an
interlaced 4/4/8 element Yagi that covers 20/15/10 meters. The antenna
weighs 130lbs with a 33 foot boom with a wind rating of 12.7 sq. ft at 75
mph.

I also plan on adding an additional 6M and 2 meter Yagi's above the HF Yagi
on an 18-foot mast. The specs for the 6M / 2M antennas are 30lbs 30ft boom
and 16lbs 21 ft boom. Windload is 5 and 2 sq.ft. at 75mph.

The total weight in antennas comes to 176lbs with an estimated wind load of
18 sq.ft.

My tower is the HD555 heavy-duty model made by U.S. Tower. It has an antenna
weight limit of 200 lbs and a wind rating of 23.4 sq.ft at 75mph. The
rotator is the Yaesu 2800.

This setup "should" be within the towers rated limits, but I wanted to run
the numbers by the group since there's a lot of experienced folks on this
reflector.

Thanks, Tony -K2MO


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