Tailgating Flagpole Stand

[zapster]

Well with football season under way next week my brother wanted a stand for his HUGE N.E.Patriots flag..

he has season tix..
(i watch on tv)

wanted to make sure that it wont tip over..so heres what i came up with..
(its probably been done b-4)

the "tire marks" is where you park on top of it..its not moving..
and the pole diameter is 3.5 inches..

rahh rahh sisss boom bahhh

whatever..









...zap!

[Weekend Mig]

That's a pretty cool idea. But I've heard about your crazy NFL football tailgate parties and I think that huge flag would just be a warning beacon for me to STAY AWAY!!!!

Seriously though looks great and I'm sure it will be super functional.

[zapster]

thanks..
i could not believe he has a flag that big and a telescoping aluminum flagpole with a "just under" 3.5" base...must be 60' when its extended..
i've never been to a football game..
i see no reason to eat everything and everything and drink the same starting @ 8 A.M.

and get home @10 P.M.

...zap!

[justweldit41]

Looks cool and a fine job now where the home built BBQ grill for the tailgate to go along with it.
justweldit41

[zapster]

Originally Posted by justweldit41

Looks cool and a fine job now where the home built BBQ grill for the tailgate to go along with it.
justweldit41

not my department...

...zap!

[justweldit41]

ps what was that next to it looks like some sort of sewing machine, i don't think i have one of those in my shop, your not moonlighting and not letting us in are you.

justweldit41

[zapster]

the "sewing machine" is mrs zaps glass cutting band saw...

nice try though...

...zap!

[elderthewelder]

GO SEAHAWKS!!!!!!!!!!!!!!!

[awright]

Hmmm. Is this a common design at tailgate parties? Are you confident that the base is wide enough? Did you really mean a 60 ft. flagpole? I've tried to erect 30 ft masts for my noise monitors and it's not at all easy to get a few pounds up 30 feet, much less 60 feet. Of course, I've only tried to do it alone, not with a crew of well-fueled buddies.

Running out some numbers using very rough guesses:

With what looks like a 5" wide baseplate and with 1/4 of the weight of a 4000 lb car on the plate, and assuming that all the vehicle weight will be on the high edge of the plate (not true, because tire pressure is distributed over the whole tire patch), the moment that the plate could resist before lift-up is about 5000 inch-pounds.

The lateral force at the top of a 60 ft flagpole that would produce this moment is 5000/(60 x 12) = 7 pounds force. That doesn't take into consideration any distributed wind force on the pole itself.

How big is your flag and how windy is your parking lot? Do you use guy lines? Are you insured?

I'd feel safer with some outriggers or guy lines fore and aft.

Really nice welding job.

awright

[rookiemower]

wow! it's just for a measly tailgating flag. I dont think it will be supporting the stadium. nice welding zapster

[zapster]

Originally Posted by awright

Hmmm. Is this a common design at tailgate parties? Are you confident that the base is wide enough? Did you really mean a 60 ft. flagpole? I've tried to erect 30 ft masts for my noise monitors and it's not at all easy to get a few pounds up 30 feet, much less 60 feet. Of course, I've only tried to do it alone, not with a crew of well-fueled buddies.

Running out some numbers using very rough guesses:

With what looks like a 5" wide baseplate and with 1/4 of the weight of a 4000 lb car on the plate, and assuming that all the vehicle weight will be on the high edge of the plate (not true, because tire pressure is distributed over the whole tire patch), the moment that the plate could resist before lift-up is about 5000 inch-pounds.

The lateral force at the top of a 60 ft flagpole that would produce this moment is 5000/(60 x 12) = 7 pounds force. That doesn't take into consideration any distributed wind force on the pole itself.

How big is your flag and how windy is your parking lot? Do you use guy lines? Are you insured?

I'd feel safer with some outriggers or guy lines fore and aft.

Really nice welding job.

awright

correction its 40 feet..but what the hay...
i took all that into consideration...
unless a hurricane blows into town it aint going anywhere..
and a F-350 duallie will be on top..

me no worried
but nice math class..with all the figuring and everything...

...zap!

[awright]

A 3.5" diameter 60 correction, 40 foot pole for a, "...measly tailgating flag"?

I guess I was fooled by the, "... a stand for his HUGE N.E.Patriots flag," description.

awright

[fun4now.]

just make him one to stick in the trailor hitch and the hole truck will have to fly away with the flag LOL
he can call you on the phone to help him find his truck.....after the game of corse.