I assume he means Non Penetrating Roof Mount. Most acronyms mean multiple things.
From: AF <af-boun...@af.afmug.com> On Behalf Of Chuck McCown Sent: Tuesday, October 20, 2020 7:56 PM To: AnimalFarm Microwave Users Group <af@af.afmug.com> Subject: Re: [AFMUG] my adulterated nprm NPRM notice of proposed rule making Sent from my iPhone On Oct 20, 2020, at 6:08 PM, Steve Jones <thatoneguyst...@gmail.com <mailto:thatoneguyst...@gmail.com> > wrote: Pretty solid in the shop with the angle supports, but if it feels loose up top we will do that too, probably will anyway to hang pipe On Tue, Oct 20, 2020, 6:14 PM Jaime Solorza <losguyswirel...@gmail.com <mailto:losguyswirel...@gmail.com> > wrote: I would build a cross support system from tower section to tower section...make it sturdier On Tue, Oct 20, 2020, 2:18 PM Steve Jones <thatoneguyst...@gmail.com <mailto:thatoneguyst...@gmail.com> > wrote: <nprm.jpg> so it exists now On Sat, Oct 3, 2020 at 8:41 PM Steve Jones <thatoneguyst...@gmail.com> wrote: Yeah, its 40lbs per square foot and landlord said it's no issue. It's a concrete silo On Sat, Oct 3, 2020, 6:27 PM Ken Hohhof <af...@kwisp.com <mailto:af...@kwisp.com> > wrote: I assume you’ve determined the roof can support 3100 lbs in something like 100 sq ft. Sounds like a lot, but I guess it’s no worse than 15 big guys standing together. From: AF <af-boun...@af.afmug.com <mailto:af-boun...@af.afmug.com> > On Behalf Of ch...@wbmfg.com <mailto:ch...@wbmfg.com> Sent: Saturday, October 3, 2020 5:49 PM To: AnimalFarm Microwave Users Group <af@af.afmug.com <mailto:af@af.afmug.com> > Subject: Re: [AFMUG] my adulterated nprm pipe hangers and unistrut From: Steve Jones Sent: Saturday, October 3, 2020 4:30 PM To: AnimalFarm Microwave Users Group Subject: Re: [AFMUG] my adulterated nprm i still need to figure out a clean attachment for the struts, there will be a gap between the tower sections and the angle iron, it comes at 45 degrees as well, so I dont think heavy u bolts will sit right without crimping. The sections are on the rohn footplates welded to the base. On Sat, Oct 3, 2020 at 5:02 PM Steve Jones <thatoneguyst...@gmail.com <mailto:thatoneguyst...@gmail.com> > wrote: that nprm6 was pushing its luck, they had only put 480lbs of the ballast (I had calculated at something like 850), it didnt move, the grain leg got knocked over, the other providers 3 foot pipe tuned and bent. I was surprised about the lock, i think since the antenna was only centerline height of 5.5 feet and I cut the remaining pipe off I slipped in just under, and the wind may have not straightligned across the top of the bin. It should have been on the ground with the grain leg. On Sat, Oct 3, 2020 at 4:34 PM <ch...@wbmfg.com <mailto:ch...@wbmfg.com> > wrote: At 100 mph you will see about 35 PSF with your antenna roughly 250 lbs of force if facing the wind. Looks like you will have an 8’ vertical lever and a roughly 4 foot or less horizontal lever, so a 2:1 advantage. That will will lift 500 lbs of ballast on the base due to the dish. More depending on all the other junk. You are probably going to be OK. You would need a structural engineer to look it over to know for certain. Hams used to say, if the storm did not take down their antenna, it was not tall enough... From: Steve Jones Sent: Saturday, October 3, 2020 3:19 PM To: AnimalFarm Microwave Users Group Subject: [AFMUG] my adulterated nprm so We have a new site, we cannot mount anything to structure. this is what im putting up there, its a modified nprm6 with 3 sets of 25g. our leased space has a ton of obstructions to clear. my only concern is if the 25g will be sufficient for a 3' antenna at 8 feet (3 feet above the brackets) we have 3100lbs ballast up there and another 900 if we need it. We will have potentially 2 pmp 4 radio clusters, we will add 5 foot to the 25g for that. this is 100 feet in the air and made from 1 1/2' angle iron roast me _____ -- AF mailing list AF@af.afmug.com <mailto:AF@af.afmug.com> http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- AF mailing list AF@af.afmug.com <mailto:AF@af.afmug.com> http://af.afmug.com/mailman/listinfo/af_af.afmug.com _____ -- AF mailing list AF@af.afmug.com <mailto:AF@af.afmug.com> http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- AF mailing list AF@af.afmug.com <mailto:AF@af.afmug.com> http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- AF mailing list AF@af.afmug.com <mailto:AF@af.afmug.com> http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- AF mailing list AF@af.afmug.com <mailto:AF@af.afmug.com> http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- AF mailing list AF@af.afmug.com <mailto:AF@af.afmug.com> http://af.afmug.com/mailman/listinfo/af_af.afmug.com
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