Residential Flagpole Specification Sheet

Residential Flagpole · Specification Sheet

The Greyline Residential Flagpole

Prepared for architectural review committees. A permanent, in-ground residential flagpole in aircraft-grade aluminum, engineered to the ASCE 7-10 wind standard.

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Construction

Material	6061-T6 aircraft-grade aluminum, 2-inch outer diameter; the heavy-duty models stand on an oversized heavy-duty base
Hardware	Stainless steel throughout; 316 marine grade available for coastal homes
Finish	Natural aluminum; powder-coat colors available
Heights	12, 16, 20, 24 and 28 feet, plus the heavy-duty 20-, 24- and 28-foot models for high-wind locations
Guy wires	None
Optional	Tilt-up base, so the pole can be lowered for maintenance or ahead of a storm

Wind Ratings, ASCE 7-10

Height	Flag Flying	Flag Lowered (or No Flag)
12 ft	100 mph	155 mph
16 ft	75 mph	115 mph
20 ft	60 mph	90 mph
24 ft	50 mph	70 mph
28 ft	35 mph	55 mph
20 ft heavy-duty*	to follow	about 124 mph
24 ft heavy-duty*	to follow	about 107 mph
28 ft heavy-duty*	about 80 mph	over 90 mph

The flag is the largest wind load, so the rating is lower while it flies. The U.S. Flag Code calls for lowering the flag in severe weather. *Heavy-duty figures are preliminary engineering estimates; certified ratings to follow.

For high-wind locations: the heavy-duty models carry far higher wind ratings than the standard poles of the same height. The 20-foot heavy-duty reaches about 124 mph with the flag lowered, and the 28-foot heavy-duty carries more than double the standard 28-foot rating with the flag flying, and nearly double with it lowered.

Installation Footprint

One in-ground sleeve at the base, set about 3 feet deep in a hole roughly 12 to 18 inches across, on gravel and in concrete; the heavy-duty models set in a larger concrete foundation. No guy wires, no anchors and nothing spread across the lawn. Landscaping beyond the base is undisturbed.

Questions from the Committee

Board members are welcome to call us directly at 435-200-4902 (Sun Valley, Idaho, Mountain Time).

Greyline Performance · Sun Valley, Idaho · greylineperformance.com

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Essential for every antenna

This turns all antenna work into easy one-man jobs. It also makes storm prep easy - just drop the antenna for the storm, raise it later. It takes less than 5 minutes to go up or down. I can't imagine having an antenna without one. I'm old enough that climbing towers, trees or big ladders just isn't in the playbook any longer, so this is a life-saver for my hobby. Buy one and make your life easier and add years to your ability to work on your antenna. Five Stars!!

Thank you, Rob. “Essential” is exactly the word we hoped for. One tip from another owner: walk it down once a season on a calm day and check the hardware at chest height. Fun season ahead! 73, Jon KL2A

Should be part of every antenna

The tilt base makes it possible to raise and lower the antenna in minutes single-handed with complete safety. The design is simple and robust and I love the fact that it can't over-shoot when raising it. In fact, it is seriously over-built. The only help I needed to install it was lowering the antenna to add the unit. It does raise the halyard cleat but I simply removed it, left the bolts in the original holes and mounted it at a comfortable level with a stainless hose clamp, problem solved. No more worries about the antenna during storms here in Florida. Five minutes and it's on the ground out of the wind.

Great addition to My 20V!

After 2 weeks of use I can safely say that the 9' whip is a great addition to my 20V! My rough calculations show about a 2+ db improvement overall. On the receive side the most dramatic indicator is that I am getting approximately the same signal strength without the preamp on most bands. I am also getting more reports in the + range on FT8 than previously. I have used PSK reporter to get a general picture of my RF footprint and signal strength compared to to the original 20v w/ previous reports. I have also been able to work several new countries that I could not work previously...India, Franz Joseph Land, Kahazakistan. India is certainly not rare but it has taken me three years to eliminate my "blind spot". Swr is well below 1.3/1 on all bands 80m-6m using the LDG RT-100 at the antenna. All in all could not be more pleased with the 9" whip addition!

Franz Josef Land and Kazakhstan on nine more feet — that's the report every whip page wishes it had. Thank you, Craig. Your words are on the page now. 73, Jon KL2A

Better base.

I want a 6ft x 18in hole. That is what the backhoe bucket is going to dig. I will need my own base tube, and a whole lotta concrete! I bought this extender to allow a more accurate vertical alignment while dumping in the concrete.

A 6-foot hole will hold anything we build. One tip while the concrete goes in: check plumb from two directions, 90° apart, then leave it alone for 24 hours. Send us a photo when it’s up! 73, Jon KL2A

Product is good. But I need a quick instruction sheet. You remove the bottom tube and replace it with the antenna base. Then the tube you removed connects the the top of the arm and to the insulated base of the antenna. Now I can lower my 24’ antenna without help.

Thank you, Dale. You were right, so we made one: the one-page Tilt-Up Base Instructions (install, lower, raise) now sit on the product page, because of your review. Have the best season yet! 73, Jon KL2A