1 edit | reply to viperm
Re: 10' to 15' mast guyed to NPRM sled ? I realize the angle of the guy wires wouldn't be the best angle for guying, but I thought if the cinder blocks on the sled were heavy enough to keep the mast & CPE from tipping over, and 4 guy wires were used, that it might be able to support a light CPE at 15 feet?
The CPE might be 4 or 5 pounds, and maybe 14 inches square. So that shouldn't put too much wind load on it.
You think it might work? |
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LLigetfa
join:2006-05-15
Fort Frances, ON
kudos:1 | An NPRM can hold a 10 foot mast without guys but personally, I would not use 1 1/4" TV mast. I would use heavier 2 1/2" pipe. If you intend to use that spaghetti crap then yes, I would guy it out. If going 15 feet, I would use maxi-blocks or smaller blocks and 4 bags of sacrete. |
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| said by LLigetfa: If you intend to use that spaghetti crap then yes, I would guy it out. If going 15 feet, I would use maxi-blocks or smaller blocks and 4 bags of sacrete. When you say "guy it out", do you mean, not to guy it to the 4 corners of the sled, but out further away from the sled, by having the guy wires go to the maxi-blocks, which are sitting on the roof? And a bag of sand would be on each of the maxi-blocks? So the 4 corners of the sled are just too close to guy to?
Only reason I asked, was I see a competitor is guying about a 15 foot pipe to the four corners of a sled, near by where I live. It seems pretty stable, even in wind. I can't see how many cinder blocks he is using, but it must be enough to keep the thing upright in a wind.
I thought if a 3 or 4 foot square base might be wide enough to hold a fairly light CPE at around 15 feet. That kind of setup could come in useful in the future for me. |
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LLigetfa
join:2006-05-15
Fort Frances, ON
kudos:1 | If you use the Wade NPRM I spec'd for you, it has a 4' X 4' base that takes 12 maxi-blocks. It has a mast clamp height of 51" so it can accept a 2 1/2" mast 10 feet long without guys. What I meant was that if you wanted to use that thin-walled spaghetti mast, you would need to guy it to the 4 corners of the sled.
The picture you show is nothing like the Wade NPRM. |
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1 edit | Do you think the Wade NPRM can go to 15 feet, if I guy it to the four corners, and if I use a 2 1/2" mast?
Or, if a 15 foot, 2 1/2" mast is sturdy enough, maybe I won't have to guy that either?
I wonder if they make 2 1/2" masts up to 15 feet? |
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LLigetfa
join:2006-05-15
Fort Frances, ON
kudos:1 | 15 feet might be pushing it a bit, depending on region. Is the area prone to very high winds? I don't recall how much those maxi blocks weigh. We used to hoist them up scaffolding with one hand so they can't be all that heavy. I'm talking about concrete blocks, not cinder blocks, 12" X 8" X 16" nominal. You may want to put a bag of sacrete on each corner. You can use galvanized posts made for chainlink fences. Ever do time?  |
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